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Orthotics
Foot
Question | Answer |
---|---|
functions of the foot | dynamic base of support, transfers leg rotation to the fixed foot termed talocrural coupling, assist the LE in attenuating impact forces during early stance as pronation occurs, provide a stable rigid base during terminal stance during supination |
talocrural joint | mortise and trochlear of talus |
talocrural joint ligaments | lateral is ant and post talofibular calcaneotalofibular, medial-deltoid |
subtalar joint | concave posterior surface of the talus and convex posterior surace of the calcaneus |
subtalar ligs | interosseous talocalcaneal and cervical |
midtarsal | talocalcaneonavicular and calcaneocuboid |
intetarsal | cuneonavicular, cuboidnavicular, and intercuneiform |
midtarsal and intertarsal ligaments | long plantar, short plantar, calcaneonavicular or spring, and plantar fascia |
open chain pronation | df, abd, ev |
open chain supination | pf, add, in |
triplanar movement is in 4 joints | 1st and 5th rays, talocrural, subtalar, midtarsal |
closed chain pronation | ev, add, pf |
closed chain supination | in, abd, df |