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Muscles of the Thigh, Hip, Pelvis

Muscles of the Thigh, Hip, Pelvis. Gluteus Maximus. Origin: posterior gluteal line, posterior sacrum and coccyx, sacrotuberous ligament Insertion: upper fibers: iliotibial tract lower fibers: gluteal tuberosity Innervation: inferior gluteal nerve (S1). Gluteus Maximus. Gluteus Maximus.

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Muscles of the Thigh, Hip, Pelvis

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  1. Muscles of the Thigh, Hip, Pelvis

  2. Gluteus Maximus • Origin: • posterior gluteal line, posterior sacrum and coccyx, sacrotuberous ligament • Insertion: • upper fibers: iliotibial tract • lower fibers: gluteal tuberosity • Innervation: • inferior gluteal nerve (S1)

  3. Gluteus Maximus

  4. Gluteus Maximus • Actions: • Hip extension • External rotation • Hip adduction • Hip abduction

  5. Tensor Fascia Latae • Origin: • anterior part of iliac crest, anterior superior iliac spine • Insertion: • iliotibial tract • Innervation: • superior gluteal nerve (L4,5,S1)

  6. Tensor Fascia Latae

  7. Tensor Fascia Latae

  8. Tensor Fascia Latae • Actions: • Hip flexion • Hip abduction • Internal rotation of hip • Knee extension

  9. Iliotibial Band

  10. Gluteus Medius • Origin: • ilium between posterior and anterior gluteal lines • Insertion: • greater trochanter • Innervation: • superior gluteal nerve (L5)

  11. Gluteus Medius

  12. Gluteus Medius • Actions: • Hip abduction • Internal rotation of hip

  13. Gluteus Minimus • Origin: • ilium between anterior and inferior gluteal lines • Insertion: • greater trochanter • Innervation: • superior gluteal nerve (L5)

  14. Gluteus Minimus

  15. Gluteus Minimus • Actions: • Hip abduction • Internal rotation of hip

  16. Pectineus • Origin: • superior surface pubis • Insertion: • pectineal line of femur • Innervation: • femoral and obturator nerve (L2-4)

  17. Pectineus

  18. Pectineus

  19. Pectineus • Actions: • Hip adduction • Hip flexion

  20. Six Deep Lateral Rotators

  21. Piriformis • Origin: • anterior sacrum • Insertion: • superior border of greater trochanter • Innervation: • sacral plexus (S1-2,L5)

  22. Piriformis

  23. Piriformis • Actions: • External rotation of hip • Hip abduction

  24. Gemellus Superior • Origin: • ischial spine • Insertion: • greater trochanter via obturator internus tendon) • Innervation: • sacral plexus (L5,S1,2)

  25. Gemellus Superior

  26. Gemellus Superior • Action: • External rotation of hip

  27. Obturator Internus • Origin: • margin of obturator foramen and obturator membrane • Insertion: • greater trochanter, medial surface • Innervation: • sacral plexus (L5,S1-2)

  28. Obturator Internus

  29. Obturator Internus • Actions: • External rotation of hip • Hip abduction

  30. Gemellus Inferior • Origin: • ischial tuberosity • Insertion: • greater trochanter (via obturator internus tendon) • Innervation: • sacral plexus (L4,5,S1)

  31. Gemellus Inferior

  32. Gemellus Inferior • Actions: • External rotation • Hip abduction

  33. Obturator Externus • Origin: • superior and inferior pubic rami, obturator foramen, obturator membrane • Insertion: • trochanteric fossa on medial side of greater trochanter • Innervation: • obturator nerve (L3,4)

  34. Obturator Externus

  35. Obturator Externus • Action: • External rotation of hip

  36. Quadratus Femoris • Origin: • ischial tuberosity, lateral border • Insertion: • quadrate line below intertrochanteric crest • Innervation: • sacral plexus (L4-5,S1)

  37. Quadratus Femoris

  38. Quadratus Femoris • Action: • External rotation of hip

  39. Psoas Major and Iliacus (Iliopsoas)

  40. Iliopsoas • Origin: • combination of iliacus (from iliac fossa) & psoas major (from lumbar vertebrae) • Insertion: • lesser trochanter of femur • Innervation: • femoral nerve (L1-3)

  41. Iliacus

  42. Iliacus

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