Impact of Social Determinants of Health on Adolescent Idiopathic Scoliosis Curve Severity.

INTRODUCTION: Social determinants of health have been shown to influence the health and outcomes of pediatric patients. Adolescent idiopathic scoliosis (AIS) may be particularly sensitive to such factors as early diagnosis and treatment can obviate the need for surgical intervention. The purpose of this study was to analyze the effect that social determinants of health have on the severity of AIS at presentation and at the time of surgery. METHODS: A retrospective review was conducted for consecutive patients who underwent posterior spinal fusion for AIS from 2020 to 2022. Demographic data was collected, while insurance status (private vs. public) and childhood opportunity index (COI) categories (LOW vs. HIGH) were used as a proxy for socioeconomic status. Curve magnitude at the initial presentation and at the latest preoperative visit were recorded with a threshold of 25 to 40 degrees considered within the bracing range. Univariate and multivariate analysis was done to compare differences between subgroups as appropriate. RESULTS: A total of 180 patients with mean initial and preoperative major curve angles of 48 and 60 degrees were included. Statistically significant differences in race and insurance types were appreciated, with the LOW COI group having a higher proportion of underrepresented minority and publicly insured patients than the HIGH COI group ( P <0.001). Patients within the LOW COI group presented with an initial curve that was, on average, 6 degrees more severe than those within the HIGH group ( P =0.009) and a preoperative curve that was 4 degrees larger than those within the HIGH group ( P =0.015). Similarly, only 13% of patients within the LOW COI group presented with curves within the bracing threshold, compared with 31% in the HIGH COI group ( P =0.009). CONCLUSION: Socioeconomic status plays a significant role in the severity of AIS. Specifically, patients with lower COI tend to present with curve magnitudes beyond what is responsive to nonsurgical treatment, leading to larger curves at the time of surgery. Future work should focus on addressing social inequalities to optimize the treatment and outcomes of AIS patients. LEVEL OF EVIDENCE: Level III- Retrospective Comparative Study.

Inappropriate Pediatric Orthopaedic Emergency Department Transfers: A Burden on the Health Care System.

BACKGROUND: Though the importance of level 1 pediatric trauma has repeatedly been shown to lessen both morbidity and mortality in critically injured children, these same tertiary referral centers also receive numerous transfers of patients with less severe injuries. This not only leads to increased costs and use of limited facility resources but, oftentimes, frustration and unnecessary expense to those families for whom transfer was avoidable. Prior work has demonstrated that half of all inappropriate pediatric interfacility transfers are due to orthopedic injuries. This study aims to evaluate the incidence of inappropriate transfers of pediatric patients with isolated orthopedic injuries to a pediatric level 1 trauma center and identify factors associated with such transfers. METHODS: All patients transferred to a large metropolitan level 1 pediatric trauma center for isolated orthopedic injuries over a 6-year period were retrospectively evaluated. Medical records were reviewed for demographic and injury data, including age, gender, race, social deprivation index, insurance status, location of transferring institution, timing of transfer, and availability of orthopedic on-call coverage at transferring institution. The transfer was deemed to be appropriate if the patient required a sedated reduction, was admitted to the hospital, or was taken to the operating room within 24 hours of transfer. Regression analysis was reviewed for each of the demographic, patient, and transfer characteristics in an attempt to isolate those associated with inappropriate transfer. RESULTS: In all, 437 transfers occurred during the study period. Of these, 112 (26%) were deemed inappropriate. 4% of patients transferred for orthopedic injuries did not receive an orthopedic consult following the transfer. Non-white patients were more likely than white patients to be transferred inappropriately (34.01% vs. 21.58%, P=0.009 ). No other demographic characteristic was predictive of inappropriate transfer. There was no difference in the rate of appropriate transfer between patients with private insurance versus government-funded, self-paying, or uninsured patients. The timing of transfer (night vs. day and weekday vs. weekend) did not affect the appropriateness of transfer. Facilities with orthopaedic on-call coverage were more likely to inappropriately transfer patients than those without (26.6% vs. 23.4%, P<0.001 ). CONCLUSION: A quarter of patients transferred for isolated orthopaedic injuries were inappropriately transferred. Unlike studies published in adult literature, the timing of transfer (overnight and weekend) and the insurance status of the patient did not appear to play a role in the appropriateness of transfer. Inappropriate and unnecessary trauma transfers create a significant burden on tertiary referral centers. Raising awareness of the high incidence of unnecessary transfers coupled with enhanced education of outside emergency medicine providers may result in better stewardship of health care resources, limit delays in patient care, and reduce strain on both the health care delivery system and the families of injured children. LEVEL OF EVIDENCE: Level III-Therapeutic Study.

Predictors of Persistent Limp Following Proximal Femoral Varus Osteotomy for Perthes Disease.

INTRODUCTION: One of the most popular containment procedures for Legg-Calvé-Perthes disease (LCPD) is proximal femur varus osteotomy (PFO). While generally successful in achieving containment, PFO can cause limb length discrepancy, abductor weakness, and (of most concern for families) a persistent limp. While many studies have focused on radiographic outcomes following containment surgery, none have analyzed predictors of this persistent limp. The aim of this study was to determine clinical, radiographic, and surgical risk factors for persistent limp 2 years after PFO in children with LCPD. METHODS: A retrospective review of a prospectively collected multicenter database was conducted for patients aged 6 to 11 years at disease onset with unilateral early-stage LCPD (Waldenström I) who underwent PFO. Limp status (no, mild, and severe), age, BMI, and pain scores were obtained at initial presentation, 3-month, and 2-year postoperative visits. Preoperative and follow-up radiographs were used to measure traditional morphologic hip metrics including acetabular index (AI), lateral center-edge angle (LCEA), and femoral neck-shaft angle (NSA). Univariate analysis as well as multivariate logistic regression models were used to analyze factors associated with mild and severe limp at the 2-year visit. RESULTS: A total of 95 patients met the inclusion criteria, and of these 50 patients underwent concomitant greater trochanter apophysiodesis (GTA) at the time of PFO. At the 2-year visit, there were 38 patients (40%) with a mild or severe limp. Multivariate logistic regression revealed no significant radiographic factors associated with a persistent limp. However, lower 2-year BMI and undergoing GTA were associated with decreased rates of persistent limp regardless of age ( P <0.05). When stratifying by age of disease onset, apophysiodesis appeared to be protective against any severity of limp in patients aged 6 to 8 years old ( P = 0.03), but not in patients 8 years or older ( P = 0.49). CONCLUSIONS: Persistent limp following PFO is a frustrating problem that was seen in 40% of patients at 2 years. However, lower follow-up BMI and performing a greater trochanter apophysiodesis, particularly in patients younger than 8 years of age, correlated with a lower risk of postoperative limp.

Rotator Cuff Injuries in the Pediatric Population: A Retrospective Review of Patient Characteristics and Treatment at a Single Center.

BACKGROUND: As youth participation in contact and overhead sports has increased in recent decades, so has the occurrence of injuries of the shoulder. Rotator cuff injury (RCI) is an infrequent shoulder pathology in pediatric patients and its description in the literature has been scarce. A greater understanding of RCI characteristics and treatment outcomes in children and adolescents would improve our understanding of this pathology and help to better guide clinical decision-making. HYPOTHESIS: To identify pediatric patients with magnetic resonance imaging-confirmed RCI treated at a single center to summarize injury characteristics, treatment, and outcomes. It was hypothesized that injuries would occur predominantly in overhead throwing athletes and would demonstrate good outcomes among both operatively and nonoperatively treated patients. STUDY DESIGN: Cross-sectional study. LEVEL OF EVIDENCE: Level 4. METHODS: A retrospective review of pediatric patients (<18 years old) diagnosed with and treated for an RCI between January 1, 2011 and January 31, 2021. Patient demographics, injury mechanism and type, treatment, and outcomes were collected. Descriptive statistics were performed. Bivariate testing was used to compare operatively and nonoperatively treated cohorts. RESULTS: A total of 52 pediatric patients treated for a rotator cuff avulsion, partial tear, or complete tear were identified. Mean age was 15 years and 67% of patients were male. Injuries were related most commonly to participation in throwing sports. Operative management occurred in 23% of patients, while 77% were managed nonoperatively. Treatment cohorts differed based on tear type, with all complete tears being managed operatively (P < 0.01). Associated shoulder pathology was common, with the most frequent finding being anterior shoulder instability pathology. Return to play was longer for operatively managed patients (7.1 vs 4.5 months; P < 0.01). CONCLUSION: The present study expands the limited data available regarding RCIs in pediatric patients. Most injuries are associated with sports and involve the supraspinatus tendon. RCIs were associated with good outcomes and low rates of reinjury in patients managed both nonoperative and operatively. RCI should be considered in throwing athletes with shoulder pain, even in skeletally immature patients. CLINICAL RELEVANCE: This retrospective study fills the hole in the literature by detailing the patterns associated with RCI characteristics and treatment outcomes. In contrast to studies of adult RCIs, our results suggest that outcomes are good regardless of treatment type.

Efficacy of manual therapy for sacroiliac joint pain syndrome: a systematic review and meta-analysis of randomized controlled trials.

INTRODUCTION: This study examined the efficacy of manual therapy for pain and disability measures in adults with sacroiliac joint pain syndrome (SIJPS). METHODS: We searched six databases, including gray literature, on 24 October 2023, for randomized controlled trials (RCTs) examining sacroiliac joint (SIJ) manual therapy outcomes via pain or disability in adults with SIJPS. We evaluated quality via the Physiotherapy Evidence Database scale and certainty via Grading of Recommendations, Assessment, Development, and Evaluation (GRADE). Standardized mean differences (SMDs) in post-treatment pain and disability scores were pooled using random-effects models in meta-regressions. RESULTS: We included 16 RCTs (421 adults; mean age = 37.7 years), with 11 RCTs being meta-analyzed. Compared to non-manual physiotherapy (i.e. exercise ± passive modalities; 10 RCTs) or sham (1 RCT) interventions, SIJ manual therapy did not significantly reduce pain (SMD: -0.88; 95%-CI: -1.84; 0.08, p = 0.0686) yet had a statistically significant moderate effect in reducing disability (SMD: -0.67; 95% CI: -1.32; -0.03, p = 0.0418). The superiority of individual manual therapies was unclear due to low sample size, wide confidence intervals for effect estimates, and inability to meta-analyze five RCTs with a unique head-to-head design. RCTs were of 'good' (56%) or 'fair' (44%) quality, and heterogeneity was high. Certainty was very low for pain and low for disability outcomes. CONCLUSION: SIJ manual therapy appears efficacious for improving disability in adults with SIJPS, while its efficacy for pain is uncertain. It is unclear which specific manual therapy techniques may be more efficacious. These findings should be interpreted cautiously until further high-quality RCTs are available examining manual therapy against control groups such as exercise. REGISTRATION: PROSPERO (CRD42023394326).

The impact of patient scoliosis-specific exercises for adolescent idiopathic scoliosis: a systematic review and meta-analysis of randomized controlled trials with subgroup analysis using observational studies.

PURPOSE: Adolescent idiopathic scoliosis (AIS) is a common pediatric spinal deformity frequently treated with patient scoliosis-specific exercises (PSSE). The purpose of this study is to perform a systematic review and meta-analysis of randomized controlled trials and sensitivity analysis of observational studies to determine the impact of PSSE on outcomes for AIS. METHODS: A systematic review and meta-analysis on impact of PSSE for patients with AIS was performed. Databases used included PubMed, CINAHL, MEDLINE, Cochrane, and ScienceDirect database inception to October 2022. Inclusion criteria included use of PSSE, patient population of AIS, and full text. RESULTS: A total of 26 articles out of 628 initial retrieved met final inclusion criteria (10 randomized controlled trials (RCTs), 16 observational studies). Total included patients (n = 2083) had a frequency weighted mean age of 13.2 ± 0.9 years and a frequency weighted mean follow-up of 14.5 ± 20.0 months. Based on only data from RCTs with direct comparison groups (n = 7 articles), there was a statistically significant but clinically insignificant improvement in Cobb angle of 2.5 degrees in the PSSE group (n = 152) as compared to the control group (n = 148; p = 0.017). There was no statistically significant improvement in Cobb angle when stratified by small curve (< 30 degrees) or large curve (> 30 degrees) with PSSE (p = 0.140 and p = 0.142, respectively). There was no statistically significant improvement in ATR (p = 0.326) or SRS-22 score (p = 0.370). CONCLUSION: PSSE may not provide any clinically significant improvements in Cobb angle, ATR, or SRS-22 scores in patients with AIS. PSSE did not significantly improve Cobb angle when stratified by curve size. LEVEL OF EVIDENCE: Level I.

Tibial Spine Fractures in the Child and Adolescent Athlete: A Systematic Review and Meta-analysis.

BACKGROUND: Tibial spine fractures (TSFs) are uncommon injuries that may result in substantial morbidity in children. A variety of open and arthroscopic techniques are used to treat these fractures, but no single standardized operative method has been identified. PURPOSE: To systematically review the literature on pediatric TSFs to determine the current treatment approaches, outcomes, and complications. STUDY DESIGN: Meta-analysis; Level of evidence, 4. METHODS: A systematic review of the literature was performed in accordance with the PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analyses) guidelines using PubMed, Embase, and Cochrane databases. Studies evaluating treatment and outcomes of patients <18 years old were included. Patient demographic characteristics, fracture characteristics, treatments, and outcomes were abstracted. Descriptive statistics were used to summarize categorical and quantitative variables, and a meta-analytic technique was used to compare observational studies with sufficient data. RESULTS: A total of 47 studies were included, totaling 1922 TSFs in patients (66.4% male) with a mean age of 12 years (range, 3-18 years). The operative approach was open reduction and internal fixation in 291 cases and arthroscopic reduction and internal fixation in 1236 cases; screw fixation was used in 411 cases and suture fixation, in 586 cases. A total of 13 nonunions were reported, occurring most frequently in Meyers and McKeever type III fractures (n = 6) and in fractures that were treated nonoperatively (n = 10). Arthrofibrosis rates were reported in 33 studies (n = 1700), and arthrofibrosis was present in 190 patients (11.2%). Range of motion loss occurred significantly more frequently in patients with type III and IV fractures (P < .001), and secondary anterior cruciate ligament (ACL) injury occurred most frequently in patients with type I and II fractures (P = .008). No statistically significant differences were found with regard to rates of nonunion, arthrofibrosis, range of motion loss, laxity, or secondary ACL injury between fixation methods (screw vs suture). CONCLUSION: Despite variation in TSF treatment, good overall outcomes have been reported with low complication rates in both open and arthroscopic treatment and with both screw and suture fixation. Arthrofibrosis remains a concern after surgical treatment for TSF, but no significant difference in incidence was found between the analysis groups. Larger studies are necessary to compare outcomes and form a consensus on how to treat and manage patients with TSFs.

Has Sustained Time Away From Sports Due to the COVID-19 Pandemic Led to Increased Sport-Related Soft Tissue Injuries?

BACKGROUND: A decrease in sport-related injuries was observed in 2020, which has been attributed to COVID-19 and recommendations to suspend organized sports. In adult populations, increased injury rates have been noted in athletes returning to play after an extended period of reduced play, attributable to deconditioning. There is growing literature surrounding concern over increased injury risk after return to sport after the COVID-19 shutdowns. HYPOTHESIS: Like adults, pediatric patients experience an increase in sport-related injuries after periods of "deconditioning," such as during the COVID-19 shutdown. STUDY DESIGN: Descriptive epidemiology study. LEVEL OF EVIDENCE: Level 4. METHODS: The Consumer Product Safety Commission's National Electronic Injury Surveillance System database was queried to identify 13- to 18-year-old patients who sustained a sprain/strain type injury in 2019 or 2021 to an extremity, and involved sporting equipment for basketball, baseball/softball, soccer, and football. The control group was established as patients who sustained injury in 2019, and the post-COVID-19 group was established as those in 2021. Quantity of injuries sustained in these 2 groups were compared and analyzed by subgroup. RESULTS: There was a significant difference in the total number of sport-related sprains/strains in 2019 versus 2021 (P = 0.01), with more injuries in 2019 (n = 151,067) than in 2021 (n = 104,041). There were more injuries in boys than in girls. Proportion of injuries by sports were similar in both time periods. There was a significant decrease in basketball-related injuries by 21% (P ≤ 0.01, relative risk ratio [rrr] = 0.7979) and a significant increase in football-related injuries by 14% (P = 0.01, rrr = 1.1404) and in soccer injuries by 14.2% (P = 0.03, rrr = 1.1422). CONCLUSION: There is significant heterogeneity in injury rates by sports, with no conclusive increase in injuries, contrary to expectations. CLINICAL RELEVANCE: This study suggests that the relationship between deconditioning and injury may be less clear in the child-athlete, and gives recommendations for return to sport after extended breaks. STRENGTH-OF-RECOMMENDATION TAXONOMY (SORT): Level 2c.

Rotator cuff injury in the pediatric population: a systematic review of patient characteristics, treatment, and outcomes.

Rotator cuff injuries (RCIs), traditionally thought to be an adult-type pathology, have been reported in the pediatric population, but there remains limited evidence regarding this injury pattern in pediatric patients. The purpose of this study was to systematically review the literature to characterize the epidemiology, injury patterns, treatment modalities, and outcomes for pediatric patients with RCIs. A systematic review was performed in accordance with Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines, reviewing Pubmed, Embase, Cochrane, and CINAHL databases. Studies reporting imaging confirmed RCIs, and treatment outcomes in patients less than 18 years of age were included. Patient demographics, mechanism, injury type, and injury location were recorded. Treatment type and patient outcomes were abstracted when available and summarized with descriptive statistics. Our search identified 28 studies published from 1994 to 2020, which included 215 total tendons injured in 185 patients. Twenty-six studies were classified as level IV evidence, whereas only two were level III. When described, the most injured tendon ( n = 184) was the supraspinatus, whereas the most described injury type ( n = 215) was a partial tear. Surgical intervention was pursued in 75.8% of injuries, with arthroscopy being more common than open repair (79.4% vs. 20.6%). Nonoperative treatment was primarily utilized for partial tears. Among the 24 studies reporting on return to sports, nonoperatively managed patients returned later than those treated operatively (mean: 10.7 vs. 7 months). Only eight studies included patient reported outcome measures (PROMs), and just five had pre- and posttreatment scores. Three complications were noted, all in operative patients. RCIs in pediatric patients have been reported in the literature with increasing frequency over the last decade, but the quality of evidence remains poor with inconsistent injury descriptions and outcome reporting. Excellent results were seen for all injury types and locations with both operative and nonoperative treatments. The literature for pediatric RCIs remains limited in guiding management decisions indicating a need for more high-quality studies to compare outcomes across injury and treatment type. Level of evidence: level III.

Traumatic hip dislocations in a pediatric cohort: The importance of advanced imaging.

Purpose: Given that pediatric traumatic hip dislocations are relatively rare, the purpose of the current study is twofold: first, to contribute a significant cohort to the existing corpus, and second, to provide evidence toward the role that computed tomography and magnetic resonance imaging could play in identification and management of this type of injury. Methods: A retrospective review was conducted of all patients with traumatic hip dislocation who presented from 2012 to 2022 at a tertiary-level pediatric trauma center. Data regarding demographics, mechanism of injury, imaging, and treatment were tabulated. Outcomes of interest included immobilization length, concomitant injuries, imaging performed and findings, and rates of avascular necrosis, pain, and stiffness. Concomitant injuries were identified using imaging, clinical, and operative notes. Differences between categorical variables were compared using chi-square analysis or Fischer-exact testing, while continuous variables were compared using Student t tests or Wilcoxon rank sum tests when appropriate. Results: Thirty-four patients were identified. Postreduction, 28 patients had a cumulative 17 magnetic resonance imaging, 19 computed tomographies, and 1 intraoperative arthrogram. Of these, 16 patients had 19 injuries identified on advanced imaging that were missed on initial radiographs. Eleven of these patients went on to operative treatment. In eight of these, postreduction advanced imaging helped guide the decision for surgery. In four patients, magnetic resonance imaging was necessary to fully characterize injury to the posterior acetabular rim after initial identification on computed tomography. Magnetic resonance imaging was also used to rule out one computed tomography-diagnosed acetabular fracture. Conclusion: Magnetic resonance imaging is valuable to fully define associated rim and intra-articular injuries following initial treatment of pediatric traumatic hip dislocations. Level of evidence: Level IV diagnostic study.

Natural history of neonatal radial nerve palsy.

LEVEL OF EVIDENCE: IV.

Stationary bike injuries prompting emergency department presentation in pediatric patients: an epidemiological study.

OBJECTIVES: Potential harms of stationary bike injuries in pediatric patients have been highlighted in the literature, but prior work is limited to case series and without population-level analysis. The purpose of this study is to examine the epidemiology of pediatric stationary bike injuries occurring in the US over the last decade using a national database. METHODS: Injuries resulting from stationary bike use in pediatric patients from 2012 to 2021 were identified using coding from the National Electronic Injury Surveillance System (NEISS) database. Patient demographics, injury characteristics, and case narratives were examined. National annual estimates of injury frequency/incidence were calculated using weighting and survey package in R. Univariate analyses were used to compare injuries among groups. RESULTS: We identified 525 stationary bike injuries representing an estimated total of 15,509 injuries in the population. Pediatric patients sustained an average of 1,551 injuries annually, with an estimated yearly increase of 288 injuries (p < 0.01) after 2019. While males sustained more injuries, there were age-dependent differences in frequency of injuries between sexes (p < 0.01). The upper extremity was the most commonly injured body region overall, but children 5 and under sustained more injuries to the head/neck. The most common overall injury type was lacerations, while fractures predominated in the 6 to 11-year-old age group. Fifty-six percent of injuries were sustained not while riding the bike, most notably among children under 12. CONCLUSION: Our findings indicate that the impact of stationary bike injury in the pediatric population is not insignificant, and most injuries are related to improper play rather than traditional exercise use. Gender and age-related patterns differed in regard to the type and mechanism of injury sustained. Children 5 and under sustain a disproportionate amount of injuries to the head, neck, and upper extremity. As stationary bikes grow in popularity, preventative measures should be considered to reduce injuries to young children.

The McKenzie Method Is an Effective Rehabilitation Paradigm for Treating Adults With Moderate-to-Severe Neck Pain: A Systematic Review With Meta-Analysis.

Neck pain is a common musculoskeletal condition frequently managed with numerous conservative interventions. The McKenzie method of mechanical diagnosis and therapy (MMDT) is a form of physical therapy evaluation and treatment that aims to improve pain and disability in patients with musculoskeletal pain, including neck pain. To date, no systematic review with meta-analysis has examined the use of the McKenzie MMDT for neck pain. This study aimed to examine the effectiveness of the McKenzie MMDT in adult patients with neck pain. A systematic review and meta-analysis were performed using PubMed, ScienceDirect, MEDLINE, CINAHL, Web of Science, and Google Scholar. Full search terms were "McKenzie method" OR "McKenzie approach" OR "McKenzie treatment" AND "neck pain." Inclusion criteria were the use of the McKenzie MMDT, level I randomized control trials (RCTs), adults, and outcomes of pain (0-10 scale) and disability (neck disability index). A total of 11 RCTs met the final selection criteria from 1,955 articles on initial search with 289 patients receiving the McKenzie MMDT out of 677 total patients. For meta-analysis, there was a clinically insignificant but statistically significant improvement in pain (1.14/10 points) in patients receiving the McKenzie MMDT versus control interventions (p<0.02). There was no significant improvement in the neck disability index score between the McKenzie MMDT versus control interventions (p=0.19). For severity of pain, there was a clinically and statistically significant improvement in moderate or severe pain (2.06/10 points; p<0.01), but not in mild-to-moderate pain (p=0.84) when comparing the McKenzie MMDT to control interventions. Overall, the McKenzie MMDT provides very small but statistically significant improvements in neck pain of all severity compared to control interventions. However, the McKenzie MMDT does provide clinically and statistically significant pain improvement in moderate-to-severe neck pain. Use of the McKenzie MMDT did not provide any significant improvement in disability compared to control interventions. This study is the first systematic review with meta-analysis on the effectiveness of the McKenzie MMDT for adult patients with neck pain.

Radiographic Evaluation of Pediatric Patients with Patellofemoral Instability.

PURPOSE OF REVIEW: The purpose of this review is to highlight the radiographic assessments of utility in the evaluation of a pediatric patient with patellofemoral instability to facilitate a thorough work-up. Understanding of these measures is useful in understanding evolving research in this field, providing accurate patient risk assessment, and appropriately directing surgical decision-making. RECENT FINDINGS: Recent literature has broadened the radiographic characterization of the pediatric patellar instability and its anatomic risk factors. Knee MRI can inform the assessment of skeletal maturity and novel axial alignment measurements may enhance our identification of patients at increased risk of recurrent instability. Additional improvements have been made in the objective measurement and classification of trochlear dysplasia. Knee MRI-based skeletal age assessments may obviate the need for hand bone age assessments in growing children with patellofemoral instability. Novel objective measures exist in the evaluation of pediatric patellar instability both in the assessment of axial alignment and trochlear dysplasia. Future work should focus on how these measures can aid in guiding surgical decision-making.