Alterations in in vivo Knee Joint Kinematics Following a Femoral Nerve Branch Block of the Vastus Medialis: Implications for Patellofemoral Pain Syndrome

摘要

BackgroundA potential source of patellofemoral pain, one of the most common problems of the knee, is believed to be altered patellofemoral kinematics due to a force imbalance around the knee. Although no definitive etiology for this imbalance has been found, a weak vastus medialis is considered a primary factor. Therefore, this study’s purpose was to determine how the loss of vastus medialis obliquus force alters three-dimensional in vivo knee joint kinematics during a volitional extension task.