Musculoskeletal: Lower Extremity: Subtalar Joint: Osteokinematics and Arthrokinematics

Question 1

Subtalar Joint
Osteokinematic: Inversion
Calcaneus and Cuboid

Answer 1

• Arthrokinematics of the subtalar joint at the calcaneus and cuboid during inversion in the open kinetic chain.
• In the open kinetic chain the Convex calcaneus and cuboid will roll MEDIALLY and glide LATERALLY on the concave talus.
• Arthrokinematics of the subtalar joint at the calcaneus and cuboid during inversion in the closed kinetic chain.
• In the closed kinetic chain the concave talus will roll and glide MEDIALLY on the convex calcaneus and cuboid.

Question 2

Subtalar Joint
Osteokinematic: Eversion
Calcaneus and Cuboid

Answer 2

• Arthrokinematics of the subtalar joint at the calcaneus and cuboid during eversion in the open kinetic chain.
• In the open kinetic chain the Convex calcaneus and cuboid will roll LATERALLY and glide MEDIALLY on the concave talus.
• Arthrokinematics of the subtalar joint at the calcaneus and cuboid during eversion in the closed kinetic chain.
• In the closed kinetic chain the concave talus will roll and glide LATERALLY on the convex calcaneus and cuboid.

Question 3

Subtalar Joint
Osteokinematic: Inversion
Navicular and Cuneiforms

Answer 3

• Arthrokinematics of the subtalar joint at the navicular and cuneiform during inversion in the open kinetic chain.
• In the open kinetic chain the concave navicular and cuneiform will roll and glide MEDIALLY on the convex talus
• Arthrokinematics of the subtalar joint at the navicular and cuneiform during inversion in the closed kinetic chain.
• In the closed kinetic chain the convex talus will roll MEDIALLY and glide LATERALLY on the concave navicular and cuneiforms.

Question 4

Subtalar Joint
Osteokinematic: Eversion
Navicular and Cuneiforms

Answer 4

• Arthrokinematics of the subtalar joint at the navicular and cuneiform during eversion in the open kinetic chain.
• In the open kinetic chain the concave navicular and cuneiform will roll and glide LATERALLY on the convex talus
• Arthrokinematics of the subtalar joint at the navicular and cuneiform during eversion in the closed kinetic chain.
• In the closed kinetic chain the convex talus will roll LATERALLY and glide MEDIALLY on the concave navicular and cuneiforms.