Joint Position Sense in Individuals With Anterior Knee Pain

Introduction Anterior knee pain (AKP) commonly affects physically active as well as sedentary individuals and the aetiology remains unknown. Altered joint position sense (JPS) impacts accurate motor action and knee joint stability. It is unclear whether people with AKP have altered JPS. The aim of this study was to investigate the JPS of individuals with AKP. Methods A descriptive cross-sectional design was used to measure JPS in twenty-five participants with unilateral or bilateral AKP. The Vicon 3D motion analysis system was used to assess JPS by means of active joint position sense testing during single leg squat and active knee extension in sitting. Target angles were self-determined based on each participant's capabilities. The absolute error (AE) was used as the main outcome measure. Impaired JPS was classified as an AE equal to or greater than five degrees.