In the pelvis the hamstring origin occurs at the bottom of pelvis on a bone called the ischial tuberosity

(sit bone). The semitendinosus and biceps femoris muscles blend together and share a common origin at the ischial tuberosity (sit bone) called the conjoint tendon.

Does hamstring connect to pelvis?

There are four hamstring muscles in the thigh. Each muscle is attached to bone by way of a tendon. At the proximal end, three of the hamstring tendons originate off the pelvis bone at the ischium otherwise known as the “sits” bones. The muscles then course down the thigh distally towards the knee.

Where do the hamstrings attach?

The hamstrings make up the bulk in back of the thigh. They are formed by three muscles and their tendons. The hamstrings connect to the ischial tuberosity, the small bony projection on the bottom of the pelvis, just below the buttocks.