Editing Hamstring (section)

==Criteria==
The common criteria of any hamstring muscles are: 
# Muscles should originate from [[ischial tuberosity]].
# Muscles should be inserted over the knee joint, in the [[tibia]] or in the [[fibula]].
# Muscles will be innervated by the [[tibial nerve|tibial branch of the sciatic nerve]].
# Muscle will participate in flexion of the [[knee joint]] and extension of the [[hip joint]].

Those muscles which fulfill all of the four criteria are called true hamstrings.
<br /> The [[adductor magnus]] reaches only up to the adductor tubercle of the femur, but it is included amongst the hamstrings because the tibial collateral ligament of the knee joint morphologically is the degenerated tendon of this muscle. The ligament is attached to the medial [[epicondyle]], two millimeters from the adductor tubercle.