The Biceps femoris is the backbone of the posterior chamber of the thigh and lies in the
posterior structure. It occurs mainly with two ‘heads’, called ‘long head’ (above) and ‘short
head’ (deep). It is part of the hamstrings.
Structure of biceps femoris
It has two source headers:
the long head emerges from the lower extremity and within the posterior part of the
ischium joint. This is a common tendon root in the semitendinosus muscle, as well as the
lower part of the obliotuberous ligot.
the short head, extending from the old abdomen of the linea Aspera, between the adductor
appendix and the Magnus lateralis extending almost as high as the insertion of the gluteus
Maximus, from the growth corresponding to the previous linea Aspera to 5 cm. of recent
condyle; and on the inner side septum.