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The Pelvic Girdle

The Pelvic Girdle . The Pelvic Girdle. General Structure & Function Structure & Function of Specific Joints Muscular Considerations Specific Functional Considerations Common Injuries. The Hip and Pelvic Girdle. General Structure & Function Structure & Function of Specific Joints

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The Pelvic Girdle

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  1. The Pelvic Girdle

  2. The Pelvic Girdle • General Structure & Function • Structure & Function of Specific Joints • Muscular Considerations • Specific Functional Considerations • Common Injuries

  3. The Hip and Pelvic Girdle • General Structure & Function • Structure & Function of Specific Joints • Muscular Considerations • Specific Functional Considerations • Common Injuries

  4. General Structure: Pelvic Girdle • L/R Pelvic Bones • Fusion of: ilium, pubis, ischium • 3 Joints: pubic symphysis, 2 sacroiliac

  5. General Structure: The Hip Joint • Hip Joint: union of acetabulum of pelvis and head of femur • Stable joint, great mobility • Surrounded by several large muscles

  6. Structural Factors that Affect Girdle Function: Angle of Inclination • Larger at birth, decreases with age…why? • Hip abductors? • Length of limb? • Compression vs. Shear?

  7. Structural Factors that Affect Girdle Function: Angle of Anteversion • Angle of anteversion • Gluteus Maximus…ext. rotation?

  8. General Function • To provide stability for weight bearing • To allow for mobility of the leg • Load transmission

  9. Movements of the Hip Joint • Flexion and Extension • Abduction and Adduction • External Rotation and Internal Rotation.

  10. Kinematics of the Hip Joint • Femoral-on-Pelvic Osteokinematics • Pelvic-on-Femoral Osteokinematics

  11. Kinematics of the Hip Joint Femoral-on-Pelvic Osteokinematics: • Flexion and Extension in Sagittal Plane

  12. Kinematics of the Hip Joint Femoral-on-Pelvic Osteokinematics: • Abduction and Adduction in the Frontal Plane

  13. Kinematics of the Hip Joint Femoral-on-Pelvic Osteokinematics: • Internal and External Rotation in the Horizontal Plane

  14. Kinematics of the Hip JointPelvic-on-Femoral Osteokinematics: • Flexion and Extension in Sagittal Plane

  15. Kinematics of the Hip JointPelvic-on-Femoral Osteokinematics: • Abduction and Adduction in the Frontal Plane • Right lateral tilt and left lateral tilt

  16. Kinematics of the Hip JointPelvic-on-Femoral Osteokinematics: • Internal and External Rotation in the Horizontal Plane • Right rotation and left rotation

  17. The Hip and Pelvic Girdle • General Structure & Function • Structure & Function of Specific Joints • Muscular Considerations • Specific Functional Considerations • Common Injuries

  18. Muscular Considerations: Sagittal Plane Pelvic Motion • Pelvic-on-Femoral Flexion: Anterior Pelvic Tilt • Force couple • Hip flexors • Lower trunk extensors

  19. Muscular Considerations: Sagittal Plane Pelvic Motion • Pelvic-on-Femoral Flexion: Posterior Pelvic Tilt • Force couple • Hip extensors • Lower trunk flexors

  20. Muscular Considerations: Overall Function of the Hip Flexors 2. Femoral-on-Pelvic Hip Flexion • synergy between hip flexors and abdominal muscles

  21. Muscular Considerations: Extensors Pelvic-on-Femoral Hip Extension

  22. Muscular Considerations: Hip Adductors • Hip Adduction • Pelvic Action? • Muscles being utilized?

  23. The Hip and Pelvic Girdle • General Structure & Function • Structure & Function of Specific Joints • Muscular Considerations • Specific Functional Considerations • Common Injuries

  24. Specific Functional Considerations • Bilateral hip motion in sagittal plane • Unilateral hip motion if sagittal plane • Single-leg stance • Walking • Running • Untrained

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