Posttraumatic Arthritis Is More Common in Patients Undergoing Total Knee Arthroplasty Before Age 50.

Primary total knee arthroplasty (TKA) in patients under 50 is becoming more common. The goal of this study was to identify the diagnoses and predisposing factors for TKA prior to age 50. The Military Data Repository was queried for patients undergoing TKA prior to age 50. The cohort was matched to older patients. A total of 1,504 patients underwent manual record review for demographics, prior knee surgery, and indication for TKA. Primary osteoarthritis was the most common indication in both cohorts. Posttraumatic osteoarthritis was more common in patients who underwent TKA before age 50 (28%) compared with patients 50 and older (7%; p < 0.001). Patients who underwent TKA before age 50 were more likely to have previous anterior cruciate ligament injury, or any previous ipsilateral knee surgery (p < 0.001). These data suggest an association between prior knee injury and age at time of TKA. (Journal of Surgical Orthopaedic Advances 33(2):072-076, 2024).

The Surgical Management of NCAA Division 1 College Football Injuries Post COVID-19: A Single Institution Retrospective Review.

ABSTRACT: Cohen, JL, Cade, WH, Harrah, TC, Costello II, JP, and Kaplan, LD. The surgical management of NCAA Division 1 college football injuries post COVID-19: A single institution retrospective review. J Strength Cond Res 38(5): 906-911, 2024-The unprecedented COVID-19 pandemic had a significant impact on college football operations, including athletes' training regimens. As a result of these changes, concern for increased injury susceptibility post COVID-19 regulations has become a point of discussion. The current study sought to evaluate the incidence of surgical injury among NCAA Division 1 college football players at the authors' institution during the first full season after start of the COVID-19 pandemic compared with previous years. Retrospective chart review was performed for all players who sustained injuries requiring surgery while a member of the NCAA Division 1 football program during the 2009-2021 seasons. A p -value of ≤0.05 was used to determine significance. A total of 23 surgical injuries occurred in 22 players during the 2021 season compared with 121 in 118 players in the 12 previous seasons combined ( p = 0.0178; RR = 1.47). There was a significant increase in shoulder injuries ( n = 13 vs. n = 31; p = <0.0001; RR = 3.05) and specifically a significant increase in labral tears ( n = 10 vs. n = 30; p = 0.0003; RR = 2.74). No difference was seen in knee injuries ( n = 10 vs. n = 77; p = 0.27; RR = 1.35) and specifically no difference in anterior cruciate ligament injuries ( n = 3 vs. n = 31; p = 0.77; RR = 1.17). This phenomenon is multifactorial in nature, but alterations to players' training and preparations because of the COVID-19 pandemic likely resulted in suboptimal conditioning, leading to the increased incidence of surgical injuries emphasizing the importance of adequate strength training and conditioning.

Prevalence and Predictors of Concomitant Meniscal and Ligamentous Injuries Associated With ACL Surgery: An Analysis of 20 Years of ACL Reconstruction at a Tertiary Care Children's Hospital.

BACKGROUND: There is an increasing rate of procedures being performed for concomitant injuries during anterior cruciate ligament (ACL) surgery. Few studies have examined risk factors for these associated injuries in young patients. HYPOTHESIS: There are patient-related factors predictive of concomitant knee pathology that differ between age-based cohorts. STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: Natural language processing was used to extract clinical variables from available notes of patients undergoing ACL surgery between 2000 and 2020 at a single institution (5174 ACL surgeries; mean age, 17 ± 4 years; 53.1% female; accuracy, >98%). Patients were stratified to pediatric (5-13 years), adolescent (14-19 years), and young adult (20-35 years) cohorts. Logistic regression was used to determine predictors of concomitant injury to the menisci, medial collateral ligament (MCL), posterolateral corner (PLC), and posterior cruciate ligament (PCL). RESULTS: Between 2000 and 2020, 54% of pediatric, 71% of adolescent, and 70% of adult patients had ≥1 concomitant soft tissue injury. In children and adolescents, increased age was consistently predictive of sustaining a concomitant injury (P < .02). Female children had increased odds of concomitant medial meniscal injury, while female adults had decreased odds (P≤ .046). Adolescent and adult female patients had decreased odds of concomitant lateral meniscal injury (P≤ .027). Female children had increased odds of injury to the MCL (P = .015), whereas female children and adolescents had decreased odds of PCL injury (P≤ .044). Adolescents undergoing revision ACL surgery had increased odds of meniscal injury (P≤ .001) and decreased odds of concomitant MCL injury (P = .028). Increased body mass index (BMI) was associated with increased odds of concomitant medial meniscal injury in all cohorts (P≤ .041), lateral meniscal injury in adults (P = .045), and PLC injury in children (P = .016). Contact injuries were associated with increased odds of MCL injury in adolescents (P = .017) and PLC injury in adolescents and adults (P < .014). CONCLUSION: These findings support the hypothesis, as there were multiple factors that significantly affected the risk of concomitant injuries that differed between cohorts. Increased age, BMI, and contact injury history were generally associated with increased odds of sustaining a concomitant injury, whereas female sex and revision ACL surgery had mixed effects. Further studies are essential to investigate the sex-based differences in risk for concomitant injuries and to develop tailored treatment plans that minimize the risk of secondary ACL injury.

Multiligament knee injuries. Ten years' experience at a public university, level I Trauma Center.

PURPOSE: To describe our institutional experience and results in the surgical management of multiligament knee injuries (MLKI). MATERIALS AND METHODS: Retrospective series of MLKI consecutively operated on at a single, level I Trauma Center. Data on patients' baseline characteristics, injuries, treatments, and outcomes were recorded up to one-year follow-up. Recorded outcomes included the Tegner-Lysholm Knee Scoring Scale (TLKSS), return to work, and patient satisfaction. RESULTS: MLKI incidence was 0.03% among 9897 orthopedic trauma admissions. Twenty-four patients of mean age 43.6 years were included in analysis. The mean Injury Severity Score was 12.6. Five patients presented with knee dislocations and six had fracture-dislocations, two of them open fractures. There was one popliteal artery injury requiring a bypass and four common peroneal nerve palsies. Staged ligamental reconstruction was performed in all cases. There were seven postoperative complications. The median TLKSS was 80 and, though patient satisfaction was high, and dissatisfaction was largely restricted to recreational activities (only 58.3% satisfied). Seventeen patients returned to their previous employment. CONCLUSIONS: We found a high aggregation of fracture-dislocations secondary to road traffic accidents. One in four patients experienced complications, particularly stiffness. Complications were more common in cases involving knee dislocation. Most patients had good functional results, but 25% were unable to return to their previous work, which demonstrates the long-lasting sequelae of this injury.

Pediatric Anterior Cruciate Ligament Reconstruction.

The incidence of anterior cruciate ligament (ACL) injuries in children and adolescents has been growing recently. This problem is a challenge for the treating orthopedic surgeon, especially when the patient is in the prepubertal period with a high growth potential. Since reconstructive procedures require interventions close to active growth plates, they are associated with the risk of postoperative limb length discrepancies and limb deformities. Postponing ACL reconstruction until the end of growth is not a solution, as persistent knee instability increases the risk of secondary intra-articular damage. The key to success is not only knowledge of the anatomy and biomechanics of the pediatric knee but also the ability to predict the remaining growth potential and familiarity with a wide range of reconstructive surgical procedures available for patients at different ages.

Impaction Fractures of the Lateral Femoral Condyle Related to Anterior Cruciate Ligament Injury: A Scoping Review Concerning Diagnosis, Prevalence, Clinical Importance, and Management.

Background: During pivot-shift anterior cruciate ligament (ACL) injury, bone bruises or impaction fractures of the lateral femoral condyle (LFC-IF) may occur due to impaction between the posterior part of the lateral tibial plateau and anterocentral part of the LFC. The purpose of the study was to systematically review the literature concerning the diagnosis, prevalence, clinical importance, and management of LFC-IF occurring during ACL injuries. Methods: Included were studies concerning impaction fractures of the anterocentral part of the LFC occurring during ACL injuries. Studies concerning only bone bruises or cartilage lesions, without subchondral bone impaction, were not included. A search was performed in Medline and Scopus databases, with final search in May 2022. A secondary search was conducted within the bibliographies of included articles and using "Cited In" option. Two authors independently extracted data in three domains: study design, LFC-IF characteristics, and LFC-IF importance and management. Results: A total of 35 studies were included for review with several studies reporting on multiple domains. Summarily, 31 studies were on the diagnosis and prevalence, 19 studies reported on the clinical importance, and 4 studies reported on the management of LFC-IF. Conclusions: A LFC-IF occurs due to the pivot-shift mechanism of ACL injury. Its radiological feature is defined as an impaction of terminal sulcus deeper than 1 mm and is present in up to 52% of patients with a torn ACL. An LFC-IF causes injury to the cartilage, probably leads to its progressive degeneration, and is significantly associated with an increased risk of a lateral meniscus injury. A large LFC-IF might be associated with greater rotational knee instability. Although several techniques of LFC-IF treatment were proposed, none of them has been evaluated on a large cohort of patients to date.

Orthopaedic knee scooter-related injury: prevalence and patient safety perception in a prospective cohort with exploratory risk factor analysis.

BACKGROUND: There is a paucity of research investigating the harms associated with orthopaedic knee scooter (OKS) use and patient safety perceptions. This prospective study aimed to define the prevalence of OKS-related injuries, describe the patient perceptions of OKS safety, and identify potential risk factors. METHODS: This study was conducted at a single foot and ankle fellowship-trained surgeon's community-based clinic from 6/2020 to 4/2021 and enrolled 134 patients. Our primary outcome was an OKS-related event (injury or fall) and informed an a priori power analysis. Point estimate of association magnitude was calculated as an odds ratio (OR) for statistically and clinically significant associations. RESULTS: There were 118 (88%) patients eligible for analysis; fourteen enrolled patients did not use OKS, and two withdrew. The prevalence of patient falls was 37% (44/118), and the prevalence of patient injury was 15% (18/118). Four percent of patients would not recommend OKS and 8% would not use an OKS again. Sedentary lifestyle increased risk (OR = 4.67, 1.52-14.35 95 CI) for OKS-related injury. CONCLUSIONS: Despite a high prevalence of patient falls (37%), there is a low prevalence of injury (15%) and a favorable perception of OKS safety. Sedentary lifestyles may be a risk factor for OKS-related injury and should be considered in the development of a risk model.

High prevalence of associated intra-articular injuries with increasing time period from anterior cruciate ligament injury to reconstruction, even in apparent copers.

BACKGROUND: It still unclear whether copers may bear the same time-sensitive risk of intra-articular injury as non-copers. The objectives were to investigate the clinical characteristics of copers and non-copers that have sustained an anterior cruciate ligament (ACL) injury, and to examine and compare the intra-articular pathologies in delayed ACL reconstruction (ACLR) in copers and noncopers. METHODS: Patients who sustained ACL injury while participating in high-performance sports and opted for non-operative treatment were enrolled in this study. Depending on the occurrence of the knee giving way, patients were classified into copers and noncopers. Clinical characteristics were compared between the two groups. Additionally, intra-articular injuries were evaluated for those who eventually underwent delayed ACLR. RESULTS: 11 of the 75 patients (14.7%) were classified as copers. No major differences were found in the clinical characteristics between groups. Following the initial non-operative treatment, 67 patients underwent delayed ACLR. When examining intra-articular abrasions at the time of surgery, non-copers who continued sports activities for 3 to 12 months exhibited a significantly higher rate of injury as opposed to their coper counterparts. However, the difference in the prevalence of intra-articular lesions between the two groups in patients who continued to play sports for at least 12 months before surgery was nominal. CONCLUSION: The rate of copers was relatively low in patients who resumed playing high-level sports after ACL injury. Additionally, even in copers, those who continued sports activities for more than 12 months had comparably high prevalence of intra-articular injuries with noncopers. STUDY DESIGN: Retrospective case-control study; Level of evidence, 3.

Delaying ACL reconstruction is associated with increased rates of medial meniscal tear.

PURPOSE: The aim of this study was to evaluate the relationship between the time from injury to ACL reconstruction (ACLR) and the rate as well as repairability of meniscal tears. Secondary aims were to evaluate the relationship between meniscal injury and Tegner Activity Scale, age, BMI, and gender. METHODS: Between 2012 and 2022, 1,840 consecutive ACLRs were performed. A total of 1,317 ACLRs were included with a mean patient age of 31.2 years ± 10.5 [16-60]. Meniscal tear was assessed during arthroscopy using the ISAKOS classification. Time from injury to ACLR, Tegner Activity Scale, age, BMI and gender were analysed in uni- and then in multivariate analyses. Patients were divided into four groups according to the time from injury to surgery: < 3 months (427; 32%), 3-6 months (388; 29%), 6-12 months (248; 19%) and > 12 months (254; 19%). RESULTS: Delaying ACLR > 12 months significantly increased the rate of medial meniscal (MM) injury (OR 1.14; p < 0.001). No correlation was found between a 3- or 6-month time from injury to surgery and MM tear. Performing ACLR > 3, 6, or 12 months after injury did not significantly increase the rate of lateral meniscal (LM) injury. Increasing Tegner activity scale was significantly associated with a lower rate of MM injury (OR 0.90; p = 0.020). An age > 30 years (OR 1.07; p = 0.025) and male gender (OR 1.13; p < 0.0001) was also associated with an increased rate of MM injury. Age > 30 years decreased the rate of MM repair (OR 0.85; p < 0.001). Male gender increased the rate of LM tear (OR 1.10; p = 0.001). CONCLUSION: Performing ACLR more than 12 months after injury was associated with increased rates of MM injury but not with lower rates of repairable lesions. An increased pre-injury Tegner activity score was associated with a decreased rate of MM tear. Age > 30 years was associated with an increased rate of MM tear with concomitant ACL injury and a decreased rate of repairability of MM tear. ACLR should be performed within 12 months from injury to prevent from the risk of MM injury. LEVEL OF EVIDENCE: Level III.

Return to Sport After Knee Injuries in Collegiate Wrestling.

Background: Wrestling is known to be a sport of relatively high injury incidence, and knee injuries account for a large percentage of those injuries. Treatment of these injuries varies considerably depending on injury and wrestler characteristics, leading to variability in complete recovery and return to sport (RTS). The purpose of this study was to evaluate injury trends, treatment strategies, and RTS characteristics after knee injuries in competitive collegiate wrestling. Methods: NCAA Division I collegiate wrestlers who sustained knee injuries between January 2010 and May 2020 were identified using an institutional Sports Injury Management System (SIMS). Wrestling-related knee, meniscus, and patella injuries were identified, and treatment strategies were documented to investigate potential recurrent injury trends. Descriptive statistics were used to quantify the number of days, practices, and competitions missed, return to sport times, and recurrent injuries among wrestlers. Results: Overall, 184 knee injuries were identified. After excluding non-wrestling injuries (n=11), 173 injuries remained (77 wrestlers). The mean age at time of injury was 20.8 ± 1.4 years, and the mean BMI was 25.9 ± 3.8 kg/m2. There were 135 primary injuries (74 wrestlers), which consisted of 72 (53%) ligamentous injuries, 30 (22%) meniscus injuries, 14 patellar injuries (10%), and 19 other injuries (14%). The majority of ligamentous injuries (93%) and patellar injuries (79%) were treated non-operatively, while the majority of meniscus tears (60%) underwent surgery. Twenty-three wrestlers (22%) sustained recurrent knee injuries, of which 76% were treated non-operatively after their initial injury. Recurrent injuries consisted of 12 (32%) ligamentous injuries, 14 (37%) meniscus injuries, eight (21%) patellar injuries, and four (11%) other injuries. Fifty percent of recurrent injuries were treated operatively. When comparing recurrent injuries to primary injuries, recurrent injuries had a significantly longer return to sport time (Recurrent 68.3 ± 96.0 days vs. Primary 26.0 ± 56.4 days, p=0.01). Conclusion: The majority of NCAA Division I collegiate wrestlers who sustained knee injuries were initially treated non-operatively, and approximately one in five wrestlers sustained recurrent injuries. Return to sport time was significantly increased after a recurrent injury. Level of Evidence: IV.

Delayed multiligament PCL reconstruction is associated with a higher prevalence of intraarticular injury and may influence treatment.

BACKGROUND: The aim of this study was to investigate differences in concomitant injury patterns and their treatment in patients undergoing early (≤ 12 weeks) and delayed (> 12 weeks) primary multiligament posterior cruciate ligament (PCL) reconstruction (PCL-R). METHODS: This study was a retrospective chart review of patients undergoing primary multiligament PCL-R at a single institution between 2008 and 2020. Multiligament PCL-R was defined as PCL-R and concurrent surgical treatment of one or more additional knee ligament(s). Exclusion criteria included isolated PCL-R, PCL repair, and missing data for any variable. Patients were dichotomized into early (≤ 12 weeks) and delayed (> 12 weeks) PCL-R groups based on the time elapsed between injury and surgery. Between-group comparison of variables were conducted with the Chi-square, Fisher's exact, and independent samples t-tests. RESULTS: A total of 148 patients were eligible for analysis, with 57 (38.5%) patients in the early and 91 (61.1%) patients in the delayed multiligament PCL-R groups. Concomitant LCL/PLC reconstruction (LCL-R/PLC-R) was performed in 55 (60%) of delayed multiligament PCL-Rs and 23 (40%) of early PCL-Rs (p = 0.02). Despite similar rates of meniscus injury, concomitant meniscus surgery was significantly more prevalent in the early (n = 25, 44%) versus delayed (n = 19, 21%) multiligament PCL-R group (p = 0.003), with a significantly greater proportion of medial meniscus surgeries performed in the early (n = 16, 28%) compared to delayed (n = 13, 14%) PCL-R group (p = 0.04). The prevalence of knee cartilage injury was significantly different between the early (n = 12, 24%) and delayed (n = 41, 46%) multiligament PCL-R groups (p = 0.01), with more frequent involvement of the lateral (n = 17, 19% vs. n = 3, 5%, respectively; p = 0.04) and medial (n = 31, 34% vs. n = 6, 11%, respectively; p = 0.005) femoral condyles in the delayed compared to the early PCL-R group. CONCLUSIONS: Given higher rates of chondral pathology and medial meniscus surgery seen in delayed multiligament PCL-R, early management of PCL-based multiligament knee injury is recommended to restore knee stability and potentially prevent the development of further intraarticular injury. LEVEL OF EVIDENCE: Level III.

Leveraging Insurance Claims Data to Identify Risk Factors for Posttraumatic Osteoarthritis After Multiligament Knee Reconstruction.

BACKGROUND: The incidence of subsequent posttraumatic osteoarthritis (OA) diagnosis after surgery and the associated risk factors have been well reported after single-ligament anterior cruciate ligament (ACL) reconstruction; however, to date, the incidence of posttraumatic OA for those who have experienced multiligament knee injury (MLKI) has been reported only in relatively small, single-center studies. PURPOSE: To compare the incidence of OA diagnoses between patients with ACL injury versus patients with MLKI and to identify risk factors for OA diagnosis after MLKI. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: This study used the PearlDiver Mariner database, which contains insurance claims information on >151 million orthopaedic patients. We identified 2 cohorts for this study by using Current Procedural Terminology codes. The cohorts included patients between the ages of 16 and 60 who underwent either isolated ACL reconstruction (n = 114,282) or MLKI reconstruction (n = 3325) between July 1, 2010, and August 30, 2016. MLKI reconstruction was operationally defined as ACL reconstruction plus concurrent surgical treatment of ≥1 additional ligaments. Demographic factors, concomitant meniscal and cartilage procedures, and subsequent reoperation to restore motion were recorded, as was the incidence of knee OA diagnosis within 5 years of the index surgical procedure. OA incidence and demographic and surgical factors were compared (1) between ACL and MLKI groups and (2) between patients with MLKI either with or without OA diagnosis. RESULTS: A significantly greater proportion of patients with MLKI were diagnosed with knee OA within 5 years of surgery (MLKI = 299/3325 [9.0%] vs ACL = 6955/114,282 [6.1%]; P < .0001) (odds ratio [OR], 1.52; 95% CI, 1.35-1.72; P < .001). Factors associated with increased odds of OA diagnosis after MLKI included age ≥30 years (OR, 5.90), reoperation to restore motion (OR, 2.54), obesity (OR, 1.96), mood disorder diagnoses (OR, 1.85), partial meniscectomy (OR, 1.85), and tobacco use (OR, 1.72). Concomitant meniscal repair was protective against OA diagnosis (OR, 0.06). CONCLUSION: OA incidence was greater after MLKI reconstruction than after isolated ACL reconstruction. Potentially modifiable risk factors for OA after MLKI were identified and include obesity, tobacco use, depression, and the need for motion-restoring surgery.

Factors Associated With Meniscal and Articular Cartilage Injury in the PLUTO Cohort.

BACKGROUND: Anterior cruciate ligament (ACL) injuries in adults are frequently accompanied by meniscal and articular cartilage damage. However, little is known regarding the association, if any, between physical maturity, hypermobility, or bone bruising and these associated injuries in skeletally immature patients with ACL tears. PURPOSE: To determine if physical maturity, hypermobility, and/or bone bruising is associated with concomitant meniscal and articular cartilage injury in skeletally immature patients with ACL tears. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: At 10 institutions in the United States, consecutive skeletally immature patients with complete ACL tears were enrolled between January 2016 and June 2020. Univariable and multivariable logistic regression analysis was used to assess the effect of variables on the likelihood of articular cartilage and meniscal injury. RESULTS: A total of 748 patients were analyzed. Of these, 85 patients (11.4%) had articular cartilage injuries. These patients had a higher bone age (13.9 vs 13.1 years; P = .001), a higher Tanner stage (P = .009), and increased height (162.9 vs 159.9 cm; P = .03) and were heavier (57.8 vs 54.0 kg; P = .02). For each additional Tanner stage, the odds of articular cartilage injury increased approximately 1.6 times (P < .001). Of the total patients, 423 (56.6%) had meniscal tears. Those with meniscal tears were older (12.6 vs 12.0 years; P < .001), had a higher bone age (13.5 vs 12.8 years; P < .001), had a higher Tanner stage (P = .002), had increased height (162.2 vs 157.6 cm; P < .001), and were heavier (56.6 vs 51.6 kg; P < .001). For each additional Tanner stage, the odds of a meniscal tear increased approximately 1.3 times (P < .001). No association was detected between hypermobility or bone bruising and the likelihood of articular cartilage or meniscal injury. Multivariable regression revealed that increasing Tanner stage was associated with an increasing risk of articular cartilage injury, while weight was associated with an increasing risk of meniscal injury. CONCLUSION: Increasing physical maturity is associated with increased risks of concomitant articular cartilage and meniscal injury in skeletally immature patients with ACL tears. Hypermobility and bone bruising are not associated with articular cartilage or meniscal injury, suggesting that physical maturity, rather than ligamentous laxity, is the primary risk factor for associated injuries in skeletally immature patients with an ACL tear.

Meniscal injuries in skeletally immature children with tibial eminence fractures. Systematic review of literature.

PURPOSE: Although the mechanisms of injury are similar to ACL rupture in adults, publications dealing with meniscal lesions resulting from fractures of the intercondylar eminence in children are much rarer. The main objective was to measure the frequency of meniscal lesions associated with tibial eminence fractures in children. The second question was to determine whether there is any available evidence on association between meniscal tears diagnostic method, and frequencies of total lesions, total meniscal lesions, and total entrapments. METHODS: A comprehensive literature search was performed using PubMed and Scopus. Articles were eligible for inclusion if they reported data on intercondylar tibial fracture, or tibial spine fracture, or tibial eminence fracture, or intercondylar eminence fracture. Article selection was performed in accordance with the PRISMA guidelines. RESULTS: In total, 789 studies were identified by the literature search. At the end of the process, 26 studies were included in the final review. This systematic review identified 18.1% rate of meniscal tears and 20.1% rate of meniscal or IML entrapments during intercondylar eminence fractures. Proportion of total entrapments was significantly different between groups (17.8% in the arthroscopy group vs. 6.2% in the MRI group; p < .0001). Also, we found 20.9% of total associated lesions in the arthroscopy group vs. 26.1% in the MRI group (p = .06). CONCLUSION: Although incidence of meniscal injuries in children tibial eminence fractures is lower than that in adults ACL rupture, pediatric meniscal tears and entrapments need to be systematically searched. MRI does not appear to provide additional information about the entrapment risk if arthroscopy treatment is performed. However, pretreatment MRI provides important informations about concomitant injuries, such as meniscal tears, and should be mandatory if orthopaedic treatment is retained. MRI modalities have yet to be specified to improve the diagnosis of soft tissues entrapments. STUDY DESIGN: Systematic review of the literature REGISTRATION: PROSPERO N° CRD42021258384.

Incidence and concomitant chondral injuries in a consecutive cohort of primary traumatic patellar dislocations examined with sub-acute MRI.

PURPOSE: To present age- and sex-specific cumulative annual incidences of primary traumatic lateral patellar dislocation (LPD) and to detail patient characteristics and concomitant chondral injuries including osteochondral fractures, as visualized on magnetic resonance imaging (MRI), in a large consecutive cohort of knee-injured individuals. METHODS: Data on primary traumatic lateral patellar dislocations were collected from a large consecutive cohort of knee injuries examined with sub-acute MRI in a single centre with a well-defined catchment area. Annual incidences for different age-groups in relation to gender were calculated together with the risk of concomitant chondral and osteochondral injury, during sports and in general. RESULTS: A total of 184 primary patellar dislocations were identified in the cohort of 1145 acute knee injuries (n=175) and surgical records (n=9). Knee MRI was performed within a median of six days of injury. Median age of patients with primary LPD was 16 years (interquartile range, 14-21; range, 9-47) and 41% were females. Males were significantly older than females at the time of injury (median age 17 vs. 15, P = 0.021) and sustained their primary LPD during sports more often than females (65 vs. 40%, P < 0.001). Primary LPD occurred most frequently at the age of 13 to 15 years where the annual incidence was 125 (95% CI, 96-160) per 100,000 persons. The overall annual incidence of primary LPD was 14 (95% CI, 12-16) per 100,000 persons, with a predominance of males versus females (17 vs. 11, P = 0.01). Concomitant lesions to joint surfaces were displayed on MRI or during surgery in 75 (43%) knees. Osteochondral fractures were seen in 32 knees (18%). We found no statistically significant difference in the risk of osteochondral fracture between those injured during sports or during leisure activity (14 vs. 24%, P = 0.08). CONCLUSIONS: The annual incidence of first-time patellar dislocation was found to be 14 per 100,000 individuals with the highest incidence found among those aged 13-15 years. Primary LPD was more common among males and was sustained during sports activity in 55% of the cases. Associated injuries to the chondral surfaces should be expected in 43% of knees with primary LPD where 18% represent osteochondral fractures.

Incidence and type of meniscal tears in multilligament injured knees.

PURPOSE: Meniscal injuries occurring during multi-ligament knee injuries (MLKI) are underreported. The purpose of this study was to compare the incidence and type of meniscal tears seen at the time of multi-ligament reconstruction surgery compared to those occurring during isolated anterior cruciate ligament (ACL) surgery. METHODS: Patients undergoing surgical treatment for MLKI and ACL-only injuries between 2010 and 2020 were reviewed. Two-hundred and thirty-five patients were included in the MLKI group. There were 131 chronic injuries and 104 acute injuries. Two-hundred and twenty-two ACL-only chronic injuries were used as a control group for comparison with the chronic MLKI group. Demographic data, type of meniscal tears, ligament injury patterns (Schenck classification) and time from injury to surgery were recorded. A delayed procedure was defined by a 4-week interval after the knee injury. RESULTS: A meniscus was torn in 69 knees (29.4%): 36 knees (15.3%) with an isolated medial meniscus tear, 33 knees (17.9%) with an isolated lateral meniscus tear,.Nine knees (3.8%) had both menisci torn. MLKI with medial or lateral-sided bicruciate ligament injuries (KDIIIM-KDIIIL) were significantly associated with a lower rate of meniscal tears than knee injuries involving the ACL-only and medial/lateral-sided ligament injuries (KDI) (medial-sided injuries p = 0.025; lateral-sided injuries p = 0.049). Lateral-sided injuries had significantly less meniscal damage than medial-sided injuries: 22/124 (17.7%) vs. 41/100 (41%); (p < 0.001). No significant differences were found for frequency, type and distribution of meniscal tears between acute and chronic MLKI surgery. ACL-only chronic injuries were associated with a higher rate of meniscal tears: 123/222 knees (55.4%) vs. 35/131 (26.9%) chronic MLKI; (p < 0.001), mainly involving the medial meniscus: 102/222 (46%) vs. 18/131 (13.7%); (p < 0.001). CONCLUSIONS: Meniscal tears were less common in the MLKI group than in the isolated ACL injury group. The degree of ligament injury patterns and the side of the injured collateral ligament influenced the type and incidence of meniscal damage. Contrary to isolated ACL injuries, a delayed procedure was not associated with a higher rate of meniscal lesions but did influence the type of treatment. Understanding of meniscal tears patterns in MLKI helps to improve the treatment management of these complex injuries.

Over One-Third of Patients With Multiligament Knee Injuries and an Intact Anterior Cruciate Ligament Demonstrate Medial Meniscal Ramp Lesions on Magnetic Resonance Imaging.

PURPOSE: To determine the incidence of ramp lesions and posteromedial tibial plateau (PMTP) bone bruising on magnetic resonance imaging (MRI) in patients with multiligament knee injuries (MLKIs) and an intact anterior cruciate ligament (ACL). METHODS: A retrospective review of consecutive patients surgically treated for MLKIs at 2 level I trauma centers between January 2001 and March 2021 was performed. Only MLKIs with an intact ACL that received MRI scans within 90 days of the injury were included. All MLKIs were diagnosed on MRI and confirmed with operative reports. Two musculoskeletal radiologists retrospectively rereviewed preoperative MRIs for evidence of medial meniscus ramp lesions (MMRLs) and PMTP bone bruises using previously established classification systems. Intraclass correlation coefficients were used to calculate the reliability between the radiologists. The incidence of MMRLs and PMTP bone bruises was quantified using descriptive statistics. RESULTS: A total of 221 MLKIs were identified, of which 32 (14.5%) had an intact ACL (87.5% male; mean age of 29.9 ± 8.6 years) and were included. The most common MLKI pattern was combined injury to the posterior cruciate ligament and posterolateral corner (n = 27, 84.4%). PMTP bone bruises were observed in 12 of 32 (37.5%) patients. Similarly, MMRLs were diagnosed in 12 of 32 (37.5%) patients. A total of 8 of 12 (66.7%) patients with MMRLs demonstrated evidence PMTP bone bruising. CONCLUSIONS: Over one-third of MLKI patients with an intact ACL were diagnosed with MMRLs on MRI in this series. PMTP bone bruising was observed in 66.7% of patients with MMRLs, suggesting that increased vigilance for identifying MMRLs at the time of ligament reconstruction should be practiced in patients with this bone bruising pattern. LEVEL OF EVIDENCE: Level IV, retrospective case series.

Prevention of knee joint injuries in winter sports training / Prevenção de lesões articulares do joelho no treino dos esportes de inverno / Prevención de las lesiones articulares de la rodilla en el entrenamiento de los deportes de invierno

ABSTRACT Introduction: With the 2022 Winter Olympic Games launch, ice and snow sports have come into the spotlight, receiving government incentives to encourage their practice. Objective: Examine the causes of knee injury in skiers, proposing preventive measures for joint injury. Methods: The current situation of joint injury in skiers' knees, joint movement in skiing, the cause of joint injury, and the prevention of joint injury were analyzed, and scientific prevention and corresponding treatment plan were developed according to the results of the analysis. Results: The injury rate among skiers is high. Ligament injury, tendon injury, and muscle strain are the three main types of injury. There are 57 mild injuries of various types to the knee joint - 53.27% of all injuries; 41 moderate injuries, representing 38.32% of all injuries; 9 serious injuries, representing 8.41% of all injuries, with minor injuries. Conclusion: This article examines knee motion and the causes of knee injury in skiers and proposes preventive measures for joint injury. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução: Com o lançamento dos Jogos Olímpicos de Inverno de 2022, os esportes de gelo e neve entraram em evidência, recebendo incentivos governamentais para encorajamento de sua prática. Objetivo: Examinar as causas da lesão no joelho em esquiadores, propondo medidas preventivas para a lesão articular. Métodos: Foram analisadas a situação atual de lesão articular nos joelhos dos esquiadores, o movimento articular no esqui, a causa das lesões articulares e a prevenção de lesões articulares, além de um plano de prevenção científica e tratamento correspondente, de acordo com os resultados da análise. Resultados: A taxa de lesões em esquiadores é alta. Lesão ligamentar, lesão tendinosa e tensão muscular são os três principais tipos de lesão. Há 57 lesões leves de vários tipos na articulação do joelho - 53,27% de todas as lesões; 41 lesões moderadas, representando 38,32% de todas as lesões; 9 lesões graves, representando 8,41% de todos os ferimentos, com ferimentos menores. Conclusão: Este artigo examina o movimento do joelho e as causas da lesão no joelho em esquiadores, e propõe medidas preventivas para lesão articular. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: Con la puesta en marcha de los Juegos Olímpicos de Invierno de 2022, los deportes de hielo y nieve han pasado a ser el centro de atención, recibiendo incentivos gubernamentales para fomentar su práctica. Objetivo: Examinar las causas de las lesiones de rodilla en los esquiadores, proponiendo medidas preventivas de las lesiones articulares. Métodos: Se analizó la situación actual de las lesiones articulares en las rodillas de los esquiadores, el movimiento articular en el esquí, la causa de las lesiones articulares y la prevención de las mismas, y se elaboró un plan científico de prevención y tratamiento correspondiente según los resultados del análisis. Resultados: El índice de lesiones en los esquiadores es alto. Las lesiones de ligamentos, las lesiones de tendones y las distensiones musculares son los tres tipos principales de lesiones. Hay 57 lesiones leves de diversos tipos en la articulación de la rodilla, el 53,27% de todas las lesiones; 41 lesiones moderadas, que representan el 38,32% de todas las lesiones; 9 lesiones graves, que representan el 8,41% de todas las lesiones, con lesiones leves. Conclusión: Este artículo examina el movimiento de la rodilla y las causas de las lesiones de rodilla en los esquiadores, y propone medidas preventivas para las lesiones articulares. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

Lesiones ligamentarias de rodilla asociadas a fracturas de diáfisis femoral: epidemiología y diagnóstico: revisión narrativa de la bibliografía / Knee ligamentous injury associated to femoral shatf fracture: epidemiology and diagnosis: narrative review of the literatur / Lesões ligamentares do joelho associadas a fraturas diafisárias do fêmur: epidemiologia e diagnóstico: revisão narrativa da literatura

Introducción: Las fracturas de la diáfisis femoral son lesiones que requieren gran energía y a menudo asocian otras lesiones. Este es el caso de las lesiones ligamentarias de rodilla, las cuales pueden pasar desapercibidas por el equipo médico tratante. El objetivo de nuestro trabajo es revisar la literatura existente sobre esta asociación lesional. Dentro de la misma se buscará la metodología diagnóstica utilizada y la incidencia de las lesiones ligamentarias. Materiales y métodos: Se realizó una búsqueda bibliográfica de forma sistematizada a través de los portales de búsqueda PubMed y Timbó. La búsqueda alcanzó un total de 3099 artículos y de acuerdo a los criterios de inclusión y exclusión se seleccionaron 15 trabajos. Resultados: Los diferentes artículos utilizaron examen físico bajo anestesia, radiografías en estrés, artroscopía o resonancia nuclear magnética para establecer el diagnóstico de las lesiones ligamentarias asociadas a las fracturas de diáfisis femoral. Un 22,5% de las fracturas femorales asoció lesión ligamentaria de rodilla, siendo la lesión del ligamento cruzado anterior el 34% de las lesiones reportadas. Discusión: Se evidencia una gran variabilidad en la incidencia de lesiones ligamentarias y de cuál es el ligamento más frecuentemente lesionado, yendo desde 5,3% a 52,5% en estudios tanto retrospectivos como prospectivos con bajos números de pacientes. Se plantea un algoritmo diagnóstico para los pacientes que puedan presentar esta asociación lesional, para evitar que los mismos pasen desapercibidos al equipo médico tratante. Logrando un diagnóstico precoz se puede mejorar el pronóstico de estos pacientes. Conclusión: De nuestra revisión se desprende que en el contexto de una fractura de diáfisis femoral un 22,5% de los pacientes presenta lesiones ligamentarias de rodilla con un 34% de compromiso del LCA. Sin embargo, estas cifras son muy variables en los distintos trabajos. Por esta razón, creemos necesario llevar a cabo un estudio prospectivo con mayor número de pacientes para lograr valorar la verdadera epidemiología de estas lesiones.

Introduction: Femoral shaft fractures require great energy and are often associated with other injuries. This is the case of knee ligament injuries, which can go unnoticed by the treating physician The objective of our work is to review the existing literature on this injury association. Within it, the diagnostic methodology used and the incidence of ligamentous injuries will be sought. Materials and methods: A bibliographic search was carried out in a systematic way through the search portals PubMed and Timbó. The search reached a total of 3099 articles and according to the inclusion and exclusion criteria, 15 works were selected. Results: The different articles used physical examination under anesthesia, stress radiographs, arthroscopy or magnetic resonance imaging to establish the diagnosis of ligamentous injuries associated with femoral diaphysis fractures. 22.5% of femoral fractures were associated with knee ligament injury, with anterior cruciate ligament accounting for 34% of reported injuries. Discussion: There is evidence of a great variability in the incidence of ligament injuries and which is the most frequently injured ligament, ranging from 5.3% to 52.5% in both retrospective and prospective studies with low numbers of patients. A diagnostic algorithm is proposed for patients who may present this lesional association, to prevent them from going unnoticed by the treating medical team. Achieving an early diagnosis can improve the prognosis of these patients. Conclusion: Our review shows that in the context of a femoral diaphysis fracture, 22.5% of patients present knee ligament injuries with 34% of ACL involvement. However, these figures are highly variable in the different studies. For this reason, we believe it is necessary to carry out a prospective study with a larger number of patients in order to assess the true epidemiology of these lesions.

Introdução: As fraturas da diáfise do fêmur são lesões que requerem grande energia e muitas vezes estão associadas a outras lesões. É o caso das lesões ligamentares do joelho, que podem passar despercebidas pela equipe médica que o trata. O objetivo do nosso trabalho é revisar a literatura existente sobre essa associação lesional. Dentro dele, será buscada a metodologia diagnóstica utilizada e a incidência de lesões ligamentares. Materiais e métodos: Foi realizada uma busca bibliográfica de forma sistemática através dos portais de busca PubMed e Timbó. A busca atingiu um total de 3099 artigos e de acordo com os critérios de inclusão e exclusão, 15 trabalhos foram selecionados. Resultados: Os diferentes artigos utilizaram o exame físico sob anestesia, radiografias de estresse, artroscopia ou ressonância magnética para estabelecer o diagnóstico de lesões ligamentares associadas às fraturas da diáfise do fêmur. 22,5% das fraturas do fêmur foram associadas à lesão ligamentar do joelho, sendo a lesão do ligamento cruzado anterior responsável por 34% das lesões relatadas. Discussão: Há evidências de uma grande variabilidade na incidência de lesões ligamentares e qual é o ligamento mais frequentemente lesado, variando de 5,3% a 52,5% em estudos retrospectivos e prospectivos com baixo número de pacientes. Um algoritmo diagnóstico é proposto para os pacientes que podem apresentar essa associação lesional, para evitar que passem despercebidos pela equipe médica responsável. O diagnóstico precoce pode melhorar o prognóstico desses pacientes. Conclusão: Nossa revisão mostra que no contexto de fratura da diáfise do fêmur, 22,5% dos pacientes apresentam lesões ligamentares do joelho com 34% de envolvimento do LCA. No entanto, esses números são altamente variáveis ​​nos diferentes estudos. Por esse motivo, acreditamos ser necessário realizar um estudo prospectivo com um número maior de pacientes para avaliar a verdadeira epidemiologia dessas lesões.

Knee joint injuries in young basketball players / Lesões na articulação do joelho em jovens jogadores de basquetebol / Lesiones de la articulación de la rodilla en jóvenes jugadores de baloncesto

ABSTRACT Introduction Basketball is a popular sport globally, and as the development of college basketball develops, basketball injuries also tend to increase. The knee has the highest injuries and problems incidence, reducing the athlete's ability and shortening their professional career. Objective Explore the causes and characteristics of knee joint injuries in basketball players, comparing their different levels, performances, and positions. Methods 600 college basketball players were studied. Current and past injuries were collected. A questionnaire on lifestyle, behavior, and habits was also applied, and their levels of physical ability and knowledge were also evaluated. Statistical methods were employed to investigate the characteristics and causes of knee joint injuries in young athletes. Results Among knee joint injuries of adolescent basketball players, there were more medial collateral ligament injuries and meniscal injuries. The probabilities are 34.1% and 24.3%, respectively. Patellar strain and cruciate ligament injury accounted for 12.1% and 19.5%, respectively, and the probability of fracture injury was 2.4%. Conclusion The knee joint is one of the most vulnerable joints in basketball. The consequences of its injury can bring an athletic career down and have a considerable impact on athletes' physical and mental health. Evidence Level II; Therapeutic Studies - Investigating the results.

RESUMO Introdução O basquete é um esporte popular em todo o mundo e com o desenvolvimento do basquetebol universitário, as lesões causadas pelo basquetebol também tendem a aumentar. O joelho possui o maior índice de lesões e problemas nessa articulação também reduzem a capacidade do atleta, encurtando a sua carreira profissional. Objetivo Explorar as causas e características das lesões na articulação do joelho em jogadores de basquetebol comparando seus diferentes níveis, desempenhos e posições. Métodos 600 universitários jogadores de basquete foram estudados. Foram arquivadas as lesões atuais e pregressas. Um questionário sobre estilo de vida, comportamento e hábitos também foi aplicado; seus níveis de habilidade física e conhecimento foram avaliados. Métodos estatísticos investigaram as características e causas das lesões na articulação do joelho nos jovens atletas. Resultados Entre as lesões articulares de joelho nos jogadores adolescentes de basquete, houve mais lesões ligamentares colaterais mediais e lesões meniscais. As probabilidades são de 34,1% e 24,3%, respectivamente. A tensão patelar e a lesão do ligamento cruzado representaram 12,1% e 19,5%, respectivamente, e a probabilidade de lesão por fratura foi de 2,4%. Conclusão A articulação do joelho é uma das partes mais vulneráveis do basquetebol. As consequências de sua lesão podem acarretar o fim da carreira esportiva, tendo um impacto considerável sobre a saúde física e mental dos atletas. Nível de evidência II; Estudos Terapêuticos - Investigação de Resultados.

RESUMEN Introducción El baloncesto es un deporte popular en todo el mundo y con el desarrollo del baloncesto universitario, las lesiones causadas por el baloncesto también tienden a aumentar. La rodilla tiene el mayor índice de lesiones y los problemas en esta articulación también reducen la capacidad del deportista, acortando su carrera profesional. Objetivo Explorar las causas y características de las lesiones de la articulación de la rodilla en jugadores de baloncesto comparando sus diferentes niveles, rendimientos y posiciones. Métodos Se estudiaron 600 jugadores de baloncesto universitario. Se presentaron las lesiones actuales y pasadas. También se aplicó un cuestionario sobre el estilo de vida, el comportamiento y los hábitos; y también se evaluaron sus niveles de capacidad física y conocimientos. Se emplearon métodos estadísticos para investigar las características y las causas de las lesiones de la articulación de la rodilla en atletas jóvenes. Resultados Entre las lesiones de la articulación de la rodilla de los jugadores de baloncesto adolescentes, hubo más lesiones del ligamento colateral medial y de menisco. Las probabilidades son del 34,1% y del 24,3%, respectivamente. La distensión rotuliana y la lesión del ligamento cruzado representaron el 12,1% y el 19,5%, respectivamente, y la probabilidad de lesión por fractura fue del 2,4%. Conclusión La articulación de la rodilla es una de las partes más vulnerables del baloncesto. Las consecuencias de su lesión pueden llevar al fin de una carrera deportiva, teniendo un impacto considerable en la salud física y mental de los atletas. Nivel de evidencia II; Estudios terapéuticos - Investigación de resultados.