Talocalcaneal joint

Talocalcaneal Joint

The Talocalcaneal joint or Subtalar joint is a joint in the human anatomy located in the foot. It is a complex joint that contributes to the movement, balance, and flexibility of the foot. The joint is formed by the articulation between the talus bone and the calcaneus bone, hence the name talocalcaneal joint.

Anatomy

The talocalcaneal joint is composed of three facets: anterior, middle, and posterior. The anterior and middle facets are together referred to as the anterior subtalar joint, while the posterior facet is referred to as the posterior subtalar joint. The joint is surrounded by a fibrous capsule and is lined by synovial membrane, which produces synovial fluid for lubrication.

Function

The primary function of the talocalcaneal joint is to allow for inversion and eversion of the foot. This is crucial for adapting to uneven surfaces and for maintaining balance. The joint also contributes to the complex movements of pronation and supination of the foot.

Clinical Significance

Injuries or disorders of the talocalcaneal joint can lead to foot pain and mobility issues. Conditions such as subtalar arthritis, subtalar instability, and tarsal coalition can affect the joint. Treatment options can range from conservative methods like physical therapy and medication to surgical interventions.

See Also

• Foot
• Ankle joint
• Talus bone
• Calcaneus bone