ankle joint - ju medicine › ... › ankle_joint.pdf · ankle joint dr. heba kalbouneh associate...
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Ankle Joint
Dr. Heba Kalbouneh
Associate Professor of Anatomy and Histology
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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
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Note:
The ankle joint is most stable
when the foot is dorsiflexed
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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.
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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
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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
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Note:
Posterior talofibular
ligament is attached to
malleolar fossa of fibula
(posteromedial)
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Plantar view
Calcaneus
Navicular
Talus The major joints at which inversion
and eversion occur include:
Subtalar joint
Talocalcaneonavicular joint
Calcaneocuboid joint
Cuboid
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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
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Sustentaculum tali
Note: The talus is snail-
shaped when viewed from
medial or lateral
sides
Medial view
Calcaneus
Talus
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Sinus tarsi Lateral view
Calcaneus
Talus
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Lateral talocalcaneal ligament
Lateral view
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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
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Medial talocalcaneal ligament
Medial view
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Medical images
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Exposure of calcaneocuboid joint
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Hallux valgus
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Release of flexor hallucis longus
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Fracture of the 5th metatarsal base
Diagnose???