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Ankle Joint
From WikiSM
Contents
Description

Normal mortise radiograph of the ankle showing the articular components of the distal fibula, tibia and talus[1]
- Alternate names
- Talocrural Joint
- Osseous Components
- Synovial joint
- Ankle Mortise
- Defined by medial and lateral malleoli and the distal tibial plafond
Stabilizers
- Lateral Ligaments
- Lateral Collateral Ligament: ATFL, CFL, PTFL
- Anterior Talofibular Ligament (ATFL)
- Calcaneofibular Ligament (CFL)
- Posterior Talofibular Ligament (PTFL)
- Medial Ligaments
Actions
- Hinge joint permitting dorsiflexion and plantarflexion
- Dorsal flexion (50°)
- Plantar flexion (20°)
- Axis of motion is rotated laterally 20–30°, inclined downward 10°[2]
- Occurs because fibular malleolus extends more distally and posteriorly than the tibial malleoli
- Surface of talus is wider anteriorly and also cone shaped, apex pointing medially
- Dorsiflexion: abduction, eversion
- Plantarflexion: adduction, inversion
Vascular Supply
- Malleolar branches of
Innervation
- Branches of
Clinical Significance
See Also
References
- ↑ https://www.startradiology.com/internships/general-surgery/ankle/x-ankle/
- ↑ Inman, VT . The Joints of the Ankle. Baltimore, MD: Williams & Wilkins; 1976.