Lower extremity mechanics of females with and without patellofemoral pain across activities with progressively greater task demands

摘要: Abstract Background Patellofemoral pain is commonly associated with lower extremity joint rotations that decrease retropatellar contact area and subsequently increase stress during weightbearing activities. People patellofemoral are thought to be capable of avoiding such harmful mechanics activities low external demands. However, this may not possible more demanding The purpose study was analyze in females without three different Specifically, we sought determine if differences between groups increasingly Methods 20 healthy female controls performed single leg squats, running, repetitive jumps as their three-dimensional were recorded. Transverse frontal plane hip knee kinematics compared for all Findings Differences the variables interest did generally depend on nature activity. group 4.3° greater rotation (P = 0.06), 3.5° adduction (P = 0.012), 3.9° decreased internal respect control (P = 0.01). Interpretation These results suggest do employ demand activity increases. Rather, seem demonstrate similar abnormal across a variety