Crural deep fascia (to which biceps femoris m. (1) attaches) has been reflected (and held by forceps) in this lateral view of the crus. Three muscles of the caudal group can be seen: deep digital flexor m. (2), superficial digital flexor m. (3), and gastrocnemius m. (4).

The calcanean tendon (5) is composed of a core component formed by tendons of the superficial digial flexor and gastrocnemius muscles. The tendon also has deep fascia components contributed by biceps femoris, semitendinosus, and gracilis muscles. (In the cat, a soleus m. contributes to the tendon core.)

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