Gluteal region

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Gluteal region

  1. 1. Gluteal region Dr. Rania sherif Lecturer of Anatomy, Mansoura university
  2. 2. Deep fascia (fascia lata) Iliotibial tract Saphenous opening AttachmentSup: tubercle of iliac crest Inf: lat condyle of tibia
  3. 3. Muscles Gluteal ms Lat. hip rotatorsGluteus maximus PiriformisGluteus medius Quadratus femoris Obturator internus &Gluteus brevis externus Sup & inf gemellusTensor fascia lata
  4. 4. Gluteus medius GluteusPiriformis minimus Sup gemellus Inf gemellusObturator internus Quadratus femoris
  5. 5. Middle gluteal line minimusmaximus Inferior gluteal line Posteriorgluteal line
  6. 6. Gluteus maximumOrigin:Back of sacrum & coccyxBack of sacrotuberous ligamentGluteal surface behind postgluteal lineInsertion:Superficial ¾ into iliotibial tractDeep ¼ into gluteal tuberosityNS: inferior gluteal nAction:Extension of hip jointLateral rotation of thighHelp in extension of knee joint
  7. 7. Gluteus mediusOrigin:Gluteal surface () post & middlegluteal linesInsertion:Greater trochanter (lat surface)NS: superior gluteal nGluteus minimusOrigin:() middle & inferior gluteal linesInsertion:Greater trochanter (ant surface)NS: superior gluteal nAction:Abduction & med rotation of thighPrevent pelvic drop during walking
  8. 8. Superior gluteal n injury
  9. 9. Tensor fascia lataOrigin: iliac crest () ASIS &tubercleInsertion:Iliotibial tractNS: superior gluteal nAction:Tense iliotibial tractAbduction & med rotation of hip
  10. 10. Piriformis muscleOrigin:Middle 3 pieces of sacrum(ant)Insertion:Upper border of greatertrochanterNS: sacral plexus S1,2
  11. 11. Obturator externusOrigin:Obturator membrane(outer surface) & adjacentbonesInsertion:Trochanteric fossaNS: obturator nerve
  12. 12. Obturator internusOrigin:Obturator membrane (innersurface)Front & sides of pelvisInsertion:Medial surface of greatertrochanterNS: N to obturatorinternus
  13. 13. Superior gemellusOrigin:Lesser sciatic notch (upper)Insertion:Tendon of obturator internusNS: N to obturator internusInferior gemellusOrigin:Lesser sciatic notch (lower)Insertion:Tendon of obturator internusNS: N to quadratus femoris
  14. 14. Quadratus femorisOrigin:Ischeal tuberosity (latborder)Insertion:Quadrate tubercleNS: N to quadratusfemoris
  15. 15. Sacrotuberous ligamentAttachment:PSIS, PIISSide & back of sacrum & coccyxIscheal tuberosityRamus of ischiumFunction:Fix sacrum in oblique direction
  16. 16. Sacrospinous ligamentAttachment:Ischeal spineLat margin of sacrum & coccyx
  17. 17. Greater sciatic foramen Structures passing through it: Superior gluteal vs & nerve Piriformis ms Inferior gluteal vs & nerve Nerve to obturator internus Internal pudendal vs Pudendal n Sciatic n Post cutaneous n of thigh Nerve to quadratus femoris
  18. 18. Lesser sciatic foramenStructures passing through it:Tendon of obturator internusNerve to obturator internusInternal pudendal vsPudendal n
  19. 19. Sciatic nerveOrigin:Sacral plexus L4,5, S1,2,3Course:Greater sciatic foramen belowpiriformis muscleDeep to gluteus maximusMidpoint () ischial tuberosity andgreater trochanter.Branches:Tibial nerve (medial popliteal)Common peroneal nerve (lateralpopliteal)Distribution:Hamstring ms & adduct magnus(ischeal part)
  20. 20. Safe Area - Intramuscular Injection

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