BACKGROUND Arthrofibrosis in the suprapatellar pouch and anterior interval can develop after knee injury or surgery, resulting in anterior knee pain. These adhesions have not been biomechanically characterized. METHODS The biomechanical effects of adhesions in the suprapatellar pouch and anterior interval during simulated quadriceps muscle contraction from 0 to 90° of knee flexion were assess...

Patellofemoral pain (PFP) is common, especially in women who are physically active. The diagnosis can be challenging, as the etiology of PFP is complex and is unclear. The purpose of this paper is to discuss the current etiological understandings both microscopically and macroscopically and provide an overview for the evaluation and treatment. It is essential to approach each patient presenting...

PURPOSE Increasing step rate has been shown to elicit changes in joint kinematics and kinetics during running, and it has been suggested as a possible rehabilitation strategy for runners with patellofemoral pain. The purpose of this study was to determine how altering step rate affects internal muscle forces and patellofemoral joint loads, and then to determine what kinematic and kinetic factor...

STUDY DESIGN Controlled laboratory study using a cross-sectional design. OBJECTIVES To compare patellofemoral joint kinematics, femoral rotation, and patella rotation between females with patellofemoral pain (PFP) and pain-free controls using weight-bearing kinematic magnetic resonance imaging. BACKGROUND Recently, it has been recognized that patellofemoral malalignment may be the result of...

OBJECTIVE To compare the effects of taping techniques on clinical measures in patellofemoral pain syndrome (PFPS) patients. DESIGN Crossover experimental design. SETTING Controlled laboratory. PARTICIPANTS Twenty physically active PFPS patients. MAIN OUTCOME MEASURES Isokinetic strength and endurance, and perceived pain. RESULTS Bilateral baseline differences existed for strength (inv...

OBJECTIVE To assess internal and external responsiveness of the Activity of Daily Living Scale of the Knee Outcome Survey and Numeric Pain Rating Scale on patients with patellofemoral pain. DESIGN One group pre-post design. SUBJECTS A total of 60 individuals with patellofemoral pain (33 women; mean age 29.9 (standard deviation 9.6) years). METHODS The Activity of Daily Living Scale and th...

BACKGROUND/AIM The role of hip muscles in the rehabilitation of patellofemoral pain syndrome has recently received interest. The aim of this study was to compare the efficiencies of hip exercises alongside knee exercises versus only knee exercises on pain, function, and isokinetic muscle strength in patients with this syndrome. MATERIALS AND METHODS Fifty-five young female patients (mean age:...

Patellofemoral pain (PFP) is one of the most common disorders of the knee, accounting for 25% of all knees injuries seen in a sports medicine clinic. The cause of PFP, however, is not clearly understood and may consist of multiple origins. The most commonly accepted hypothesis is related to increased patellofemoral joint stress (force per unit area) and subsequent articular cartilage wear. Athl...

BACKGROUND Patellofemoral pain syndrome is a highly prevalent musculoskeletal overuse condition that has a significant impact on participation in daily and physical activities. A recent systematic review highlighted the lack of high quality evidence from randomised controlled trials for the conservative management of patellofemoral pain syndrome. Although foot orthoses are a commonly used inter...