The ankle joint is a synovial hinge joint between the lower end of the tibia, the lateral malleolus of the fibula, and the talus bone of the foot. It is stabilized by ligaments including the deltoid ligament, lateral ligament, fibrous capsule, and inferior transverse tibiofibular ligament. The talus bone fits into the upper articular surfaces of the tibia and fibula like a wedge to prevent displacement and allow hinging motions.

1. ANKLE JOINT

2. TYPE:
SYNOVIAL JOINT OF
HINGE VARIETY

3.  LOWER END OF TIBIA
INCLUDING MEDIAL
MALLEOLUS
 LATERAL MALLEOLUS
OF FIBULA
 INFERIOR TRANSVERSE
TIBIOFIBULAR
LIGAMENT
UPPER ARTICULAR
SURFACE:

4. INFERIOR ARTICULAR
SURFACE:
ARTICULAR AREAS ON
UPPER,
MEDIAL&LATERAL
ASPECTS OF TALUS

7. 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,c
alcaneofibular&po
sterior talofibular lig

11. LIGAMENTS
FIBROUS CAPSULE
THE DELTOID OR MEDIAL
LIGAMENT
LATERAL LIGAMENT

12. FIBROUS CAPSULE
POSTERO
SUPERIORLY-
INFERIOR
TRANSVERSE
TIBIOFIBULAR
LIGAMENT

13. ANTERIO
INFERIORLY
DORSUM OF
NECK OF
TALUS

15. DELTOID /MEDIAL LIGAMENT
TIBIONAVICULAR ARE
ATTACHED TO
TUBEROSITY OF
NAVICULARBONE&TO
MEDIAL MARGIN OF
SPRING LIG

16. TIBIOCALCANEAN ARE
ATTACHED TO WHOLE
LENGTH OF
SUSTENTACULUM TALI

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

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

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

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