<unk>  can occur when the<unk><unk>  is injured in sports that require explosive bending of the knee as seen in sprinting. If the athlete is fatigued or has not warmed up properly he/she may suffer a hamstring strain/rupture, which is the tearing of the hamstring muscle. Avulsion of the<unk><unk><unk>  is the complete pulling away of the<unk>  from the bone. This most commonly occurs where the long head attaches to the ischial tuberosity. Injuries to<unk><unk>  are more common than to other hamstring muscles. One theory for this is the fact that each of the two heads are innervated by different branches of the sciatic nerve. In states of fatigue or when the muscle is not fully warmed up, uncoordinated firing of the nerves may cause the muscle to contract inappropriately during movement, leading to injury.<unk><unk><unk>  avulsion may also be associated with an avulsion fracture which occurs when a piece of the bone is pulled away with the<unk> , during forceful contraction. Isolated avulsion is rare.
Biceps femoris tendon rupture
Biceps tendon rupture
Quadriceps tendon rupture
Achilles tendon rupture
Rotator cuff tear
Patellar tendon rupture
Milwaukee shoulder syndrome
Iliotibial band syndrome