Subtalar joint

Subtalar Joint

The Subtalar Joint is a complex anatomical structure located in the foot. It is a joint that allows for the movement and flexibility of the foot, and is crucial for activities such as walking, running, and jumping. The subtalar joint is composed of two bones: the talus and the calcaneus.

Etymology

The term "subtalar" is derived from the Latin words "sub," meaning under, and "talar," meaning of the talus. This is in reference to the location of the joint, which is situated beneath the talus bone.

Anatomy

The subtalar joint is formed by the articulation of the talus and the calcaneus, the two largest bones in the foot. The joint is divided into two parts: the anterior subtalar joint and the posterior subtalar joint. The anterior subtalar joint is responsible for inversion and eversion of the foot, while the posterior subtalar joint allows for plantar flexion and dorsiflexion.

Function

The primary function of the subtalar joint is to allow for the movement and flexibility of the foot. This includes inversion and eversion, which are movements that tilt the sole of the foot towards (inversion) or away from (eversion) the midline of the body. The subtalar joint also allows for plantar flexion and dorsiflexion, which are movements that point the toes downwards (plantar flexion) or upwards (dorsiflexion).

Clinical Significance

Injuries to the subtalar joint can result in a variety of conditions, including subtalar arthritis, subtalar instability, and subtalar dislocation. Treatment for these conditions may involve physical therapy, medication, or in severe cases, surgery.

See Also

• Foot
• Ankle
• Talus (bone)
• Calcaneus

References

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  Subtalar joint

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  Bones of the right foot. Dorsal surface.

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  Bones of the right foot. Plantar surface.

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  Sagittal section through the foot.