Medioplantar oblique ligament

Last revised by Dr Joachim Feger on 29 Aug 2021

The medioplantar oblique ligament is one of three components of the spring ligament complex, stabilizing the longitudinal arch of the foot 1,2.

The medioplantar oblique ligament connects the calcaneal coronoid fossa to the navicular bone and runs plantar in relation to the superomedial portion of the calcaneonavicular ligament and inferior to the talar head 1,2.

The medioplantar oblique ligament originates from the coronoid fossa of the calcaneus medial to the origin of the inferoplantar longitudinal ligament 1.  

The distal insertion is located at the medial inferior aspect of the navicular bone 1.

The medioplantar oblique ligament is inconsistently visualized on ultrasound but can be seen on MRI 2,3.

On MRI the medioplantar oblique ligament is best visualized on axial planes lateral to the inferoplantar longitudinal ligament and normally shows a striated appearance 2.

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