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ANKLE JOINT

ANKLE JOINT. Dr. Ahmed Fathalla Ibrahim. ANKLE JOINT. TYPE It is synovial, hinge joint ARTICULAR SURFACES UPPER: A socket formed by the lower end of tibia, medial malleolus, lateral malleolus & transverse tibiofibular ligament LOWER Body of talus. LIGAMENTS. MEDIAL (DELTOID) LIGAMENT

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ANKLE JOINT

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  1. ANKLE JOINT Dr. Ahmed Fathalla Ibrahim

  2. ANKLE JOINT TYPE • It is synovial, hinge joint ARTICULAR SURFACES UPPER: • A socket formed by the lower end of tibia, medial malleolus, lateral malleolus & transverse tibiofibular ligament LOWER • Body of talus

  3. LIGAMENTS MEDIAL (DELTOID) LIGAMENT • A strong triangular ligament • Its apex is attached to tip of medial malleolus • Its base is attached to: navicular bone, plantar calcaneo-navicular ligament, neck of talus, sustentaculum tali, body of talus

  4. LIGAMENTS LATERAL LIGAMENT Formed of 3 separate bands: ANTERIOR TALOFIBULAR • From anterior border of lateral malleolus to neck of talus POSTERIOR TALOFIBULAR • From malleolar fossa to posterior tubercle of talus CALCANEOFIBULAR • From tip of lateral malleolus to lateral surface of calcaneus

  5. RELATIONS • ANTERIOR: structures passing deep to extenxor retinacula • POSTERIOR: tendo-calcaneus & tendon of plantaris • POSTERO-LATERAL: tendons of peroneus longus & brevis • POSTERO-MEDIAL: structures passing deep to flexor retinaculum

  6. SUPPLY • NERVES: • Tibial • Deep peroneal • ARTERIES: • Anterior tibial • Dorsalis pedis • Posterior tibial

  7. MOVEMENTS DORSIFLEXION • Muscles of anterior compartment of leg PLANTERFLEXION • Initiated by soleus • Maintained by gastrocnemius • Helped by other muscles of posterior compartment of leg

  8. MOVEMENTS • N.B.: • THE MOVEMENT OF INVERSION & EVERSION IS PERFORMED AT SUBTALAR JOINTS AND NOT AT ANKLE JOINT • INVERTORS: TIBIALIS ANTERIOR & POSTERIOR (helped by flexor digitroum longus & flexor hallucis longus) • EVERTORS: PERONEUS LONGUS, BREVIS & TERTIUS

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