ANKLE JOINT. anatomy presentation pptx 1

Ankle joint anatomy

1. ANKLE JOINT

2. ARTICULATION LOWER END OF TIBIA + TWO MALLEOLI + BODY OF TALUS ARTICULAR SURFACES -> HYALINE CARTILAGE

3. TYPE -> SYNOVIAL HINGE JOINT CAPSULE ENCLOSES THE JOINT ATTACHED TO BONES NEAR THEIR ARTICULAR MARGINS

4. LIGAMENTS MEDIAL/ DELTOID LIGAMENT ATTACHED BY ITS APEX TO THE TIP OF MEDIAL MALLEOLUS BELOW, THE DEEP FIBERS ARE ATTACHED TO THE NONARTICULAR AREA ON THE MEDIAL SURFACE OF BODY OF TALUS THE SUPERFICIAL FIBERS ARE ATTACHED TO THE MEDIAL SIDE OF TALUS, SUSTENTACULUM TALI, THE PLANTAR CALCANEONAVICULAR LIGAMENT AND THE TUBEROSITY OF NAVICULAR BONE LATERAL LIGAMENT WEAKER THAN MEDIAL LIGAMENT CONSISTS OF THREE BANDS ANTERIOR TALOFIBULAR LIGAMENT RUNS FROM LATERAL MALLEOLUS TO LATERAL SURFACE OF THE TALUS CALCANEOFIBULAR LIGAMENT RUNS FROM THE TIP OF LATERAL MALLEOLUS DOWNWARD & BACKWARD TO THE LATERAL SURFACE OF CALCANEUM POSTERIOR TALOFIBULAR LIGAMENT RUNS FROM LATERAL MALLEOLUS TO THE POSTERIOR TUBERCLE OF TALUS

5. SYNOVIAL MEMBRANE: LINES THE CAPSULE NERVE SUPPLY: DEEP PERONEAL & TIBIAL NERVES

6. MOVEMENTS DORSIFLEXION (EXTENSION): TOES POINT UPWARDS LIMITED BY THE TENSION OF THE TENDOCALCANEUS, THE POSTERIOR FIBERS OF MEDIAL LIGAMENT & THE CALCANEOFIBULAR LIGAMENT PERFORMED BY: TIBIALIS ANTERIOR EXTENSOR HALLUCIS LONGUS EXTENSOR DIGITORUM LONGUS PERONEUS TERTIUS PLANTAR FLEXION: TOES POINT DOWNWARDS LIMITED BY THE TENSION OF THE OPPOSING MUSCLES, THE ANTERIOR FIBERS OF MEDIAL LIGAMENT & THE ANTERIOR TALOFIBULAR LIGAMENT PERFORMED BY: GASTROCNEMIUS SOLEUS PLANTARIS PERONEUS LONGUS PERONEUS BREVIS TIBIALIS POSTERIOR FLEXOR DIGITORUM LONGUS FLEXOR HALLUCIS LONGUS

7. Note : INVERSION & EVERSION DO NOT TAKE PLACE AT ANKLE JOINT