1 / 11

Understanding Hip Joint Biomechanics: Gender Differences and Pelvic Positions

Explore the biomechanical differences in the hip joint between men and women, including variations in pelvic structure, sacral positions, femur angles, and how muscles facilitate movements. Gain insights into factors affecting stability, force transmission, and joint mobility.

maina
Download Presentation

Understanding Hip Joint Biomechanics: Gender Differences and Pelvic Positions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ESS 303 – Biomechanics Hip Joint

  2. ♀/♂ Differences (Women) • Entire pelvic girdle tilted forward • Bones thinner and lighter • Greater distance between greater-superior iliac spines (wider greater or false pelvis) • Wider and more spherical true pelvis • More triangular obturator foramen • Shallower symphasis pubis • Wider & more rounded pubic angle

  3. Sacral Positions Sacral Flexion (With Trunk Extension) Sacral Extension (With Trunk Flexion) Neutral

  4. 6 Pelvic Positions • Anterior tilt (with trunk flexion or thigh extension) • Posterior tilt (with trunk extension or thigh flexion) • Left lateral tilt (left side drops) • Right lateral tilt (right side drops) • Left rotation (left back/right forward) • Right rotation (right back/left forward)

  5. 4 Femur Neck Angles • Angle of inclination • =125º is normal • >125º is coxa valga • <125º is coxa vara • Angle of torsion • 12 to 14º is normal • Head forward is anteversion or internal femoral torsion (toeing in) – common & usually outgrown in children • Head back is retroversion (toeing out)

  6. 4 Femur Neck Angles • Angle of Wiberg • Increases with age • Male: about 38° • Female: about 35° • Acetabular anteversion • Male: about 18.5° • Female: about 21°

  7. Some Final Notes • Roundness of acetabulum decreases with age • Transmision of forces between upper and lower extremities • Acetabular labrum (fibro-cartilage lip) • Adds stability • Deepens socket • Increases concavity • Grasps head

  8. Movements and Major Muscles • Adduction: Gracilis & adductors (longus, brevis & magnus) • Abduction: Gluteus medius & gluteus minimus • Flexion: Iliopsoas (iliacus & psoas major) & rectus femoris • Extension: Gluteus maximus & hamstrings (semitendinosus, semimembranosus & biceps femoris) • Internal (medial) rotation: Gluteus medius, gluteus minimus • External (lateral) rotation: Gluteus maximus, adductor brevis & aductor magnus • Circumduction, horizontal (transverse) abduction, horizontal (transverse) adduction, hyperabduction, hyperadduction & Hyperextension : Combinations or exaggerations of above

More Related