Final answer:
The close packed position of the talocrural joint is when the ankle joint is in maximum dorsiflexion, providing maximum stability with taut ligaments.
Step-by-step explanation:
The close packed position of the talocrural joint, which forms the ankle, is when the joint is in maximum dorsiflexion. In this position, the articulations between the talus bone of the foot and the medial malleolus of the tibia, the distal end of the tibia, and the lateral malleolus of the fibula are the most congruent and the ligaments are taut, providing maximum joint stability. This uniaxial joint primarily allows for dorsiflexion and plantar flexion of the foot. Additionally, movements at the subtalar joint and other intertarsal joints enable eversion and inversion movements of the foot. The ankle joint is supported and stabilized by ligaments that unite the medial or lateral malleolus with the talus and calcaneus bones, preventing excess eversion or inversion.