Hamstrings graft

Illustration from the back of the knee showing the tendon of the semitendinosus - which is accessible from an incision on the medial side. The tendon of the gracilis is not shown but runs alongside.

Tendons involved in a hamstrings ACL graft

Usually the ACL surgeon will create a 4-stranded graft using the semi-tendinosus - often together with another muscle, the gracilis (which is itself not actually a hamstring).

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