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...

BACKGROUND Anteromedialization is recommended for cartilage restoration of patellofemoral defects, with the presumption that it decreases contact pressures across the trochlea. No study has evaluated pressures on the trochlear side of the patellofemoral joint after anteromedialization of the tibial tubercle. HYPOTHESIS Anteromedialization of the tibial tubercle decreases contact pressure acro...

Many people suffer from knee pain due to abnormal function of the patellofemoral joint and are not able to enjoy normal activities of daily living. Surgical treatments are available and new methods are being developed by the medical industry. However, computational tools to efficiently evaluate the effects of the intervention on patellofemoral function are lacking. Therefore, a validated and ef...

PURPOSE The aim of this study was to investigate the pathoanatomic features of patellar instability by arthroscopically comparing patellofemoral congruence with rotation of the knee joint and/or electrical stimulation of the quadriceps (ESQ) between knees with and without patellar instability. METHODS We retrospectively examined 83 knee joints in 83 patients. The joints were classified into 2...

BACKGROUND Surgical treatment of patellofemoral instability can successfully diminish episodes of subluxation and dislocation, as well as symptoms of pain and instability. HYPOTHESIS Surgical treatment of lateral patellar instability in a strictly athletic population will facilitate return to sports. STUDY DESIGN Case series; Level of evidence, 4. METHODS From 1999 to 2004, 41 Fulkerson o...

BACKGROUND Kneeling following total knee arthroplasty can be a difficult task, impairing the activities of patients to varying degrees. Little is known about the biomechanical effects of kneeling following total knee replacement. The objective of this study was to quantify the effects of kneeling on patellofemoral joint contact areas and pressures, knee joint reaction force, and patellar kinema...