Classification and Articular surfaces:


Synovial joint of the tenon-mortise variety. Functionally hinge.

Articular surfaces:

  • Inferior surface of the tibia

  • Medial surface of lateral malleolus

  • Lateral surface of the medial malleolus

  • Trochlear and malleolar surfaces of talus

Capsule Features:

•  Thin anteriorly and posteriorly
•  Capsular attachments-

  • Articular margins of bones

  • On anterior surface of part of talus

  • Posterior tibiofibular ligament

Synovial membrane:
  • Lines the internal surface of fibrous capsule

  • Separated from anterior and posterior parts of capsule by fat pads


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CHAPTER 11: The Ankle Joint