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Table 2 Positions and sites of measurement of lower-limb muscles

From: Association between walking ability and trunk and lower-limb muscle atrophy in institutionalized elderly women: a longitudinal pilot study

Muscles Positions Measurement sites
Gluteus maximus Prone 30 % proximal between the posterior superior iliac spine and the greater trochanter
Gluteus medius Prone Midway between the proximal end of the iliac crest and the greater trochanter
Gluteus minimus Prone Midway between the proximal end of the iliac crest and the greater trochanter
Rectus femoris Supine Midway between the anterior superior iliac spine and the proximal end of the patella
Vastus lateralis Supine 3 cm lateral of 60 % distal between the anterior superior iliac spine and the proximal end of the patella
Vastus intermedius Supine Midway between the anterior superior iliac spine and the proximal end of the patella
Biceps femoris Prone Midway between the ischial tuberosity and the lateral condyle of the tibia
Gastrocnemius Prone Medial head of gastrocnemius at 30 % proximal between the lateral malleolus of the fibula and the lateral condyle of the tibia
Soleus Prone 30 % proximal between the lateral malleolus of the fibula and the lateral condyle of the tibia
Tibialis anterior Supine 30 % proximal between the lateral malleolus of the fibula and the lateral condyle of the tibia