What is the close-packed position for the subtalar joint? Which motion of the tibia will lock the subtalar joint?
What will be an ideal response?
ANS:
The close-packed position for the subtalar joint is supination. In this position, the ligamentum cervicis becomes taut, drawing the talus and calcaneus together. In weight-bearing, a lateral rotatory force on the leg will bring the talus laterally as well, carrying the subtalar joint into supination and locking it.
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