Leg and Ankle.

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Presentation transcript:

Leg and Ankle

Fibula distal end (post.) Lateral malleolus Fibular/proneal groove (tendons) Malleolar fossa (ligaments)

Tibia distal end (post.) Medial malleolus Fibular notch (articulates with fibula) Malleolar groove (tendons)

Tibiofibular joints Post. Inf. tibiofibular ligament Synovial joint Post. Inf. tibiofibular ligament Ant. Inf. Tibiofibular ligament Fibrous joint

Articular surface: 3

Movements of the ankle Plantar Flexion Dorsi Flexion Inversion Eversion

Plantar Flexion/Dorsi Flexion

Inversion/Eversion

Tarsal bones Talus Calcaneus Navicular Cuboid Cuneiforms Latin = ankle-bone Latin calx = heel kuboides = cube-shaped Latin navicula = a little ship

Talus 2 1 2 Right 1

Talus 3 2 3

The ankle, or talocrural joint Needs ligaments!

Lateral ligament s of talocrural joint

Anterior drawer test to evaluate the anterior talofibular ligament.

Medial ligament s of talocrural joint

The ankle, or talocrural joint, is a hinge joint Plantar Flexion Dorsi Flexion Inversion/Eversion?

Intertarsal joint: Subtalar joint (ST J.) Talocalcaneonavicular joint (TCN J.) Calcaneocuboid (small rotation) Naviculoconeiforms (almost no movement)

Calcaneous bone

Calcaneous bone

Subtalar joint

Lateral

Medial

sustentaculum tali (talar shelf) fracture

Subtalar joint

TCN joint

& calcaneonavicular ligament TCN joint & calcaneonavicular ligament

Inteosseeous talocalcaneal ligament separates the ST J. from TCN J.

Other ligaments Calcaneofibular Tibionavicular Tibiocalcaneal Talocalcaneal

Calcaneofibular

Talar tilt test to evaluate the calcaneofibular ligament.

Deltoid

Deltoid

eversion injuries : Pott's fracture The medial and lateral ligaments of the ankle. (A) The medial (deltoid) ligament is quite strong, binding the tibia to 3 bones. the calcaneus, navicular, and talus. (B) In a twisting injury. involving eversion of the foot. the strong deltoid ligament might not tear but instead pulls off the medial malleolus and forces a fracture of the fibula (Pott's fracture). (C) The relatively weak lateral ligament is commonly injured. particularly with inversion injuries. where it may tear (ankle sprain) and/or tear off the lateral malleolus.

inversion injuries: ankle sprain The medial and lateral ligaments of the ankle. (A) The medial (deltoid) ligament is quite strong, binding the tibia to 3 bones. the calcaneus, navicular, and talus. (B) In a twisting injury. involving eversion of the foot. the strong deltoid ligament might not tear but instead pulls off the medial malleolus and forces a fracture of the fibula (Pott's fracture). (C) The relatively weak lateral ligament is commonly injured. particularly with inversion injuries. where it may tear (ankle sprain) and/or tear off the lateral malleolus.