The results of this study revealed that more than 10° of external rotation deformity could cause a detoriation in the patellofemoral scores. Anatomic reduction of the fracture site should be performed as soon as possible and external rotational deformities should especially be avoided in order to prevent patellofemoral malalignment.

Purpose Whether ultra-congruent (UC) or posterior cruciate ligament-stabilized (PS) inserts should be used in posterior cruciate ligament (PCL)-sacriicing 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 PCLsacriicing TKA. Methods Sixty-six patients diagnosed with primary knee osteoarthritis were randomly assigned to either the UC or the PS group. There were no signiicant diferences 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 signiicant diferences between the groups in terms of the preoperative KSS or isokinetic performance. Gradual improvement in the KSS was observed in both groups, but no signiicant diferences were detected between the groups during the whole follow-up period. The UC and PS groups exhibited similar peak extension and lexion torque values normalized to body weight at 3, 6 and 12 months postoperatively (p > 0.05). ConclusionThe use of UC or PS inserts in TKA did not afect the clinical outcomes or isokinetic performance.The clinical relevance of this study is that the potential diferences in clinical outcomes and isokinetic performance between UC and PS inserts do not need to be considered when sacriicing the PCL in TKA. Level of evidence I.

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.

IntroductionAlthough forearm fractures are one of the most common fractures in children, controversy remains about the optimal fixation technique in the surgical treatment of these fractures. The aim of this study was to compare the results of pediatric patients with a forearm double fracture who underwent open reduction and internal fixation (plate-screw group), elastic intramedullary nailing to both bones (ESIN), and hybrid fixation (the radius or ulna is fixed with the help of ESIN and the other forearm bone is fixed using plate-screw). MethodsA retrospective scan was made of the records of 51 patients with forearm double diaphyseal fractures (19 plate-screw, 18 ESIN, and 14 hybrid fixation). Comparisons were made in respect of the duration of surgery, length of the incision, duration of follow-up, time to union, functional results, and complication rates. ResultsThe study results showed that the surgical incision length and operating time in the hybrid group were statistically significantly shorter than in the plate-screw group (p<0.05). No statistically significant difference was determined between the three groups in respect of the functional results (p>0.05). ConclusionWhen the hybrid fixation technique was compared with other methods, the results were equal or better in terms of surgery time, incision length, time to union, and complications. Therefore, this technique can be used as an effective and reliable method in appropriate pediatric forearm diaphyseal double fractures.

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