Hip, SI, and pelvic joints

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  1. Iliolumbar Ligament
    • TP L5 to iliac crest
    • Prevents: anterior translation of L5 on sacrum
  2. Anterior Sacroiliac Ligament
    • Covers entire front of SI joint
    • Prevents: anterior traslation of sacrum, rotation, separation of sacrum and ilium
  3. Posterior Sacroiliac Ligament
    • Covers entire back of SI joint
    • Prevents: posterior translation of sacrum, rotation, separation of sacrum and ilium
  4. Sacrotuberous Ligament
    • Sacrum to ischial tuberosity
    • Prevents: anterior rotation of sacrum
  5. Sacrospinous Ligament
    • Sacrum to ischial spine
    • Prevents: anterior rotation of sacrum
  6. Interosseus Sacroiliac Ligament
    • Between sacrum and ilia inside the SI joint
    • Fibers run superolaterally
    • Prevents: posterior translation of sacrum, separation, rotation, inferior translation of sacrum
    • Strongest ligament in body
  7. Muscles that support SI joint
    • Psoas major
    • Iliacus
    • Piriformis
    • Gluteus Maximus
    • Erector Spinae - anterior pelvic tilt
    • Multifidi - anterior pelvic tilt
    • Abdominal muscles - posterior pelvic tilt
    • Hamstrings - posterior pelvic tilt
  8. Angle of inclination of femur
    • Angle inf frontal plane between head/neck of femur and shaft
    • approx 125 degrees in normal adult
    • at birth approx 140 - 150 degrees
  9. Torsion Angle of Femur
    • Angle between transverse axis of femoral condyles and axis of femoral head and neck
    • Normally 10-15 degrees anteverted
  10. Iliofemoral Ligament of hip
    • "Y-ligament"
    • AIIS and anterior superior rim of acetabulum to intertrochanteric line
    • Strongest ligament of hip joint
    • Prevents: extension, external rotation (upper fibers)
  11. Pubofemoral Ligament of hip
    • Anterior inferior rim of acetabulum and superior pubic ramus to intertrochanteric line
    • Covers neck
    • Prevents: ABduction, external rotation, extension
  12. Ischiofemoral Ligament of hip
    • Posterior inferior rim of acetabulum to apex of greater trochanter
    • Covers neck in back
    • Prevents: Internal rotation, extension
  13. Position of best joint congruity of hip
    Flexed, externally rotated, ABducted
  14. Position of closed pack of hip
    Extended, internally rotated, ADducted

Card Set Information

Hip, SI, and pelvic joints
2012-02-27 12:56:57
Hip SI pelvic joints

Hip, SI, and pelvic joints
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