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Fig. 1. Lateral views of the iliotibialis lateralis postacetabularis (A) and, with
the iliolotibialis reflected (B), the femorotibilialis. The iliotibialis
lateralis postacetabularis acts as a knee and hip extensor. The femorotibialis
has a broad origin on the femur and is a knee extensor. Approximate location
of sonomicrometer crystals are indicated.