Ankle joint

ANKLE JOINT

NIKTHA

TYPE:

SYNOVIAL JOINT OF HINGE VARIETY

LOWER END OF TIBIA INCLUDING MEDIAL MALLEOLUS

LATERAL MALLEOLUS OF FIBULA

INFERIOR TRANSVERSE TIBIOFIBULAR LIGAMENT

UPPER ARTICULAR SURFACE:

INFERIOR ARTICULAR SURFACE:

ARTICULAR AREAS ON UPPER, MEDIAL&LATERAL ASPECTS OF TALUS

Close interlocking of articularsurfacesStrong collateral ligaments on

sidesTendons crossing 4 in front,3 onposteromedial side & 2 on

postereolateral side

Stability of joint

Displacement of tibia & fibula over talus prevented by: Wedge shaped

talus wider anteriorly

Posterior border of lower end of tibia prolonged downwards

Inferior transverse tibiofibular lig

Tibiocalcanean, posteriortibiotalar,calcaneofibular&posterior talofibular lig

POSTERIOR

TIBIOTALAR

TIBIO CALCANEAN

POSTERIOR TALOFIBULAR LIG

CALCANEOFIBULAR LIG

LIGAMENTSFIBROUS CAPSULETHE DELTOID OR MEDIAL LIGAMENT

LATERAL LIGAMENT

FIBROUS CAPSULE

POSTERO SUPERIORLY-INFERIOR TRANSVERSE TIBIOFIBULAR LIGAMENT

ANTERIO INFERIORLY DORSUM OF NECK OF TALUS

DELTOID /MEDIAL LIGAMENTTIBIONAVICULAR ARE ATTACHED TO TUBEROSITY OF NAVICULARBONE&TO MEDIAL MARGIN OF SPRING LIG

TIBIOCALCANEAN ARE ATTACHED TO WHOLE LENGTH OF SUSTENTACULUM TALI

POSTERIOR TIBIOTALAR ARE ATTACHED TO MEDIAL TUBERCLE &TO ADJOINING PART OF MEDIAL SURFACE OF TALUS

POSTERIOR TALOLOFIBULAR LIG-LOWER PART OF MALLEOLAR FOSSA TO LATERAL TUBERCLE OF TALUS

LATERAL LIGAMENT

ANTERIOR TALOFIBULAR LIG –ANTERIOR MARGIN OF LATERAL MALLEOLUS TO NECK OF TALUS JUST IN FRONT OF FIBULAR FACET

CALCANEOFIBULAR LIG-NOTCH ON LATERAL MALLEOLUS TO TUBERCLE ON LATERAL SURFACE OF CALCENEUM