Anterior metaphyseal angle; much less individual variation in determining the posterior slope of the tibia.

BACKGROUND: The question of how to specify the posterior tilt of the tibia during arthroplasty operations remains unclear. The most current opinion is that a design whereby incisions are made in parallel with the individual pre-arthritic posterior tilt will yield better post-operational results. However, the wide range of inter-individual variations of posterior tilt of the tibia and the difficult task of identifying the shaft axis of the tibia through standard lateral radiographs are the main obstacles to this particular method. Therefore, there is a need for another reference line that can be measured with plain radiography and yields less inter-individual variation. The hypothesis of this study was that the angle formed between the anterior metaphyseal line of the proximal tibia and the tibial plateau would prove to be less variable across individuals. METHODS: Long-shot radiographs of non-rotating lateral tibias of 85 patients aged between 18 and 38 years were analysed. The angle forming between the anterior metaphyseal line of the proximal tibia and the slope of the tibial plateau, and the posterior slope angle was measured by 2 separate observers using the classical method. RESULTS: From the measurements of the posterior slope angle taken with the classical method, 38% (33/85) of the patients were within the ±2-degree range of the mean, and the anterior metaphyseal angle was within ±2 degrees of the mean in 75% (64/85) of the total patients. 44.23% variation (CoV) in posterior slop degrees, 2.73% (CoV) variation in the anterior metaphyseal angle measured by the same researchers. The difference between the percentages of variation was also found to be statistically significant. (z = 15.36, p = 0.000). CONCLUSION: The anterior metaphyseal angle can be utilized to predict the individual posterior slope. Nevertheless, further large-scale, multicentre studies are needed to establish a mean value for the population.

Patellar resurfacing in total knee arthroplasty leads to better isokinetic performance.

BACKGROUND: For decades there have been concerns about patellar resurfacing (PR) in total knee arthroplasty (TKA) and the individual preference of the surgeon is still the main determinant of whether or not resurfacing is applied. According to preference, surgeons can be categorized in 3 main groups of those who usually, selectively, or rarely resurface. The aim of this prospective, randomized, controlled study was to compare the isokinetic performance and clinical outcome of TKAs with PR and without PR. METHODS: A total of 50 patients scheduled to undergo TKA for primary osteoarthritis of the knee were randomly assigned to either the PR or non-PR groups. There were no significant differences between the groups in respect of age, BMI, gender and preoperative Knee Society Score (KSS) and isokinetic performance. Patients were evaluated at postoperative 3, 6, and 12 months with KSS and at 6 months and 1 year with isokinetic measurements. RESULTS: The PR group had a higher mean score, especially in the functional component of KSS, but the difference was not statistically significant. Knee extension peak torque was significantly higher in the PR group at 6 months (p = 0.029) and 1 year (p = 0.004) postoperatively. There were no significant differences between the groups in respect of knee flexion peak torque values following TKA. CONCLUSIONS: The results of this study demonstrated that PR during TKA is associated with better isokinetic performance and higher knee scores. These results support routine/usually resurfacing of the patella. For surgeons who selectively resurface the patella, the advantage of better isokinetic performance may be taking into consideration in favor of resurfacing the patella where they are undecided. LEVEL OF EVIDENCE: Level I, therapeutic study.

No differences in clinical outcomes or isokinetic performance between cruciate-substituting ultra-congruent and posterior stabilized total knee arthroplasties: a randomized controlled trial.

PURPOSE: Whether ultra-congruent (UC) or posterior cruciate ligament-stabilized (PS) inserts should be used in posterior cruciate ligament (PCL)-sacrificing total knee arthroplasty (TKA) remains debatable. Therefore, the aim of this prospective randomized controlled study was to compare the isokinetic performance and clinical outcomes of these inserts in PCL-sacrificing TKA. METHODS: Sixty-six patients diagnosed with primary knee osteoarthritis were randomly assigned to either the UC or the PS group. There were no significant differences between the groups in terms of age, body mass index or sex. The Knee Society score (KSS) and isokinetic performance results for each patient were recorded preoperatively and at 3, 6 and 12 months postoperatively. The physiatrist that performed the isokinetic tests and the patients were blinded to the study groups. RESULTS: There were no significant differences between the groups in terms of the preoperative KSS or isokinetic performance. Gradual improvement in the KSS was observed in both groups, but no significant differences were detected between the groups during the whole follow-up period. The UC and PS groups exhibited similar peak extension and flexion torque values normalized to body weight at 3, 6 and 12 months postoperatively (p > 0.05). CONCLUSION: The use of UC or PS inserts in TKA did not affect the clinical outcomes or isokinetic performance.The clinical relevance of this study is that the potential differences in clinical outcomes and isokinetic performance between UC and PS inserts do not need to be considered when sacrificing the PCL in TKA. LEVEL OF EVIDENCE: I.

Better life quality and sexual function in men and their female partners with short-segment posterior fixation in the treatment of thoracolumbar junction burst fractures.

PURPOSE: Thoracolumbar junction burst fractures remain a challenging problem due to controversy over the treatment choice of short- or long-segment posterior fixation. The aim of the present study was to compare life quality and sexual function of patients after short- and long-segment posterior fixations in the treatment of thoracolumbar junction burst fractures. METHODS: In this prospective, randomized study, 24 sexually active male patients diagnosed with thoracolumbar junction burst fractures were randomly assigned to either the short-segment posterior fixation (SSPF) group or the long-segment posterior fixation group (LLPF). The exclusion criteria were rheumatological disease and spinal surgery history. There were no significant differences in age, body mass index or smoking habits between the groups. The life quality score of EQ-5D and the International Index of erectile function (IIEF-5) score of male patients and the Female Sexual Function Index (FSFI) score of female partners were recorded preoperatively and 1 year after surgery. RESULTS: The mean age of patients in the SSPF and LSPF groups was 44.58 and 42.92 years, respectively. There were no statistically significant differences between the groups in the preoperative EQ-5D and IIEF-5 scores of male patients and the FSFI score of their partners. Postoperatively, the EQ-5D scores (p = 0.011) and IIEF-5 scores (p = 0.000) of male patients and the FSFI score of their partners (p = 0.001) were better in the short-segment group. CONCLUSIONS: Patients treated with SSPF have better sexual function and life quality with their partners compared to those treated with LSPF. The main clinical relevance of this study is that the impact of the choice of short or long-segment treatment on postoperative sexual function and life quality should be considered by surgeons when performing posterior fixation after thoracolumbar junction burst fractures.

Blood Loss and Transfusion Rates in the Revision of Unicompartmental Knee Arthroplasty to Total Knee Arthroplasty Are Similar to Those of Primary Total Knee Arthroplasty But Are Lower Compared With the Revision Total Knee Arthroplasty.

A total of 42 patients revised from unicompartmental knee arthroplasty (UKA) to total knee arthroplasty (TKA) were matched with 40 aseptic patients, including both component revision TKA and 88 primary TKA patients. The hemoglobin and hematocrit levels of each patient were screened preoperatively and postoperatively. There were no statistically significant differences in the postoperative hemoglobin or hematocrit levels, calculated blood loss, or blood transfusion rates between the revision UKA and primary TKA groups, whereas the hemoglobin (P = .010) and hematocrit (P = .015) levels were lower and the calculated blood loss (P = .034) and blood transfusion rates (P = .031) were higher in the revision TKA group. Revision of a failed UKA is more similar to primary TKA with respect to blood loss and transfusion rate.

Perioperative alendronate, risedronate, calcitonin and indomethacin treatment alters femoral stem fixation and periprosthetic bone mineral density in ovariectomized rats.

BACKGROUND: Many factors affect implant stability and periprosthetic bone mineral density (BMD) following total joint arthroplasty. We asked whether perioperative alendronate, risedronate, calcitonin and indomethacine administration altered (1) femoral stem shear strength and periprosthetic bone mineral density BMD in ovariectomized rats and (2) whether there were differences in the effect of these drugs. METHODS: Thirty overiectomized rats were divided into five groups and implanted with intramedullary mini-cortical screws in the femur. Four groups were treated with alendronate, risedronate, salmon calcitonin and indomethacin for 4 weeks preoperatively and 8 weeks postoperatively. RESULTS: Although alendronate and risedronate increased the periprosthetic BMD more than calcitonin, they did not alter implant fixation compared to calcitonin. Indomethacin significantly decreased the BMD around the stem and implant stability compared to all other groups. CONCLUSIONS: This study showed that perioperative treatment with bisphosphonates and calcitonin improved the BMD around the stems and implant stability. Although bisphosphonates increased the BMD more than calcitonin, there was no difference in implant stability. Indomethacin markedly decreased the periprosthetic BMD and implant stability. The main clinical significance of our study was the finding about the need to strictly avoid long-term use of high-dose nonsteroidal antiinflammatory drugs for patients who have major joint arthritis and a previous history of arthroplasty.

Isokinetic performance of hip muscles after revision total hip arthroplasty via previous anterolateral approach.

We investigated the isokinetic performance of hip muscles and clinical outcomes after revision total hip arthroplasty (THA) via same anterolateral approach used in primary surgery. Thirty patients who had undergone previous THA via an anterolateral approach underwent both acetabular and femoral component revision after aseptic loosening. The Harris Hip Score (HHS) was evaluated during a minimum 2-year follow-up. The isokinetic muscle strength of the operated and nonoperated hips was assessed 1 year after surgery. The HHS improved from 49.0 to 77.4. Operated and nonoperated hips exhibited similar isokinetic performance during all measurements (flexion, extension, and abduction) (p>0.05). This prospective study showed that the anterolateral approach preserves abductor strength after revision THA in aseptic cases with acceptable functional and clinical results. The main clinical relevance of this study is that the same anterolateral approach used in previous primary THA is also safe and viable for revision THA.

No difference in blood loss between posterior-cruciate-ligament-retaining and posterior-cruciate-ligament-stabilized total knee arthroplasties.

PURPOSE: Posterior-cruciate-ligament-retaining (PCR) and posterior-cruciate-ligament-stabilized (PS) arthroplasties are two major common practices in total knee arthroplasty (TKA). The hypothesis of the present study was that compared with the PCR technique, the PS technique is associated with a higher amount of postoperative blood loss and greater need for blood transfusion in cemented TKA. METHODS: In this prospective, randomized study, 100 patients diagnosed with primary knee osteoarthritis were randomly assigned to either the PCR group (Group I) or the PS group (Group II). The exclusion criteria were rheumatological joint disease, previous knee surgery, anticoagulant therapy and hypertension. There were no significant differences in age, body mass index and gender, between the groups. The haemoglobin and haematocrit levels of each patient were recorded preoperatively and on postoperative days 1, 3 and 5. The postoperative suction drainage and blood transfusion volumes were also recorded. RESULTS: There were no statistically significant differences in haemoglobin or haematocrit levels between the groups on postoperative days 1, 3 and 5. There were also no statistically significant differences in the total measured blood loss volume, postoperative drainage amounts or transfusion rates between the groups. CONCLUSION: Use of the PS technique during cemented TKA does not appear to influence the amount of perioperative blood loss or the need for postoperative blood transfusion in general. The clinical relevance of this study is that the difference in blood loss between the PCR and PS techniques does not need to be considered by surgeons when performing TKA.

Early versus delayed lower extremity amputations caused by firearm injury: A minimum 2-year follow-up.

BACKGROUND: High-energy casualties such as firearm injuries may result in extensive loss of soft tissue and bone in the lower extremities. Although the primary aim in these types of injuries is the preservation of the extremity, repeated surgical procedures for extremity salvage and subsequent restoration of function could have detrimental effects on the patient both physically and psychologically. The main aim of this study is to evaluate the physical and psychological outcomes of patients who underwent lower extremity amputation in the early period after a firearm injury compared with the results of patients who underwent amputation in the late period. We also evaluated the factors affecting the prognosis in patients undergoing late below-knee amputation (BKA). METHODS: This retrospective study included patients who underwent BKA following a lower extremity injury caused by firearms between March 2016 and March 2022. Patients who underwent emergency BKA at the first center they were taken to immediately after the injury constituted the early amputation (EA) group. Patients who were transferred to our tertiary-level referral center for continuation of treatment after the first intervention at another center and later underwent BKA constituted the late amputation (LA) group. The patients were evaluated regarding age, gender, amputation side, presence of phantom limb pain (PLP), and post-traumatic stress disorder (PTSD). RESULTS: Information was available from hospital records for a total of 35 patients; 16 in the EA group and 19 in the LA group. All patients were male. The mean age at the time of injury was 25.5±5.3 years (range, 20-45 years), and the mean follow-up period was 37±17 months (range, 25-84 months). In the comparison of PLP experienced, the difference between the groups was statistically significant, with PLP experienced by 1 (10%) patient in the EA group and by 9 (90%) in the LA group (p=0.010). PTSD was diagnosed in 3 (23%) patients in the EA group and 10 (77%) patients in the LA group (p=0.039). CONCLUSION: Patients who underwent late BKA were found to be affected by PLP and PTSD at a higher rate. When deciding on extremity-preserving surgery for patients with severe open injuries to the lower extremity, it is crucial to consider the poor outcomes associated with late BKA. Patients should be thoroughly informed about these negative outcomes.

Isokinetic performance and function are similar after total hip arthroplasty applied with a posterior or anterolateral approach: a randomised controlled trial.

BACKGROUND: There are ongoing debates on the effects of surgical approach on outcome after total hip arthroplasty (THA). It was hypothesised that with the anterolateral approach, trauma to the abductor arm can occur and related detrimental effects can diminish the postoperative outcomes. In this first randomised controlled trial in the literature on this subject, isokinetic performance and patient-reported functional outcomes were evaluated in patients undergoing THA with a posterior approach (PA) and an anterolateral approach (ALA). METHODS: A total of 48 patients scheduled to undergo THA were randomised to ALA or PA groups. The patients were evaluated preoperatively and at 6 and 12 months postoperatively, with flexion, extension and abduction strength measurements and the Harris Hip Score (HHS). The physiatrist performing isokinetic tests and the patients were blinded to the study groups. RESULTS: Both groups were similar in respect of age, body mass index (BMI), gender and preoperative isokinetic performance and HHS. Both groups demonstrated similar isokinetic performance (p < 0.05) and there was no difference in HHS (p < 0.05) at the 6- and 12-months follow-up evaluations. CONCLUSION: Although there is concern about potential abductor muscle damaging during ALA, the results of this randomised controlled study demonstrated that ALA can produce similar isokinetic performance and functional outcome to PA at 6 and 12 months, despite the close proximity to the abductor arm. TRIAL REGISTRATION NUMBER: ClinicalTrials.gov NCT04640740 (retrospectively registered).

Volar-locking plate versus external fixator in the management of distal radius fractures: An isokinetic study.

BACKGROUND: The aim of this study was to compare the clinical and isokinetic evaluation of distal radius fractures treated by volar locking plate (VLP) and external fixator. METHODS: The study included fifty patients with distal radius fracture type C1/C2/C3. Twenty-seven patients (12 men, 15 women; mean age 49.5±4.42) underwent open reduction and VLP fixation, and 23 patients (10 men, 13 women; 52.1±4.6) underwent closed reduction and external fixation. The follow-up period was at least 12 months and the mean following time was 13.5±1.02 (12-15) months. The functional parameters measured were range of motion (ROM) and grip strength. Radiographic parameters (radial incli-nation, palmar tilt, and radial height) and isokinetic evaluation were measured at the 6 months and at the final follow-up after surgery. The isokinetic test was done at the speed of 60º/s. The non-fractured arm was tested first and all results were also expressed as a percentage of that on the normal side. Wrist scores according to the disability of the arm, shoulder, and hand (DASH) questionnaire were used. RESULTS: The DASH scores, grip strength, and palmar flexion were better in VLP group at the 6 months (p<0.05). However, there were no differences between two groups at the one year (p=0.79). Isokinetic evaluation of the VLP showed that peak pronation torque and total pronation work were better than external fixation at the 6 month (p<0.05). At the final of follow-up was seen no significant differences between two groups (p=0.11). CONCLUSION: We looked at external fixation and locked volar plates in a prospective study and we found an improved range of movement and isokinetic evaluation outcome at 6 months after locked plating, but there were no differences between two groups at the final of follow-up. Our study showed no evidence for the superiority of one treatment over the other at the final follow-up.

The effect of tranexamic acid on hidden blood loss in total hip arthroplasty.

OBJECTIVES: In this study, we aimed to examine the effect of tranexamic acid (TXA) on hidden blood loss in total hip arthroplasty (THA) patients. PATIENTS AND METHODS: Between June 2015 and June 2021, a total of 120 patients (45 males, 75 females; mean age 57.2±4.9 years; range, 45 to 67 years) with primary osteoarthritis who underwent THA without the use of TXA and 53 patients who received TXA were retrospectively analyzed. Demographic data, amount of transfusion, early complications, preoperative and postoperative hemoglobin and hematocrit values, total blood loss, visible blood loss, and hidden blood loss values were compared. RESULTS: There was a significant difference between the groups with and without the use of TXA in terms of intraoperative bleeding, amount of blood in the drain, total blood loss, hidden blood loss, and blood transfusion (p<0.05). A significant positive correlation was found between intraoperative blood loss and hidden blood loss (r=0.325 p<0.01), while no significant correlation was found between postoperative drainage volume and hidden blood loss (r=-0.006 p=0.946). CONCLUSION: The use of TXA in patients undergoing THA reduces blood loss, including hidden blood loss, thereby reducing the need for blood transfusion after hip arthroplasty. However, there seems to be no linear relationship between postoperative blood loss and hidden blood loss. Considering these results, the routine use of TXA can be recommended in THA, unless there is a contraindication.

Radiation exposure during proximal femoral nailing: Traction table versus conventional table.

OBJECTIVES: The aim of this study was to compare radiation exposure of the patient during the closed reduction and proximal femoral nailing (PFN) of the trochanteric region fractures of the proximal femur using a traction table (TT) or a radiolucent table (RT) in the supine position. PATIENTS AND METHODS: Between June 2019 and December 2020, the study included 42 patients (19 males, 23 females; mean age: 81.2±9.5 years; range, 60 to 97 years) with trochanteric region fractures applied with closed reduction and PFN with the same implant type, 21 who underwent surgery on a TT (TT group), and 21 on a RT (RT group). The cumulative radiation dose was the primary outcome and was measured as the dose area product (DAP) in Gray cm2 (Gycm2 ). Intraoperative fluoroscopy times and amount of radiation exposure were compared between the two groups. RESULTS: There was no significant difference between the two groups in terms of sex, age, body mass index, fracture side, and the AO Foundation/Orthopaedic Trauma Association (AO/OTA) fracture classification (p>0.05). No statistically significant difference was found between the TT and RT groups in terms of the mean intraoperative fluoroscopy time (48.29±22.31 and 55.95±21.54 sec, respectively; p=0.264) and amount of radiation exposure (2.26±1.86 and 2.84±1.96 Gycm2 , respectively; p=0.332). CONCLUSION: Both TT and RT with the patient positioned supine provide similar results for closed reduction and PFN of trochanteric region fractures, in terms of DAP as the most reliable measurement method. The main clinical relevance of this study is that radiation exposure of the patient need not be considered while selecting the operating table.

Effect of patellar resurfacing surgery on bleeding in total knee arthroplasty.

OBJECTIVE: Postoperative bleeding is one of the most important factors affecting clinical and functional results in total knee arthroplasty. Therefore, many studies have been conducted on bleeding in arthroplasty patients. However, there are very few reports investigating the effect of patellar surface replacement on bleeding in knee arthroplasty. We, therefore, aimed to investigate the effect of patellar surface replacement on postoperative bleeding. METHODS: In this retrospective study, 30 with patellar resurfacing were compared with 39 without patellar resurfacing among patients who had undergone total knee replacement due to primary osteoarthritis. Demographic data, amount of transfusion, preoperative and postoperative hemoglobin and hematocrit values, and total, visible, and hidden blood loss values were recorded. RESULTS: No statistical difference was found between the two groups in terms of demographic values. There was no significant difference between the groups in terms of the amount of blood in the drain, total blood loss, hidden blood loss, and blood transfusion in patients who had and had not undergone patellar resurfacing. A positive significant correlation was found between postoperative drainage volume and total blood loss. CONCLUSION: Patellar component application in patients who had undergone total knee arthroplasty does not change the blood loss of the patients.

Total Infrapatellar Fat Pad Excision Leads to Worse Isokinetic Performance in Total Knee Arthroplasty: A Randomized Controlled Trial.

There are concerns that total infrapatellar fat pad (IPFP) excision in total knee arthroplasty (TKA) results in patellar tendon shortening due to ischemic contracture, but individual preference of the surgeon is still the main determinant between total or partial excision. The aim of this randomized controlled study was to compare isokinetic performance and clinical outcome of TKAs with total and partial excision of the IPFP. Seventy-two patients scheduled to undergo TKA for primary knee osteoarthritis by a single surgeon were randomly assigned to either total or partial excision group. Patients were evaluated preoperatively and at postoperative 1 year, with Knee Society Score (KSS) and isokinetic measurements. The physiatrist performing isokinetic tests and patients were blinded to the study. There were no significant differences between the groups in respect of age, body mass index, gender, and preoperative KSS and isokinetic performance. Postoperatively, both groups had improved KSS knee and KSS function scores, with no difference determined. Knee extension peak torque was significantly higher postoperatively in the partial excision group at postoperative 1 year (p = 0.036). However, there were no significant differences in knee flexion peak torque following TKA (p = 0.649). The results of this study demonstrated that total excision of the IPFP during TKA is associated with worse isokinetic performance, which is most likely due to changes in the knee biomechanics with the development of patella baja. Partial excision of the IPFP appears to be a valid alternative to overcome this potential detrimental effect without impeding exposure to the lateral compartment. This is a Level I, therapeutic study.

Unicompartmental knee arthroplasty results in a better gait pattern than total knee arthroplasty: Gait analysis with a smartphone application.

OBJECTIVES: The aim of this study was to compare the smartphone- based gait analysis data of patients who underwent total knee arthroplasty (TKA) and unicompartmental knee arthroplasty (UKA). PATIENTS AND METHODS: Between January 2016 and April 2019, a total of 51 patients (3 males, 48 females; mean age: 60.92 years; range, 51 to 70 years) who were operated with UKA or TKA in our clinic were retrospectively analyzed. The patients were divided into two groups according to the type of procedure as the UKA group (n=17) and unilateral TKA group (n=34). Gait analysis was made via a smartphone application (Gait Analyzer software version 0.9.95.0) with data acquired from the accelerometer of the smartphone. This analysis was performed using data collected from the Acceleration Sensor LSM6DSO into the Samsung Galaxy Note 10 Plus phone. Gait velocity, step time, step length, cadence, step time symmetry, step length symmetry, and vertical COM (vert-COM) parameters were measured. RESULTS: There were no statistically significant differences between the groups in respect of age, sex, body mass index, operated side, and follow-up duration. Compared to the TKA group, the UKA patients showed a better gait pattern in gait velocity (p=0.03), step time symmetry (p=0.005), and step length symmetry (p=0.024). No significant difference was detected in step time (p=0.807), step length (p=0.302), cadence (p=0.727) and vert-COM parameters (p=0.608). CONCLUSION: The gait of UKA patients is closer to the physiological pattern with a better gait velocity, step time symmetry, and step length symmetry than TKA patients. The surgical treatment option of UKA for knee medial compartment osteoarthritis leads to a better gait pattern than TKA.

EFFECT OF PLATELET-RICH PLASMA, FAT PAD AND DURAL MATRIX IN PREVENTING EPIDURAL FIBROSIS.

OBJECTIVE: Epidural fibrosis is one of the main reasons for requiring repeated surgical intervention. Our objective was to compare the effect of Platelet Rich Plasma (PRP) on the development of epidural fibrosis with collagen dural matrix and free autogenous fat graft. METHODS: Male rats were separated into 3 groups. Laminectomy was implemented on the rats and epidural fat pad was placed in the first group (n = 7); equal size of collagen dural matrix was applied in the second group (n = 7); a single dose of PRP was applied in the third group (n = 7). RESULTS: Epidural fibrosis was more common in the group that collagen dural matrix was applied when compared the ones that PRP was applied. PRP group presented better values in preventing epidural fibrosis when compared to the fat pad group, however this difference was not statistically significant. CONCLUSION: PRP is a material that can be easily obtained from the very blood of patients and at an extremely low cost; the main clinical relevance of our study is that the PRP might be an efficient material for better clinical results after laminectomy surgery due to its tissue healing and epidural fibroris preventing potentials. Level of Evidence V, Animal research.

OBJETIVO: A fibrose epidural é uma das principais razões que motiva intervenções cirúrgicas repetidas. O objetivo deste estudo foi comparar o efeito do plasma rico em plaquetas (PRP) no desenvolvimento de fibrose epidural com matriz de colágeno e enxerto de gordura autógena. MÉTODOS: Ratos machos foram separados em 3 grupos. A laminectomia foi aplicada nos ratos e gordura epidural foi colocada no primeiro grupo (n = 7); matriz de colágeno de tamanho igual foi aplicada no segundo grupo (n = 7); uma dose única de PRP foi aplicada no terceiro grupo (n = 7). RESULTADOS: A fibrose epidural foi mais comum no grupo em que a matriz de colágeno foi aplicada, quando comparada aos animais do grupo PRP. O grupo PRP apresentou os melhores valores na prevenção da fibrose epidural quando comparado ao grupo enxerto de gordura, porém a diferença não foi estatisticamente significante. CONCLUSÃO: PRP é um material de fácil obtenção do sangue dos pacientes e a baixo custo; a principal relevância clínica de nosso estudo é que o PRP pode ser um material eficiente para obter melhores resultados clínicos após a laminectomia devido à sua cicatrização tecidual e potencial de prevenção de fibrose epidural. Nível de evidência V, Pesquisa com animais.

Are metric parameters sufficient alone in evaluation of the patellar instability? New angular measuring parameters.

PURPOSES: When the evaluation of patellar instability is examined from the aspect of the conical-cylindrical anatomy of the tibia, metric measurement parameters such as the tuberositas tibia (TT)-trochlear groove (TG) and patellar tendon (PT) insertion-trochlear groove (TG) distances are not sufficient. We asked whether defined angular parameters reveal the rotational movement of the tuberositas tibia on the tibia shaft, additional to the metric parameters and there is a correlation between the metric and angular parameters. METHODS: 19 patients with patellar instability and 22 patients without patellar instability were evaluated. For all patients, two angle and three length parameters were evaluated on the slices taken. Evaluations were made of the TT-TG, the midpoint of the PT insertion-TG distances, the anatomic midpoint of the dome of the TT-TG, the TG-PT angle, and the TG-dome angle (DA). The Pearson correlation test was used for the statistical analysis of correlations between groups. RESULTS: A statistically significant increase was determined in the patellar instability group in the TG-DA and TG-PT angle values compared to the group without patellar instability ( p < 0.05). In both groups, a positive and strong correlation was determined between the TT-TG and the TG-PT and dome of the TT-TG distances, but no statistically significant correlation was determined between the tuberositas TT-TG and TG-PT angle and TG-DA. CONCLUSION: Metric parameters may not be sufficient alone in the evaluation of patellar instability. Metric parameters should be supported by additional angular parameters which reveal the rotational movement of the TT on the tibia shaft.

The impact of surgery for trochanteric femur fracture on sexuality in men and their female partners.

PURPOSE: This study was aimed to investigate the effects of trochanteric femur fracture treatment methods on erectile functions of the patients and on sexual functions with their female partners. MATERIALS AND METHODS: A total of 43 patients with trochanteric femur fracture who underwent proximal femoral nail (PFN) or proximal femur locking compression plate (PF-LCP) surgery were included in the study. The PFN implant was applied to group 1 ( n = 23) and the PF-LCP implant to group 2 ( n = 20). All the patients and their female partners completed the 5-item version of the International Index of Erectile Function (IIEF-5) and the Female Sexual Function Index (FSFI) preoperatively and at 1 year postoperatively after the rehabilitation period. RESULTS: The mean preoperative IIEF-5 and FSFI score was 21.910.9 and 21.911.1, 72.319.7 and 70.516.2 for the PFN and PF-LCP treatment groups, respectively, and at postoperative 1 year after rehabilitation, change in IIEF-5 score and FSFI score of each group was -6.512.1 versus -3.811.6, ( p < 0.001) and -16110.7 versus -6.314, ( p = 0.001), respectively. CONCLUSION: These data show that trochanteric femur fractures treated with PFN or PF-LCP had a negative impact on sexual function. PF-LCP had a greater negative effect than PFN on sexual function.