Calcaneocuboid Joint

Description

The calcaneocuboid joint

Chopart joint articulations were analyzed with respect to the talus and the calcaneus. The talar head was divided into 6 regions and the calcaneocuboid facet was divided into 4 regions using the principle axes of the joint surface (Left). The Chopart joint occurs between the red (talus and calcaneus) and blue (navicular and cuboid) bones (Right).

Lateral x-ray view demonstrating the subluxation of the calcaneocuboid joint. Fig. 3 Oblique x-ray view of the medial border of the fourth metatarsal not completely in line with the medial border of the cuboid bone.

Other Names

• Calcaneocuboid Joint
• Latin: articulatio calcaneocuboidea

General

• Joint formed by articulation between calcaneus, cuboid
• Synovial saddle type articulation
• Important part of the chopart joint (along with the Talonavicular Joint)

Gross Anatomy

• Anterior surface of the calcaneus
• Posterior surface of the cuboid
• Joint capsule is is thickened superiorly, inferiorly
• Modified saddle-type joint
• Minimal movement occurs

Ligaments

• Calcaneocuboid part of the Bifurcate Ligament
• Dorsal calcaneocuboid ligament
• Long plantar ligament
• Plantar calcaneocuboid ligament (short plantar ligament)

Innervation

• Plantar: Deep Fibular Nerve
• Dorsal: Sural Nerve

Movement

• Commonly termed the least mobile joint of the foot
• Cuboid can rotate as much as 25 degrees about an oblique axis during inversion and eversion
  • Also known as obvolution-involuation

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Clinical Significance

• Chopart Fracture Dislocation
• Chopart Joint Sprain
• Rarely, Chronic Ankle Instability
• Cuboid Syndrome

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See Also

• Foot Anatomy Main
• Foot Pain Main
• Physical Exam Foot

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