Slideshow: Posterior Thigh Adductors
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Slideshow: Posterior Thigh Adductors
- 2. The thigh is divided into 2 physical compartments divided by the medial and lateral intermuscular septa -Anterior compartment -Posterior compartment
- 3. The Posterior Compartment of the thigh has two functionally different sets of muscles •The Adductors •The Hamstrings There is no distinct fascial boundary between the two groups
- 4. In total the thigh is divided into 3 functional compartments 1. Anterior or Extensor compartment 1. Medial or Adductor compartment 1. Posterior or Flexor compartment
- 5. Skin Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint
- 6. Septa SeptaSubcutaneous Fat Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint
- 7. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint
- 8. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint medial intermuscular septum lateral intermuscular septum
- 9. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment
- 10. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Adductor Compartment
- 11. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Adductor Compartment Hamstring Compartment
- 12. There are 5 muscles in the Adductor Compartment
- 13. There are 5 muscles in the Adductor Compartment • Gracilis
- 14. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus
- 15. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus • Adductor Brevis
- 16. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus • Adductor Brevis • Adductor Magnus
- 17. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus • Adductor Brevis • Adductor Magnus • Pectineus
- 18. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus • Adductor Brevis • Adductor Magnus • Pectineus (Obturator Externus is a curious little muscle which occupies both the Adductor Compartment and the Gluteal Region)
- 19. Gracilis This is the most medial muscle of the thigh Anterior View
- 20. Gracilis This is the most medial muscle of the thigh Anterior View It originates from the Pubis and Ischium of the Hip Bone
- 21. Gracilis This is the most medial muscle of the thigh Anterior View It originates from the Pubis and Ischium of the Hip Bone It inserts onto the upper part of the Tibia on the medial aspect
- 22. Gracilis This is the most medial muscle of the thigh Anterior View It originates from the Pubis and Ischium of the Hip Bone It inserts onto the upper part of the Tibia on the medial aspect It adducts the hip and flexes the knee
- 23. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Hamstring Compartment GracilisGracilis
- 24. Adductor Longus Anterior View Originates from the Pubis Inserts onto the shaft of the Femur
- 25. Proximally forms part of the floor of the Femoral Triangle Distally forms part of the floor of the Adductor Canal Adductor Longus Anterior View
- 26. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Hamstring Compartment AdductorAdductor LongusLongus
- 27. Adductor Magnus Has two functional components •Hamstring portion •Adductor Portion Anterior View
- 28. Adductor Magnus The Adductor Portion Originates from the ramus of the •Pubis •Ischium Anterior View
- 29. Adductor Magnus The Adductor Portion Originates from the ramus of the •Pubis •Ischium Inserts onto the Femur •Linea Aspera Anterior View
- 30. Adductor Magnus The Adductor Portion Originates from the ramus of the •Pubis •Ischium Inserts onto the Femur •Linea Aspera Anterior View Adducts and Medially Rotates the Hip
- 31. Adductor Magnus The Hamstring Portion Originates from the Ischial Tuberosity Inserts onto the Adductor Tubercle of the Femur Extends the Hip Anterior View
- 32. Adductor Magnus As there are two functional parts, these are supplied by two different nerves The Adductor Portion by the Obturator Nerve The Hamstring Portion by the Tibial Component of the Sciatic Nerve Anterior View
- 33. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Hamstring Compartment Adductor MagnusAdductor Magnus
- 34. Adductor Brevis Anterior View Originates from the Pubis of the Hip Bone Attaches to the Linea Aspera of the Femur
- 35. Adductor Brevis Anterior View Originates from the Pubis of the Hip Bone Attaches to the Linea Aspera of the Femur Adducts and flexes the Hip Joint
- 36. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Hamstring Compartment Adductor BrevisAdductor Brevis
- 37. Pectineus Originates from the Pubis of the Hip Bone Inserts onto the Pectineal Line on the Femur just below the Lesser Trochanter Anterior View
- 38. Pectineus Originates from the pectineal surface of the Hip Bone Inserts onto the Pectineal Line on the Femur just below the Lesser Trochanter Adducts and Flexes the Hip Joint Anterior View (Not seen on the cross-section diagram as it is placed more superiorly)
- 39. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Hamstring Compartment Adductor MagnusAdductor Magnus Adductor BrevisAdductor Brevis AdductorAdductor LongusLongus GracilisGracilis
- 40. The rest of the Posterior Compartment comprises 3 muscles that are collectively known as the Hamstrings and these are covered in another topic (Posterior Thigh – The Hamstrings) • Semimembranosus • Semitendinosus • Biceps Femoris
- 41. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint Anterior / Extensor compartment Anterior Compartment Adductor MagnusAdductor Magnus Adductor BrevisAdductor Brevis AdductorAdductor LongusLongus GracilisGracilisBicepsBiceps FemorisFemoris Short HeadShort Head BicepsBiceps FemorisFemoris Long HeadLong Head SemitendinosusSemitendinosus SemimembranosusSemimembranosus
- 42. Obturator Externus Anterior View Obturator Externus lies behind Adductor Brevis and is deeply placed It is not an adductor muscle, but a weak External Rotator of the Hip Joint
- 43. Obturator Externus Anterior View Originates from the outer surface of Obturator Membrane and the adjacent bony rim Inserts onto the medial surface of the Greater Trochanter of the Femur
- 44. Nerve Supply
- 45. All these muscles are innervated by the same nerve from the Lumbar Plexus Obturator Nerve
- 46. Adductor Magnus has a dual nerve supply Adductor Portion Obturator Nerve Hamstring Portion Tibial Component Sciatic Nerve Posterior ViewAnterior View
- 47. Summary of Adductor Muscles
- 48. Pectineus Origin Pectineal surface of the pubis Insertion Pectineal line of femur below lesser trochanter Action Adducts the thigh, flexes hip joint Nerve Supply Femoral nerve,some innervation from the obturator nerve (L2, L3, L4) Blood Supply Medial circumflex femoral branch of femoral artery and obturator artery
- 49. Gracilis Origin Inferior ramus of pubis, and adjacent ramus of ischium Insertion Medial surface upper tibial shaft, posterior to sartorius Action Adducts hip, flexes the knee, medially rotates tibia on femur Nerve Supply Anterior division obturator nerve (L2, L3) Blood Supply Obturator artery, medial circumflex femoral artery, profunda femoris artery
- 50. Adductor Brevis Origin Inferior ramus and body of pubis Insertion Upper third linea aspera of femur Action Adducts and flexes hip joint Nerve Supply Anterior division obturator nerve (L2, L3, L4) Blood Supply Medial circumflex femoral branch of femoral artery and obturator artery
- 51. Adductor Longus Origin Anterior surface of body of pubis, just lateral to pubic symphysis Insertion Middle third of linea aspera, between the more lateral adductor magnus and brevis insertions and the more medial origin of the vastus medialis Action Adducts, flexes and medially rotates the hip joint Nerve Supply Anterior division of obturator nerve (L2, L3, L4) Blood Supply Obturator artery and medial circumflex femoral artery
- 52. Adductor Magnus Origin Adductor portion: Inferior pubic ramus, ischial ramus Hamstring portion: ischial tuberosity Insertion Adductor portion: Linea aspera and medial supracondylar ridge Hamstring portion: adductor tubercle Action Adductor portion:adducts and medially rotates hip Hamstring portion: extends hip Nerve Supply Adductor portion: Posterior division of obturator nerve (L2-4) Hamstring portion: tibial nerve portion of sciatic nerve (L4-S3) Blood Supply Medial circumflex femoral artery, inferior gluteal artery, 1st - 4th perforating arteries, obturator artery, popliteal artery
- 53. Obturator Externus Origin External surface of obturator membrane and anterior bony margins of obturator foramen Insertion Medial surface of greater trochanter of femur Action Laterally rotates hip; adducts thigh Nerve Supply Posterior division of obturator nerve L2, 3, 4 Blood Supply Obturator and medial circumflex femoral arteries