Deltoid Ligaments

Question 1

Calcaneonavicular Ligament

Answer 1

Medioplantar Oblique: originates in coronoid fossa, inserts at tubercle of navicular

Superomedial: originates from anterior surface of sustentaculum tali, inserts onto superomedial part of navicular

Inferoplantar: originates from lateral aspect of coronoid fossa, inserts at the inferior proximal aspect of the navicular.

Question 2

Caclaneonavicular Ligament Function and MoI

Answer 2

Function: Supports arch, talus, and stabilises the talonavicular joint.

MoI: over-use, trauma, eversion ankle strain

Question 3

Tibiocalcaneal Ligament

Answer 3

Origin: medial tibial malleolus

Insertion: posterior sustentaculum calcanei

Question 4

Tibiocalcaneal Ligament Function and MoI

Answer 4

Functions: Controls abduction, ankle stability and tightens with plantar/dorsiflexion

MoI: Forceful pronation and rotation movements of the hindfoot

Question 5

Tibionavicular Ligament

Answer 5

Origin: Anterior colliculus of the medial malleolus

Insertion: dorsomedial aspect of the navicular bone

Question 6

Tibionavicular Ligament Function and MoI

Answer 6

Function: Limits ankle eversion; becoming tighter during plantarflexion and abduction.

MoI: Related to the position of the foot at the time of injury.