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ankle joint (articular surfaces (these structures form a deep socket)…

- - - - by the strong tibiofibular ligaments
      - & by slight movements of the fibula
        at the superior tibiofibular joint
- - - - -which pass frm the leg to the foot
    - - the talus is wedge-shaped
        
        -being wider anteriorly
        -the melleoli are oriented to fit this wedge
      - the posterior border of the
        lower end of the tibia is
        prolonged downwards
      - the presence of
        inferior transverse tibiofibular ligament
      - the tibiocalcanean
        
        posterior tibiotalar
        
        calcaneofibular
        
        & posterior talofibular ligaments
        pass backwards & resist
        forward movement of the
        tibia & fibula
- - - - posterosuperiorly
        
        Is att to the inferior
        tranverse tibiofibular ligament
      - anteroinferiorly
        
        is att to the dorsum
        of the neck of the talus
        at some distance frm the
        trochlear surface
    - - are loose & thin
        to allow hinge movements
    - - are supported by strong
        collateral ligaments
  - - - has a superficial & deep part
        both parts have a common att above
        to the apex & margins of
        medial melleolus
    - - anterior fibers
        (tibionavicular)
        
        are att to the
        
        tuberosity of the navicular bone
        
        & to the medial margin of spring ligament
      - middle fibers
        (tibiocalcanean)
        
        are att to the
        whole length of the
        
        sustentaculum tali
      - posterior fibers
        ( tibiotalar)
        
        are att to the
        
        medial tubercle
        
        & to the adjoining part of
        the medial surface of talus
    - - is att to the
        
        ant part of the
        medial surface of talus
  - - - is a flat band
        which passes frm the
        ant margin of the lat malleolus
        -to the neck of the talus
        just infront of the fibular facet
    - - passes frm the
        lower part of the
        malleolar fossa of fibula
        -to the lat tubercle of talus
    - - is a long rounded cord
        which passes frm the
        -notch on the lowed border of
        lat malleolus
        -to the tubercle on the lat surface
        of calcaneum
        it is crossed by the tendons of
        -peroneus longus & brevis
- - - - tibialis anterior
        
        acc
        
        extensor digitorum longus
        
        extensor hallucis longus
        
        peroneus tertius
  - - - gastrocnemius
        
        soleus
        
        acc
        
        plantaris
        
        tibialis posterior
        
        flexor digitorum longus
        
        flexor hallucis longus
  - - - tibialis anterior
        
        tibialis posterior
    - - fibularis longus
        
        fibularis tertius
        
        fibularis brevis