Structures

  • Psoas major
  • Iliacus
  • Rectus femoris
  • Vastus intermedius
  • Vastus medialis
  • Vastus lateralis
  • Sartorius

MuscleActionOriginInsertionInnervationBlood supply
Psoas major- Main flexor of hip
- Transerve processes of L1-5
- Vertebral bodies and discs of T12- L5
- Lesser trochanter of femur- Direct fibres of L1 - L3 of lumbar plexus- - Lumbar branch of iliolumbar artery
Iliacus- Flexion of hip- Upper 2/3 of illiac fossa
- Anterior sacroilliac ligament
- Iliolumbar ligament
- Lesser trochanter of femur- Muscular branch of femoral nerve (L1, L2, L3)- - Lumbar branch of iliolumbar artery
Rectus femoris- Extends the knee- Straight head from anterior inferior iliac spine
- Reflected head from groove just above acetabulum
- Base of Patella (then joins patella ligament to attach in tibial tuberosity)- Muscular branches of femoral nerve: L2, L3, L4- Lateral circumflex femoral artery
Vastus intermedius- Extends the knee- Superior half of anterior and lateral surfaces of femur
- Lateral border of patella (then joins patella ligament to attach in tibial tuberosity)- Muscular branches of femoral nerve: L2,L3, L4- Lateral circumflex femoral artery
Vastus medialis- Extends the knee- Superior half of anterior and medial surfaces of femur- Medial border and base of patella (then joins patella ligament to attach in tibial tuberosity)- Muscular branches of femoral nerve: L2,L3, L4- Femoral artery
- Superior medial genicular branch of popliteal artery
Vastus lateralis- Extends the knee- Superior half of anterior and lateral surfaces of femur- Lateral border and base of patella (then joins patella ligament to attach in tibial tuberosity)- Muscular branches of femoral nerve: L2,L3, L4- Lateral circumflex femoral artery
Sartorius- Flexion of hip
- Lateral rotation of hip
- Flexion of the knee
- Anterior superior iliac spine- Supero-medial tibia- Femoral nerve: L2, L3, L4- Femoral artery