In standing, when the subtalar joint is in supination, what is happening at the midtarsal joints and the forefoot?
a. The midtarsal joint axes converge, and the forefoot supinates at the tarsometatarsal joints.
b. The midtarsal joint axes become parallel, and the forefoot supinates at the tarsometatarsal joints.
c. The midtarsal joint axes converge, and the forefoot pronates at the tarsometatarsal joints.
d. The midtarsal joint axes become parallel, and the forefoot pronates at the tarsometatarsal joints.
ANS: C
The midtarsal joint converges with forefoot pronation during subtalar supination. During subtalar pronation, the midtarsal joint becomes divergent, and the forefoot supinates to maintain contact with the ground.
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