Tibionavicular Ligament

Description

The superficial layer is a broad and triangular structure composed of multiple fascicles. It is the weakest layer of the deltoid complex. The commonly recognized components of this layer are the tibionavicular ligament (TNL), the tibiospring ligament (TSL), and the tibiocalcaneal ligament (TCL). All three of these fascicles blend with the superomedial portion of the spring ligament complex (SL).

Other Names

• Tibionavicular Ligament

General

• Belongs to the medial supporting structures of the ankle joint
• Considered one of the four superficial components of the deltoid ligament

Gross Anatomy

• Located superficial to Deep Anterior Tibiotalar Ligament
• Superficial to trochlea of talus
• Runs in a fan-like fashion to the navicular
• Increased tension with plantarflexion, abduction

Attachments

• Origin: anterior colliculus of medial malleolus, just above distal insertion of spring ligament
• Insert: anterior to the articular surface of the talonavicular joint

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Clinical Significance

• Deltoid Ligament Injury
• Spring Ligament Injury

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See Also

• Foot And Ankle Anatomy Main
• Ankle Pain Main
• Physical Exam Foot

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