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Unraveling the Intricacies of the Pelvic Girdle: Structure, Function, and Common Injuries

Dive into the detailed anatomy, functions, and potential injuries of the pelvic girdle, including the hip joint, muscular considerations, and kinematics. Understand how structural factors influence girdle function and explore specific functional considerations and movements like flexion, extension, and rotation.

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Unraveling the Intricacies of the Pelvic Girdle: Structure, Function, and Common Injuries

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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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