Joints of the Foot Flashcards
Foot
Longitudinal and Transverse Arches
Weight bearing capabilities and resilience
Distribute weight
Act as shock absorbers
Act as spring-boards
Transverse Arch of Foot
Supported by
Tendon of tibialis posterior (tarsal arch)
Tendon of peroneus longus (tarsal arch)
Adductor Hallucis muscle (metatarsal arch)
Deep transverse metatarsal ligament (anterior arch)
Longitudinal Arch of Foot
Bones of Lateral Arch
Calcaneus, Cuboid, Metatarsals 4 and 5
Lateral arch rests on the ground when standing
Longitudinal Arch
Bones of Medial Arch
Calcaneus, Talus, Navicular, 3 Cuneiforms, Metatarsals 1-3
Higher and more important than lateral arch
Longitudinal Arch
Dynamic Support
Intrinsic muscles of foot
Flexor Hallucis Longus
Flexor Digitorum Longus
Longitudinal Arch
Passive Support
1) Plantar calcnaeonavicular (spring) ligament
2) Short plantar ligament (calcaneocuboid)
3) Long plantar ligament
4) Plantar aponeurosis
Weight Distribution
Almost equally between Calcaneus and Heads of Metatarsals
Subtalar Joint
Talus
Calcaneus
Slightly concave posterior calcaneal articular surface
Convex posterior articular facet
Synovial joint
Ligaments of Subtalar Joint
Weak capsule supported by medial, lateral, interosseous and posterior talocalcaneal ligaments
Transverse (mid)tarsal joint
Ligaments of Midtarsal Joint
Joints of Inversion/Eversion
Joints of Inversion/Eversion
Movements
Subtalar Joint
Midtarsal Joint
Inversion/Eversion
Augments Inversion/Eversion
Tarsometatarsal Joint