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The Posterior Thigh
The thigh is divided into 2 physical
compartments divided by the
medial and lateral intermuscular septa
-Anterior compartm...
The Posterior Compartment of the thigh has
two functionally different sets of muscles
•The Adductors
•The Hamstrings
There...
In total the thigh is divided into
3 functional compartments
1. Anterior or Extensor compartment
1. Medial or Adductor com...
Skin
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
towards hip joint
Septa
SeptaSubcutaneous Fat
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh look...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
There are 5 muscles in the Adductor Compartment
There are 5 muscles in the Adductor Compartment
• Gracilis
There are 5 muscles in the Adductor Compartment
• Gracilis
• Adductor Longus
There are 5 muscles in the Adductor Compartment
• Gracilis
• Adductor Longus
• Adductor Brevis
There are 5 muscles in the Adductor Compartment
• Gracilis
• Adductor Longus
• Adductor Brevis
• Adductor Magnus
There are 5 muscles in the Adductor Compartment
• Gracilis
• Adductor Longus
• Adductor Brevis
• Adductor Magnus
• Pectine...
There are 5 muscles in the Adductor Compartment
• Gracilis
• Adductor Longus
• Adductor Brevis
• Adductor Magnus
• Pectine...
Gracilis
This is the most medial
muscle of the thigh
Anterior View
Gracilis
This is the most medial
muscle of the thigh
Anterior View
It originates from the
Pubis and Ischium of the Hip Bone
Gracilis
This is the most medial
muscle of the thigh
Anterior View
It originates from the
Pubis and Ischium of the Hip Bon...
Gracilis
This is the most medial
muscle of the thigh
Anterior View
It originates from the
Pubis and Ischium of the Hip Bon...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Adductor Longus
Anterior View
Originates from the Pubis
Inserts onto the shaft of the Femur
Proximally forms part of the floor
of the Femoral Triangle
Distally forms part of the floor of
the Adductor Canal
Adductor...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Adductor Magnus
Has two functional components
•Hamstring portion
•Adductor Portion
Anterior View
Adductor Magnus
The Adductor Portion
Originates from the ramus of the
•Pubis
•Ischium
Anterior View
Adductor Magnus
The Adductor Portion
Originates from the ramus of the
•Pubis
•Ischium
Inserts onto the Femur
•Linea Aspera...
Adductor Magnus
The Adductor Portion
Originates from the ramus of the
•Pubis
•Ischium
Inserts onto the Femur
•Linea Aspera...
Adductor Magnus
The Hamstring Portion
Originates from the Ischial Tuberosity
Inserts onto the Adductor Tubercle of
the Fem...
Adductor Magnus
As there are two functional parts,
these are supplied by two different
nerves
The Adductor Portion by the
...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Adductor Brevis
Anterior View
Originates from the Pubis of the Hip Bone
Attaches to the Linea Aspera of the Femur
Adductor Brevis
Anterior View
Originates from the Pubis of the Hip Bone
Attaches to the Linea Aspera of the Femur
Adducts ...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Pectineus
Originates from the Pubis of the Hip Bone
Inserts onto the Pectineal Line on the Femur
just below the Lesser Tro...
Pectineus
Originates from the pectineal surface of the
Hip Bone
Inserts onto the Pectineal Line on the Femur
just below th...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
The rest of the Posterior Compartment comprises 3 muscles
that are collectively known as the Hamstrings and these are
cove...
Femur
Septa
Septa
Thigh compartments
mediallateral
posterior
anterior
Cross section
through right
mid-thigh looking
toward...
Obturator Externus
Anterior View
Obturator Externus lies behind
Adductor Brevis and is deeply placed
It is not an adductor...
Obturator Externus
Anterior View
Originates from the outer surface of
Obturator Membrane and the adjacent
bony rim
Inserts...
Nerve Supply
All these muscles are
innervated by the same nerve
from the Lumbar Plexus
Obturator Nerve
Adductor Magnus has
a dual nerve supply
Adductor Portion
Obturator Nerve
Hamstring Portion
Tibial Component
Sciatic Nerve
...
Summary of Adductor Muscles
Pectineus
Origin Pectineal surface of the pubis
Insertion Pectineal line of femur below lesser
trochanter
Action Adducts t...
Gracilis
Origin Inferior ramus of pubis, and
adjacent ramus of ischium
Insertion Medial surface upper tibial shaft,
poster...
Adductor Brevis
Origin Inferior ramus and body of pubis
Insertion Upper third linea aspera of femur
Action Adducts and fle...
Adductor Longus
Origin Anterior surface of body of pubis,
just lateral to pubic symphysis
Insertion Middle third of linea ...
Adductor Magnus
Origin Adductor portion: Inferior pubic
ramus, ischial ramus
Hamstring portion: ischial tuberosity
Inserti...
Obturator Externus
Origin External surface of obturator
membrane and anterior bony
margins of obturator foramen
Insertion ...
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Slideshow: Posterior Thigh Adductors

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Slideshow: Posterior Thigh Adductors

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http://publishing.rcseng.ac.uk/journal/video?videoTaxonomy=FUNK

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Slideshow: Posterior Thigh Adductors

  1. 1. The Posterior Thigh
  2. 2. The thigh is divided into 2 physical compartments divided by the medial and lateral intermuscular septa -Anterior compartment -Posterior compartment
  3. 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. 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. 5. Skin Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint
  6. 6. Septa SeptaSubcutaneous Fat Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint
  7. 7. Femur Septa Septa Thigh compartments mediallateral posterior anterior Cross section through right mid-thigh looking towards hip joint
  8. 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. 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. 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. 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. 12. There are 5 muscles in the Adductor Compartment
  13. 13. There are 5 muscles in the Adductor Compartment • Gracilis
  14. 14. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus
  15. 15. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus • Adductor Brevis
  16. 16. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus • Adductor Brevis • Adductor Magnus
  17. 17. There are 5 muscles in the Adductor Compartment • Gracilis • Adductor Longus • Adductor Brevis • Adductor Magnus • Pectineus
  18. 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. 19. Gracilis This is the most medial muscle of the thigh Anterior View
  20. 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. 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. 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. 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. 24. Adductor Longus Anterior View Originates from the Pubis Inserts onto the shaft of the Femur
  25. 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. 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. 27. Adductor Magnus Has two functional components •Hamstring portion •Adductor Portion Anterior View
  28. 28. Adductor Magnus The Adductor Portion Originates from the ramus of the •Pubis •Ischium Anterior View
  29. 29. Adductor Magnus The Adductor Portion Originates from the ramus of the •Pubis •Ischium Inserts onto the Femur •Linea Aspera Anterior View
  30. 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. 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. 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. 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. 34. Adductor Brevis Anterior View Originates from the Pubis of the Hip Bone Attaches to the Linea Aspera of the Femur
  35. 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. 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. 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. 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. 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. 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. 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. 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. 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. 44. Nerve Supply
  45. 45. All these muscles are innervated by the same nerve from the Lumbar Plexus Obturator Nerve
  46. 46. Adductor Magnus has a dual nerve supply Adductor Portion Obturator Nerve Hamstring Portion Tibial Component Sciatic Nerve Posterior ViewAnterior View
  47. 47. Summary of Adductor Muscles
  48. 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. 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. 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. 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. 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. 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
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Slideshow: Posterior Thigh Adductors The Funky Professor videos can be viewed here; http://publishing.rcseng.ac.uk/journal/video?videoTaxonomy=FUNK

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