MRI
Subcutaneous oedema at the anterior leg.
Tibialis anterior is completely ruptured. Both proximal and distal tendon fibres are thickened but more so distally with additional high signal extending to the insertion. The defect gap measures approximately 6-7 cm. The tendon at the myotendinous junction is also thickened with a mild amount of adjacent oedema.
Extensor hallucis longus and extensor digitorum longus are intact. Extensor retinaculum appears intact.
Calcaneonavicular coalition (probably fibrous) with bone marrow oedema signal and low T1 signal on both sides of the synchondrosis. Mild osteophytic lipping of the lateral talar head. Mild bone marrow oedema through the talar neck and lateral body.