BIO-17 Lecture Notes - Lecture 25: Extensor Hallucis Longus Muscle, Peroneus Longus, Posterior Tibial Artery
Document Summary
Tibialis anterior, extensor hallucis longus and brevis, extensor. Tibialis posterior, flexor digitorum, flexor hallucis longus, posterior. Peroneus longis and brevis, atf, cf ligaments, cuboid, 5th mt base. Tp, gastrocnemius, soleus, peroneus longus and brevis, fhl, fdl, tp. Supination combination of inversion, forefoot adduction and flexion. Pronation combination of eversion, forefoot abduction and extension. Ankle stability is increased in dorsiflexion, where the wide anterior talus fits into. Monitoring is best done with the thumbs adjacent the anterior tendons at the ankle joint. Mechanics: for dorsiflexion to occur, the talus must dorsiflex and glide posteriorly toward the ground at the barrier plantarflexed. Compare to opposite side restricted in posterior motion. : position hands as shown. Slide foot: an abnormal exam would be an asymmetric increased motion or lack. For talar dysfunction; can detect subtle loss of motion. The foot is kept parallel to the floor with the knee flexed.
