Musculoskeletal: Lower Extremity: Interphalangeal Joint: Osteokinematics and Arthrokinematics

Question 1

Interphalangeal Joint

Osteokinematic: Flexion

Answer 1

• Arthrokinematics of the toe joint during flexion in an open kinetic chain.
• In an open kinetic chain the concave distal phalanx will roll and glide PLANTARILY on the convex proximal phalanx.
• Arthrokinematics of the toe joint during flexion in a closed kinetic chain
• In a closed kinetic chain the convex proximal phalanx will roll PLANTARILY and glide DORSALLY on the concave distal phalanx.

Question 2

Interphalangeal Joint

Osteokinematic: Extension

Answer 2

• Arthrokinematics of the toe joint during extension in an open kinetic chain.
• In an open kinetic chain the concave distal phalanx will roll and glide DORSALLY on the convex proximal phalanx.
• Arthrokinematics of the toe joint during extension in a closed kinetic chain
• In a closed kinetic chain the convex proximal phalanx will roll DORSALLY and glide PLANTARILY on the concave distal phalanx.