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Crus (leg) muscles

Other Terms: Leg


Like the muscles of the thigh, the muscles of the crus rotate during development to new positions in the post-natal leg. Also like the muscles of the thigh, the crural muscles form three compartments from the two original embryonic compartments. The embryonic dorsal musculature forms two distinct compartments in the post-natal leg – the anterior and lateral compartments, with four and two muscles respectively. The embryonic ventral muscle becomes the large posterior compartment of the post-natal crus with its three superficial muscles and four deep muscles. The muscles within each compartment share actions, blood supply, and innervation in common.


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