Ankle Joint

Dr. Heba Kalbouneh

Associate Professor of Anatomy and Histology

Articulation

Between the lower end of the tibia, the

two malleoli, and the body of the talus

The articular surfaces are covered with

hyaline cartilage

Type

Synovial hinge joint

Capsule

The capsule encloses the joint and is

attached to the bones near their articular

margins

Movements:

Plantarflexion and dorsiflexion of the foot

Note:

The ankle joint is most stable

when the foot is dorsiflexed

Fib

ula

Talus

Tib

ia

The talus is able to move on a transverse axis in a

hingelike manner. The shape of the bones and the

strength of the ligaments and the surrounding

tendons make this joint strong and stable.

Ligaments

The ankle joint is stabilized by medial (deltoid) and lateral ligaments

Medial (deltoid) ligament:

Is triangular in shape

The apex is attached to medial malleolus

The base is attached to:

Navicular tuberosity and plantar calcaneonavicular (spring) ligament: Tibionavicular part

Sustentaculum tali of calcaneus: Tibiocalcaneal part

Talus: Anterior and Posterior tibiotalar parts

Medial view

Tibionavicular part

Tibiocalcaneal part

Anterior tibiotalar part

Posterior tibiotalar part

Medial

malleolus

Sustentaculum

tali Spring ligament

Lateral view

Lateral ligament:

Composed of three separate ligaments

Anterior talofibular ligament

Posterior talofibular ligament

Calcaneofibular ligament

Anterior talofibular ligament

Posterior

talofibular

ligament

Calcaneofibular

ligament

Fib

ula

Note:

Posterior talofibular

ligament is attached to

malleolar fossa of fibula

(posteromedial)

Plantar view

Calcaneus

Navicular

Talus The major joints at which inversion

and eversion occur include:

Subtalar joint

Talocalcaneonavicular joint

Calcaneocuboid joint

Cuboid

Subtalar joint

Articulation: is the posterior joint between the

talus and the calcaneus

Ligaments:

1-Medial and lateral talocalcaneal ligaments

2-Interosseous talocalcaneal ligament: is the

main bond of union between the two bones

Type: Plane Synovial

Movements: Inversion and eversion

Lateral view

Sustentaculum tali

Note: The talus is snail-

shaped when viewed from

medial or lateral

sides

Medial view

Calcaneus

Talus

Sinus tarsi Lateral view

Calcaneus

Talus

Lateral talocalcaneal ligament

Lateral view

Interosseous talocalcaneal ligament

The sulcus tali and the

sulcus calcanei in the

articulated foot form a

tunnel, the sinus tarsi,

which is occupied by the

strong interosseous

talocalcaneal ligament

Lateral view

Medial talocalcaneal ligament

Medial view

Medical images

Exposure of calcaneocuboid joint

Hallux valgus

Release of flexor hallucis longus

Fracture of the 5th metatarsal base

Diagnose???