Merck Manual

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Displacement of deep digital flexor tendon, rupture of superficial digital flexor tendon, horse
Displacement of deep digital flexor tendon, rupture of superficial digital flexor tendon, horse

A) Displacement of the deep digital flexor tendon (lateral and caudal heads) over the sustentaculum tali and the medial head of the deep digital flexor. B) Rupture of the superficial digital flexor tendon over the calcaneus.

Illustration by Dr. Gheorghe Constantinescu.