Structures

  • Biceps femoris
  • Semimembranosus
  • Semitendinosus
MuscleActionOriginInsertionInnervationBlood supply
Biceps femoris- Flexion of knee
- Lateral rotation tibia
- Extension of hip (long head only)
- Long head: Ischial tuberosity
- Short head: linea aspera and lateral supracondylar ridge of femur
- Fibula head
- Lateral tibial condyle
- Long head: tibial nerve (L5,S1,S2)
- Short head: common peroneal nerve (L5,S1,S2)
- Profunda femoris artery
- Popliteal artery
- Inferior gluteal artery
Semimembranosus- Flexion of knee
- Extension of hip
- Medial rotation of tibia (esp. when knee flexed)
- Ischial tuberosity- Posterior portion of medial tibial condyle- Tibial nerve: L5,S1,S2- Profunda femoris artery
- Popliteal artery
- Inferior gluteal artery
Semitendinosus- Flexion of knee
- Extension hip
- Medial rotation of tibia (esp. when knee flexed)

- Ischial tuberosity- Superomedial tibial shaft- Tibial nerve: L5,S1,S2- Profunda femoris artery
- Popliteal artery
- Inferior gluteal artery