BACKGROUND The Hip and Knee Registry is an observational database comprising data on practices of US orthopedic surgeons during 1996 to 2001. We examined trends in the use of prophylaxis for venous thromboembolism (VTE) among patients who underwent primary total hip arthroplasty (THA) or total knee arthroplasty (TKA). METHODS Data on 9,327 THA and 13,846 TKA patients were submitted between 19...

Abstract Background Patellofemoral complications are one of the major issues after total knee arthroplasty (TKA). Excessive patellofemoral joint pressure is associated with TKA surgery, and amount patellar osteotomy has a direct effect on pressure. The purpose this study was to evaluate influence patella thickness in TKA. Methods Five freshly frozen cadavers were operated custom-made Stryker po...

BackgroundTotal knee arthroplasty (TKA) is a successful treatment for patients with late stage osteoarthritis, yet arthrofibrosis remains consistent cause of TKA failure. Dupuytren’s, Ledderhose and Peyronie’s Diseases are related conditions increased fibroblast proliferation. The aim this study was to identify whether an association exists between these following TKA.MethodsPatient records wer...

Introduction: Total knee arthroplasty (TKA) has been shown to significantly improve gait dynamics for individuals suffering from severe osteoarthritis(1). However, previous research has limited gait analysis for TKA patients to level surfaces. Gait analysis among young, healthy individuals has shown that lower limb mechanics change as individuals move from level to inclined walking surfaces, wi...

BACKGROUND Previous studies suggested that pre-operative comorbidity was a risk factor for worse outcomes after TKA. To our knowledge, studies have not examined whether postoperative changes in comorbidity impact pain and function outcomes longitudinally. Our objective was to examine if increasing comorbidity postoperatively is associated with worsening physical function and pain after primary ...

Background: Heterotopic Ossification (HO) of the knee is most commonly formed anteriorly to distal femoral shaft in quadriceps expansion. Although incidence severe HO with large dimensions affecting and resulting consequences extremely rare, these cases are difficult prevent have clinical limitations for patient. Aim: The purpose this study was present explore formation after Total Knee Arthrop...

This article presents clinical and radiological outcome analysis of navigated total knee arthroplasty (TKA) following osteotomy compared with primary navigated TKA implantation. The study group (29 legs) received navigated TKA (Columbus with deep-dish, cruciate-retaining inlay, Aesculap AG, Tuttlingen, Germany) following distal femoral (6 legs) or high tibial (23 legs) osteotomy, and the contro...

BACKGROUND Simulations show that paradoxical anterior femoral slide in conventional dual radius total knee arthroplasty (TKA) is initiated by sudden reduction of the femoral radius from distal to posterior. Therefore, we hypothesized that a new TKA prosthesis design with a gradually reducing femoral radius may minimize the anterior slide in navigation-based in vivo knee kinematics. The purpose ...

The beneficial effects of dexmedetomidine (DEX) have not been extensively investigated in elderly patients receiving spinal anesthesia. This study evaluated the effects of intravenous DEX infusion on stress and hemodynamic response, as well as on postoperative analgesia in elderly patients undergoing total knee arthroplasty (TKA). We randomly allocated 45 adult patients to 3 patient groups (n=1...

We hypothesized changes in rotations and translations after TKA with a fixed-bearing anterior cruciate ligament (ACL)-sacrificing but posterior cruciate ligament (PCL)-retaining design with equal-sized, circular femoral condyles would reflect the changes of articular geometry. Using 8 cadaveric knees, we compared the kinematics of normal knees and TKA in a standardized navigated position with d...