Semitendinosus and Semimembranosus (of the Hamstring Group) – myofascial trigger points and their referral zones.
Semitendinosus and semimembranosus are medial hamstrings.
Hamstring group:
- Semitendinosus
- Semimembranosus
- Biceps femoris

Posterior view of myofascial trigger points in the right-side semitendinosus and semimembranosus (of the hamstring group) and their corresponding referral zones.