Table 1 Hip-muscle strength testing protocol
Action | Participant position | Dynamometer placement | Moment arm |
|---|---|---|---|
Abduction | Supine. Participant holds onto the side of the plinth to stabilise | 5 cm proximal to the lateral malleolus | Greater trochanter to 5 cm proximal to lateral malleolus |
Adduction | Supine. Contralateral hip and knee flexed, with foot placed flat on the plinth. Participant holds onto the side of the plinth to stabilise | 5 cm proximal to the medial malleolus | Greater trochanter to 5 cm proximal to medial malleolus, measured along the lateral surface of the lower limb. |
Internal rotation | Sitting over the edge of the plinth. Arms folded across chest | 5 cm proximal to the lateral malleolus | Lateral knee joint line to 5 cm proximal lateral malleolus |
External rotation | Sitting over the edge of the plinth. Arms folded across chest | 5 cm proximal to the medial malleolus | Medial knee joint line to 5 cm proximal medial malleolus, measured along the lateral surface of the lower limb |
Hip flexion | Sitting over the edge of the plinth. Arms folded across chest | 5 cm proximal to the proximal border of the patella | Greater trochanter to 5 cm proximal to proximal border of patella, measured along the lateral surface of the lower limb |
Hip extension | Prone. Testing knee flexed to 90° | Calcaneus | Greater trochanter to Lateral joint line |