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The Biceps Femoris is a member of the Hamstring Group, which is composed of the:
- Semitendinosus
- Semimembranosus
- Biceps femoris
The Biceps Femoris has two heads: Long head and Short head.
ATTACHMENTS:
- The biceps femoris attaches from the ischial tuberosity (long head) and the linea aspera and lateral supracondylar line of the femur (short head) to the head of the fibula.
ACTIONS:
- Flexes the leg at the knee joint.
- Extends the thigh at the hip joint (long head only).
- Posteriorly tilts the pelvis at the hip joint (long head only).
- Laterally rotates the leg at the knee joint.
NOTE: The biceps femoris short head attaches proximally right next to where the gluteus maximus attaches distally.
