0
KIN 191A Advanced Assessment of Lower Extremity Injuries THE PELVIS AND THIGH ANATOMY
INTRODUCTION <ul><li>BONY ANATOMY </li></ul><ul><li>ARTICULATIONS AND LIGAMENTOUS ANATOMY </li></ul><ul><li>MUSCULAR ANATO...
BONY ANATOMY <ul><li>Anterior & lateral portion of the pelvic formed by two innominate bones </li></ul><ul><ul><li>Each co...
Pubis Ischium Ilium Articular  Surface
ASIS AIIS PIIS PSIS
Iliac Crest Iliac Tuberosity
Ischial Tuberosity Ischial Spine Ramos of Ischium
S. Ramos  of Pubis Ischium Ilium Pubic Tubercle  I. Ramos  of Pubis
<ul><li>Acetabulum </li></ul><ul><ul><li>Downwardly and outwardly directed depression </li></ul></ul><ul><ul><li>Accepts t...
<ul><ul><li>Ligamentum teres </li></ul></ul><ul><ul><ul><li>Centered within fossa </li></ul></ul></ul><ul><ul><li>Labrum <...
Rim of Acetabulum Acetabulum Notch Acetabulum Lunate Surface Acetabulum Fossa
<ul><li>A 180 degree arc in diameter </li></ul><ul><li>Thickly covered with hyaline cartilage </li></ul><ul><ul><li>Except...
 
<ul><li>Trochanters are the attachment sites for many of the pelvic and hip muscles </li></ul><ul><li>Greater trochanter <...
 
Median Sacral Crest Cornua Coccygeal Cornua Transverse Process Articular Surface Hiatus I. L.
Dorsal Sacrum Foramina Transverse Tubercles 1 st  Coccygeal Vertebra Fused 2 nd  -4 th  Vertebrae
ARTICULATIONS AND LIAGAMENTOUS ANATOMY <ul><li>Pubic symphysis </li></ul><ul><ul><li>Articulates anteriorly </li></ul></ul...
<ul><li>Sacroiliac (SI) joint </li></ul><ul><ul><li>Posteriorly, each ilium articulates with the sacrum </li></ul></ul><ul...
<ul><li>Originates from AIIS </li></ul><ul><li>One band inserting on the distal aspect of the anterior intertrochanter lin...
Iliofemoral Ligament Ingunial Ligament Pubofemoral Ligament Ischiofemoral Ligament Sacrotuberous  Ligament
Pubofemoral Ligament <ul><li>Emerging from the pubic ramus </li></ul><ul><li>Inserting on the anterior aspect of the inter...
Ischiofemoral Ligament <ul><li>Triangular ligament </li></ul><ul><li>From posterior acetabulum rim with upwardly spiraling...
Ingui n al Ligament <ul><li>Originates from ASIS </li></ul><ul><li>Inserts at the pubic symphysis </li></ul>
Ligamentum Teres <ul><li>Known as the “ligament of the head of the femur” </li></ul><ul><li>Serves as a conduit for the me...
Ischiofemoral L. Transverse Acetabulum Ligament Pubofemoral L. Iliofemoral L. Ligamentum Teres
MUSCULAR ANATOMY <ul><li>Anterior Musculature </li></ul><ul><li>Medial Musculature </li></ul><ul><li>Lateral Musculature <...
Anterior Musculature <ul><li>Quadriceps </li></ul><ul><ul><li>Rectus femoris </li></ul></ul><ul><ul><li>Vastus medialis, l...
Rectus Femoris <ul><li>O:  AIIS </li></ul><ul><li>I:  Tibial tuberosity  via infrapatellar  tendon </li></ul><ul><li>N:  F...
Vasti Muscles <ul><li>O:  VL –  Greater trochanter,    lateral lip of linea   aspera    </li></ul><ul><ul><li>VI –  Antero...
Sartorius <ul><li>O:  ASIS </li></ul><ul><li>I:  Anteromedial tibial  flare (pes anserine) </li></ul><ul><li>N:  Femoral <...
Iliopsoas <ul><li>Iliacus </li></ul><ul><ul><li>O:  I liac   fossa/crest </li></ul></ul><ul><ul><li>I:  L esser trochanter...
Medial Musculature <ul><li>Pectineus </li></ul><ul><li>Adductor longus </li></ul><ul><li>Gracilis </li></ul><ul><li>Adduct...
Pectineus <ul><li>O:  S uperior pubic  symphysis </li></ul><ul><li>I:  P ectineal line of femur </li></ul><ul><li>N:  O bt...
Adductor Longus <ul><li>O:  P ubic symphysis </li></ul><ul><li>I:  M edial 1/3 of linea  aspera </li></ul><ul><li>N:  O bt...
Gracilis <ul><li>O:  Anterior body of pubis </li></ul><ul><li>I:  Pes anserine tendon </li></ul><ul><li>N:  O bturator </l...
Adductor Brevis <ul><li>O:  P ubic ramus </li></ul><ul><li>I:  Proximal 1/3  linea aspera </li></ul><ul><li>N:  O bturator...
Adductor Magnus <ul><li>O:  I nferior pubic ramus, is c hical  ramus, ischial tuberosity </li></ul><ul><li>I:  G luteal tu...
Lateral Musculature <ul><li>Tensor fascia latae </li></ul><ul><li>Gluteus medius/minimus </li></ul><ul><li>External rotato...
Tensor Fascia Latae (TFL) <ul><li>O:  S uperior ilium  posterolaterally </li></ul><ul><li>I:  G reater trochanter </li></u...
Gluteus Medius <ul><li>O:  S uperior ilium  posterolaterally </li></ul><ul><li>I:  G reater trochanter </li></ul><ul><li>N...
Gluteus Minimus <ul><li>O:  L ower portion of ilium </li></ul><ul><li>I:  G reater trochanter </li></ul><ul><li>N:  S uper...
External Hip Rotators <ul><li>Piriformis   </li></ul><ul><li>Superior  Gemellus </li></ul><ul><li>Obturator internus </li>...
Posterior Musculature <ul><li>Gluteus maximus </li></ul><ul><li>Hamstrings </li></ul><ul><ul><li>Biceps femoris </li></ul>...
Gluteus Maximus <ul><li>O:  P osterior ilium,   sacrum and  coccyx </li></ul><ul><li>I:  G luteal tuberosity of femur </li...
 
 
 
 
BURSAE <ul><li>Trochanteric bursa </li></ul><ul><ul><li>Gluteus maximus passes over the greater trochanter </li></ul></ul>...
VASCULAR/NEURO ANATOMY
Femoral Triangle <ul><li>Borders </li></ul><ul><ul><li>Superiorly – inguinal ligament </li></ul></ul><ul><ul><li>Laterally...
Femoral Triangle
Femoral Artery <ul><li>Has deep branch of the femoral artery </li></ul><ul><li>Terminates at popliteal fossa as popliteal ...
Dermatomes and Myotomes <ul><li>L1 </li></ul><ul><ul><li>Dermatome: Back, greater trochanter and groin </li></ul></ul><ul>...
Obturator Nerve <ul><li>Dermoatome: None (m edial thigh) </li></ul><ul><li>M yotome:     H ip adduction </li></ul>
Superior/Inferior   Gluteal  Nerve s <ul><li>Superior Gluteal Nerve </li></ul><ul><ul><li>Dermatome: None </li></ul></ul><...
Additional  Neuroanatomy <ul><li>Lumbar plexus </li></ul><ul><li>Sacral plexus </li></ul><ul><li>Nerve roots named for spi...
Lumbar Plexus <ul><li>Primarily arises from L2, L3, L4 nerve roots </li></ul><ul><li>Posterior (dorsal) branches combine t...
Lumbar Plexus
Sacral Plexus <ul><li>Primarily arises from anterior branches of L4 and L5 as well as S1 through S3 </li></ul><ul><li>Ante...
Sacral Plexus <ul><li>Posterior (dorsal) branches of L4-S1 combine to form superior gluteal nerve </li></ul><ul><ul><li>Su...
Sacral Plexus
Upcoming SlideShare
Loading in...5
×

Kin191 A. Ch.8. Pelvis. Thigh. Anatomy

2,706

Published on

0 Comments
3 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
2,706
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
135
Comments
0
Likes
3
Embeds 0
No embeds

No notes for slide

Transcript of "Kin191 A. Ch.8. Pelvis. Thigh. Anatomy"

  1. 1. KIN 191A Advanced Assessment of Lower Extremity Injuries THE PELVIS AND THIGH ANATOMY
  2. 2. INTRODUCTION <ul><li>BONY ANATOMY </li></ul><ul><li>ARTICULATIONS AND LIGAMENTOUS ANATOMY </li></ul><ul><li>MUSCULAR ANATOMY </li></ul><ul><li>BURSAES </li></ul><ul><li>VASCULAR/NEURO ANATOMY </li></ul>
  3. 3. BONY ANATOMY <ul><li>Anterior & lateral portion of the pelvic formed by two innominate bones </li></ul><ul><ul><li>Each consisting of </li></ul></ul><ul><ul><ul><li>Ilium </li></ul></ul></ul><ul><ul><ul><li>Ischium </li></ul></ul></ul><ul><ul><ul><li>Pubis </li></ul></ul></ul><ul><li>Posterior junction of the pelvis girdle is formed by the sacrum </li></ul><ul><ul><li>Fixates the spinal column to the pelvis </li></ul></ul><ul><ul><li>Sacrum (4~5 fused segments) </li></ul></ul>
  4. 4. Pubis Ischium Ilium Articular Surface
  5. 5. ASIS AIIS PIIS PSIS
  6. 6. Iliac Crest Iliac Tuberosity
  7. 7. Ischial Tuberosity Ischial Spine Ramos of Ischium
  8. 8. S. Ramos of Pubis Ischium Ilium Pubic Tubercle I. Ramos of Pubis
  9. 9. <ul><li>Acetabulum </li></ul><ul><ul><li>Downwardly and outwardly directed depression </li></ul></ul><ul><ul><li>Accepts the femoral head within its fossa </li></ul></ul><ul><ul><li>Superior wall (ilium) </li></ul></ul><ul><ul><li>Inferior wall (ischium) </li></ul></ul><ul><ul><li>Internal, medial wall (pubis) </li></ul></ul>Lateral Aspect of the Pelvic
  10. 10. <ul><ul><li>Ligamentum teres </li></ul></ul><ul><ul><ul><li>Centered within fossa </li></ul></ul></ul><ul><ul><li>Labrum </li></ul></ul><ul><ul><ul><li>A thick ring of fibrocartilage </li></ul></ul></ul><ul><ul><ul><li>Lines the outer rim of the acetabulum </li></ul></ul></ul><ul><ul><ul><li>Deepens the articular area </li></ul></ul></ul><ul><ul><ul><li>Thicker and stronger superiorly than inferiorly </li></ul></ul></ul>
  11. 11. Rim of Acetabulum Acetabulum Notch Acetabulum Lunate Surface Acetabulum Fossa
  12. 12. <ul><li>A 180 degree arc in diameter </li></ul><ul><li>Thickly covered with hyaline cartilage </li></ul><ul><ul><li>Except a central depression that accepts the ligamentum teres </li></ul></ul><ul><li>Connected to the femur’s shaft by the femoral neck </li></ul><ul><li>Frontal plane: angled at approximately 125˚ </li></ul><ul><ul><li>Known as the “angle of inclination” </li></ul></ul><ul><ul><li>Slightly decreased in women </li></ul></ul><ul><li>Transverse plane: between femoral head and shaft is the “angle of torsion” </li></ul><ul><ul><li>Normally 15˚ </li></ul></ul>Femoral Head
  13. 14. <ul><li>Trochanters are the attachment sites for many of the pelvic and hip muscles </li></ul><ul><li>Greater trochanter </li></ul><ul><ul><li>Projects laterally </li></ul></ul><ul><li>Lesser trochanter </li></ul><ul><ul><li>Projects medially </li></ul></ul>
  14. 16. Median Sacral Crest Cornua Coccygeal Cornua Transverse Process Articular Surface Hiatus I. L.
  15. 17. Dorsal Sacrum Foramina Transverse Tubercles 1 st Coccygeal Vertebra Fused 2 nd -4 th Vertebrae
  16. 18. ARTICULATIONS AND LIAGAMENTOUS ANATOMY <ul><li>Pubic symphysis </li></ul><ul><ul><li>Articulates anteriorly </li></ul></ul><ul><ul><li>Relatively immobile joint </li></ul></ul><ul><ul><li>Fibrocartilaginous interpubic disk </li></ul></ul><ul><ul><li>Subtle distraction, compression, rotation motion </li></ul></ul><ul><li>Coxofemoral joint </li></ul><ul><ul><li>Ball-and-socket joint </li></ul></ul><ul><ul><li>3 degrees of freedom </li></ul></ul>
  17. 19. <ul><li>Sacroiliac (SI) joint </li></ul><ul><ul><li>Posteriorly, each ilium articulates with the sacrum </li></ul></ul><ul><ul><li>Very strong joint with limited mobility – irregular shapes contribute to stability </li></ul></ul><ul><ul><li>Anterior (ventral) and posterior (dorsal) sacroiliac ligaments </li></ul></ul><ul><ul><li>Sacrotuberous ligament – sacrum to ischial tuberosity </li></ul></ul><ul><ul><li>Sacrospinous ligament – ischial spine to sacrum/coccyx </li></ul></ul>
  18. 20. <ul><li>Originates from AIIS </li></ul><ul><li>One band inserting on the distal aspect of the anterior intertrochanter line </li></ul><ul><li>Other band inserting on the proximal aspect of the anterior intertrochanter line and the femoral neck </li></ul><ul><li>Limiting hyperextension </li></ul><ul><li>Superior fibers (limits adduction) </li></ul><ul><li>Inferior fibers (limits abduction) </li></ul>Iliofemoral Ligament (Y ligament of bigelow)
  19. 21. Iliofemoral Ligament Ingunial Ligament Pubofemoral Ligament Ischiofemoral Ligament Sacrotuberous Ligament
  20. 22. Pubofemoral Ligament <ul><li>Emerging from the pubic ramus </li></ul><ul><li>Inserting on the anterior aspect of the intertrochanteric fossa </li></ul><ul><li>Limits </li></ul><ul><ul><li>Abduction </li></ul></ul><ul><ul><li>hyperextension </li></ul></ul>
  21. 23. Ischiofemoral Ligament <ul><li>Triangular ligament </li></ul><ul><li>From posterior acetabulum rim with upwardly spiraling fibers attaching to the joint capsule and the inner surface of the greater trochanter </li></ul><ul><li>Limits </li></ul><ul><ul><li>Extension </li></ul></ul>
  22. 24. Ingui n al Ligament <ul><li>Originates from ASIS </li></ul><ul><li>Inserts at the pubic symphysis </li></ul>
  23. 25. Ligamentum Teres <ul><li>Known as the “ligament of the head of the femur” </li></ul><ul><li>Serves as a conduit for the medial and lateral circumflex arteries </li></ul>
  24. 26. Ischiofemoral L. Transverse Acetabulum Ligament Pubofemoral L. Iliofemoral L. Ligamentum Teres
  25. 27. MUSCULAR ANATOMY <ul><li>Anterior Musculature </li></ul><ul><li>Medial Musculature </li></ul><ul><li>Lateral Musculature </li></ul><ul><li>Posterior musculature </li></ul>
  26. 28. Anterior Musculature <ul><li>Quadriceps </li></ul><ul><ul><li>Rectus femoris </li></ul></ul><ul><ul><li>Vastus medialis, lateralis, intermedius </li></ul></ul><ul><li>Sartorius </li></ul><ul><li>Iliopsoas </li></ul><ul><ul><li>Iliacus </li></ul></ul><ul><ul><li>Psoas major/minor </li></ul></ul>
  27. 29. Rectus Femoris <ul><li>O: AIIS </li></ul><ul><li>I: Tibial tuberosity via infrapatellar tendon </li></ul><ul><li>N: Femoral </li></ul><ul><li>A: Knee extension, hip flexion </li></ul>
  28. 30. Vasti Muscles <ul><li>O: VL – Greater trochanter, lateral lip of linea aspera </li></ul><ul><ul><li>VI – Anterolateral upper 2/3 of femur, lateral lip of linea aspera </li></ul></ul><ul><ul><li>VM – Distal intertrochanteric line, medial lip of linea aspera </li></ul></ul><ul><li>I: Tibial tuberosity via infrapatellar tendon </li></ul><ul><li>N: Femoral </li></ul><ul><li>A: Knee extension </li></ul>
  29. 31. Sartorius <ul><li>O: ASIS </li></ul><ul><li>I: Anteromedial tibial flare (pes anserine) </li></ul><ul><li>N: Femoral </li></ul><ul><li>A: Hip flexion, </li></ul><ul><li>Hip abduction, </li></ul><ul><li>Hip external rotation </li></ul><ul><li>Knee flexion </li></ul>
  30. 32. Iliopsoas <ul><li>Iliacus </li></ul><ul><ul><li>O: I liac fossa/crest </li></ul></ul><ul><ul><li>I: L esser trochanter </li></ul></ul><ul><ul><li>N: L1-L4 </li></ul></ul><ul><ul><li>A: Hip flexion, lateral rotation </li></ul></ul><ul><li>Psoas major/minor </li></ul><ul><ul><li>O: T ransverse processes T12-L5 /T12-L1 </li></ul></ul><ul><ul><li>I: L esser trochanter /Pectineal line of the pubis </li></ul></ul><ul><ul><li>N: L1-L4 </li></ul></ul><ul><ul><li>A: Hip flexion, lateral rotation </li></ul></ul><ul><ul><li>Anterior pelvic tilt/Posterior pelvic tilt </li></ul></ul>
  31. 33. Medial Musculature <ul><li>Pectineus </li></ul><ul><li>Adductor longus </li></ul><ul><li>Gracilis </li></ul><ul><li>Adductor brevis (deep to adductor longus) </li></ul><ul><li>Adductor magnus (deepest) </li></ul>
  32. 34. Pectineus <ul><li>O: S uperior pubic symphysis </li></ul><ul><li>I: P ectineal line of femur </li></ul><ul><li>N: O bturator </li></ul><ul><li>A: Hip adduction, flexion </li></ul><ul><ul><li>Anterior pelvic tilt </li></ul></ul>
  33. 35. Adductor Longus <ul><li>O: P ubic symphysis </li></ul><ul><li>I: M edial 1/3 of linea aspera </li></ul><ul><li>N: O bturator </li></ul><ul><li>A: Hip adduction, flexion </li></ul><ul><ul><li>Anterior pelvic tilt </li></ul></ul>
  34. 36. Gracilis <ul><li>O: Anterior body of pubis </li></ul><ul><li>I: Pes anserine tendon </li></ul><ul><li>N: O bturator </li></ul><ul><li>A: Hip adduction, flexion </li></ul><ul><ul><li>Knee flexion </li></ul></ul><ul><ul><li>Anterior pelvic tilt </li></ul></ul>
  35. 37. Adductor Brevis <ul><li>O: P ubic ramus </li></ul><ul><li>I: Proximal 1/3 linea aspera </li></ul><ul><li>N: O bturator </li></ul><ul><li>A: Hip adduction, flexion </li></ul><ul><li>Anterior pelvic tilt </li></ul>
  36. 38. Adductor Magnus <ul><li>O: I nferior pubic ramus, is c hical ramus, ischial tuberosity </li></ul><ul><li>I: G luteal tuberosity to adductor tubercle </li></ul><ul><li>N: O bturator, tibial and common peroneal </li></ul><ul><li>A: Hip adduction, extension </li></ul><ul><li>Posterior pelvic tilt </li></ul>
  37. 39. Lateral Musculature <ul><li>Tensor fascia latae </li></ul><ul><li>Gluteus medius/minimus </li></ul><ul><li>External rotators (superior to inferior) </li></ul><ul><ul><li>Piriformis </li></ul></ul><ul><ul><li>Superior Gemellus </li></ul></ul><ul><ul><li>Obturator internus </li></ul></ul><ul><ul><li>Inferior Gemellus </li></ul></ul><ul><ul><li>Obturator externus </li></ul></ul><ul><ul><li>Quadratus femoris </li></ul></ul>
  38. 40. Tensor Fascia Latae (TFL) <ul><li>O: S uperior ilium posterolaterally </li></ul><ul><li>I: G reater trochanter </li></ul><ul><li>N: S uperior gluteal </li></ul><ul><li>A: Hip flexion, abduction, medial rotation </li></ul><ul><ul><li>Anterior pelvic tilt </li></ul></ul>
  39. 41. Gluteus Medius <ul><li>O: S uperior ilium posterolaterally </li></ul><ul><li>I: G reater trochanter </li></ul><ul><li>N: S uperior gluteal </li></ul><ul><li>A: Hip abduction </li></ul>
  40. 42. Gluteus Minimus <ul><li>O: L ower portion of ilium </li></ul><ul><li>I: G reater trochanter </li></ul><ul><li>N: S uperior gluteal </li></ul><ul><li>A: Hip abduction </li></ul>
  41. 43. External Hip Rotators <ul><li>Piriformis </li></ul><ul><li>Superior Gemellus </li></ul><ul><li>Obturator internus </li></ul><ul><li>Inferior Gemellus </li></ul><ul><li>Obturator externus </li></ul><ul><li>Quadratus femoris </li></ul>
  42. 44. Posterior Musculature <ul><li>Gluteus maximus </li></ul><ul><li>Hamstrings </li></ul><ul><ul><li>Biceps femoris </li></ul></ul><ul><ul><li>Semimembranosus </li></ul></ul><ul><ul><li>Semitendinosus </li></ul></ul>
  43. 45. Gluteus Maximus <ul><li>O: P osterior ilium, sacrum and coccyx </li></ul><ul><li>I: G luteal tuberosity of femur </li></ul><ul><li>N: I nferior gluteal </li></ul><ul><li>A: Hip extension, lateral rotation </li></ul><ul><ul><li>Hip abduction (upper 1/3) </li></ul></ul><ul><ul><li>Hip addction (lower 2/3) </li></ul></ul>
  44. 50. BURSAE <ul><li>Trochanteric bursa </li></ul><ul><ul><li>Gluteus maximus passes over the greater trochanter </li></ul></ul><ul><li>Gluteofemoral bursa </li></ul><ul><ul><li>Separates the gluteus maximus from the origin of the vastus lateralis </li></ul></ul><ul><li>Ischial bursa </li></ul><ul><ul><li>Serves as a weight bearing structure when seated, cushioning the ischial tuberosity </li></ul></ul>
  45. 51. VASCULAR/NEURO ANATOMY
  46. 52. Femoral Triangle <ul><li>Borders </li></ul><ul><ul><li>Superiorly – inguinal ligament </li></ul></ul><ul><ul><li>Laterally – sartorius </li></ul></ul><ul><ul><li>Medially – adductor longus </li></ul></ul><ul><li>Contents </li></ul><ul><ul><li>NAVEL (lateral to medial) </li></ul></ul><ul><ul><li>Femoral Nerve, Artery, Vein, ( E mpty space), L ymphatic channel </li></ul></ul>
  47. 53. Femoral Triangle
  48. 54. Femoral Artery <ul><li>Has deep branch of the femoral artery </li></ul><ul><li>Terminates at popliteal fossa as popliteal artery </li></ul>
  49. 55. Dermatomes and Myotomes <ul><li>L1 </li></ul><ul><ul><li>Dermatome: Back, greater trochanter and groin </li></ul></ul><ul><ul><li>Myotome: hip flexion </li></ul></ul><ul><li>L2: </li></ul><ul><ul><li>Dermatome: Back, anterior superior thigh </li></ul></ul><ul><ul><li>Myotome: hip flexion & adduction </li></ul></ul><ul><li>L3 </li></ul><ul><ul><li>Dermatome: Anterior medial thigh,back, upper gluteal </li></ul></ul><ul><ul><li>Myotome: Knee extension </li></ul></ul>
  50. 56. Obturator Nerve <ul><li>Dermoatome: None (m edial thigh) </li></ul><ul><li>M yotome: H ip adduction </li></ul>
  51. 57. Superior/Inferior Gluteal Nerve s <ul><li>Superior Gluteal Nerve </li></ul><ul><ul><li>Dermatome: None </li></ul></ul><ul><ul><li>M yotome: H ip a b duction </li></ul></ul><ul><li>Inferior Gluteal Nerve </li></ul><ul><ul><li>Dermatome: None </li></ul></ul><ul><ul><li>M yotome: H ip extension </li></ul></ul>
  52. 58. Additional Neuroanatomy <ul><li>Lumbar plexus </li></ul><ul><li>Sacral plexus </li></ul><ul><li>Nerve roots named for spinal segment superior to corresponding nerve root level </li></ul><ul><ul><li>L4 nerve root exits spinal column below 4 th lumbar vertebrae </li></ul></ul>
  53. 59. Lumbar Plexus <ul><li>Primarily arises from L2, L3, L4 nerve roots </li></ul><ul><li>Posterior (dorsal) branches combine to form femoral nerve </li></ul><ul><ul><li>Femoral nerve – posterior division of L2-L4 </li></ul></ul><ul><li>Anterior (ventral) branches combine to form obturator nerve </li></ul><ul><ul><li>Obturator nerve – anterior division of L2-L4 </li></ul></ul>
  54. 60. Lumbar Plexus
  55. 61. Sacral Plexus <ul><li>Primarily arises from anterior branches of L4 and L5 as well as S1 through S3 </li></ul><ul><li>Anterior (ventral) branches of L4-S3 combine to form tibial nerve </li></ul><ul><ul><li>Tibial nerve – anterior division of L4-S3 </li></ul></ul><ul><li>Posterior (dorsal) branches of L4-S2 combine to form common peroneal nerve </li></ul><ul><ul><li>Common peroneal nerve – posterior division of L4-S2 </li></ul></ul>
  56. 62. Sacral Plexus <ul><li>Posterior (dorsal) branches of L4-S1 combine to form superior gluteal nerve </li></ul><ul><ul><li>Superior gluteal nerve – posterior division of </li></ul></ul><ul><ul><li>L4-S1 </li></ul></ul><ul><li>Posterior (dorsal) branches of L5-S2 combine to form inferior gluteal nerve </li></ul><ul><ul><li>Inferior gluteal nerve – posterior division of </li></ul></ul><ul><ul><li>L5-S2 </li></ul></ul>
  57. 63. Sacral Plexus
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×