From the case:
Extrinsic deep flexor tendons of the foot
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Three representative coronal MR images of the deep flexor tendons (marked in blue) distal to the ankle. TP= tibialis posterior, FDL= flexor digitorum longus, FHL= flexor hallucis longus.
Case Discussion
The crossing of the FHL and FDL located near the distal coronal image is known as the knot of Henry.