Biology lesson: tendons attach muscles to bone. Anytime a tendon attaches a muscle to a bone, that tendon can pull away from the bone. Sometimes it can partially tear from the bone, and sometimes it can fully detach. When it comes to hamstring tears, we are usually talking about the origin in the buttock on the sit bone (or ischial tuberosity). There are several hamstring tendons: semi membranous, semitendinosus, and biceps femoris (because it...