PURPOSE To evaluate the clinical and radiological results of total knee arthroplasty (TKA) using the anterior-posterior glide (APG) low contact stress (LCS) mobile-bearing system. MATERIALS AND METHODS We evaluated 130 knees in 117 patients who had undergone TKA with APG LCS mobile-bearing system between September 2005 and July 2007 and could be followed over 5 years. The mean follow-up perio...

INTRODUCTION Medial patellar subluxation is usually seen after lateral retinacular release. Spontaneous medial subluxation of the patella is a very rare condition. There are few reports in the literature on the pathophysiology of iatrogenic medial patellar subluxation. To our knowledge, there are no reports of the pathophysiology of non-iatrogenic medial patellar subluxation in the English lite...

There are many conditions that may be responsible of a painful knee prosthesis. The possible causes are not always easily diagnosed. Common causes of prosthetic failure, such as aseptic loosening, infection, instability, progressive patellar arthropathy and recurrent synovitis are associated with clearly defined radiographic and/or clinical evidence. Prosthetic infection should always be consid...

patellofemoral pain syndrome (pfps) is the most common overuse syndrome in athletes. it is one of the causes of anterior knee pain in athletic population who come to the sports medicine clinic. patellofemoral pain is more common among female athletes especially adolescents and young adults. symptoms include: persistent pain behind the patella or peripatella. pain increases on ascending and desc...

In spite of the low incidence of posterolateral instability of the knee, its recognition has become highly important, because lack of diagnosis leads to severe sequelae, mainly when associated with anterior and/or posterior cruciate ligament injuries, evolving to varus deformity, hyperextension, and failure of the primary ligament reconstructions of this joint in those cases where they are perf...

Patellar instability is a known but catastrophic complication after total knee arthroplasty (TKA). The occurrence of bilateral dislocation of the patella after TKA is exceedingly rare. It may present as anterior knee pain, and diagnosis can easily be made clinically or by plain radiographs. Early diagnosis with surgical realignment and repair of the extensor mechanism can provide good outcomes ...

An association between lateral patellar dislocation (LPD) and medial collateral ligament injury (MCL) has recently been demonstrated on MRI. The same valgus injury that disrupts the femoral MCL insertion can also cause a simultaneous MPFL tear at its femoral insertion, due to the close anatomical relationship of both ligamentous structures. Valgus laxity due to MCL-deficiency increases the Q-an...

Osteosarcoma of the proximal fibula is a rare entity that poses a surgical challenge. Limb salvage is the goal of treatment, and this entails sacrifice of the common peroneal nerve as well as the anterior tibial artery. Also the loss of the lateral collateral ligament and biceps attachment leads to unavoidable knee instability which requires special reconstructive procedures. From 2002 to 2008,...