the pelvic girdle. a.general structure & function b.structure & function of specific joints...
TRANSCRIPT
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The Pelvic Girdle
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The Pelvic Girdle
A. General Structure & Function
B. Structure & Function of Specific Joints
C. Muscular Considerations
D. Specific Functional Considerations
E. Common Injuries
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The Hip and Pelvic Girdle
A. General Structure & Function
B. Structure & Function of Specific Joints
C. Muscular Considerations
D. Specific Functional Considerations
E. Common Injuries
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General Structure: Pelvic Girdle
L/R Pelvic Bones
Fusion of: ilium, pubis, ischium
3 Joints: pubic symphysis, 2 sacroiliac
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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
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Structural Factors that Affect Girdle Function: Angle of Inclination
Larger at birth, decreases with age…why?
Hip abductors? Length of
limb? Compression
vs. Shear?
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Structural Factors that Affect Girdle Function: Angle of Anteversion
Angle of anteversion Gluteus Maximus…ext. rotation?
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General Function
To provide stability for weight bearing To allow for mobility of the leg Load transmission
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Movements of the Hip Joint
•Flexion and Extension
•Abduction and Adduction
•External Rotation and Internal Rotation.
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Kinematics of the Hip Joint Femoral-on-Pelvic Osteokinematics Pelvic-on-Femoral Osteokinematics
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Kinematics of the Hip Joint Femoral-on-Pelvic Osteokinematics:
1. Flexion and Extension in Sagittal Plane
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Kinematics of the Hip Joint Femoral-on-Pelvic Osteokinematics:
Abduction and Adduction in the Frontal Plane
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Kinematics of the Hip Joint Femoral-on-Pelvic Osteokinematics:
Internal and External Rotation in the Horizontal Plane
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Kinematics of the Hip JointPelvic-on-Femoral Osteokinematics:
1. Flexion and Extension in Sagittal Plane
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Kinematics of the Hip JointPelvic-on-Femoral Osteokinematics:
Abduction and Adduction in the Frontal Plane Right lateral tilt and left lateral tilt
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Kinematics of the Hip JointPelvic-on-Femoral Osteokinematics:
Internal and External Rotation in the Horizontal Plane Right rotation and left rotation
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The Hip and Pelvic Girdle
A. General Structure & Function
B. Structure & Function of Specific Joints
C. Muscular Considerations
D. Specific Functional Considerations
E. Common Injuries
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Muscular Considerations: Sagittal Plane Pelvic Motion
1. Pelvic-on-Femoral Flexion: Anterior Pelvic Tilt
Force coupleHip flexors Lower trunk extensors
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Muscular Considerations: Sagittal Plane Pelvic Motion
1. Pelvic-on-Femoral Flexion: Posterior Pelvic Tilt
Force coupleHip extensors Lower trunk flexors
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Muscular Considerations: Overall Function of the Hip Flexors
2. Femoral-on-Pelvic Hip Flexion
synergy between hip flexors and abdominal muscles
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Muscular Considerations: Extensors
Pelvic-on-Femoral
Hip Extension
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Muscular Considerations: Hip Adductors
Hip Adduction Pelvic Action? Muscles being
utilized?
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The Hip and Pelvic Girdle
A. General Structure & Function
B. Structure & Function of Specific Joints
C. Muscular Considerations
D. Specific Functional Considerations
E. Common Injuries
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Specific Functional Considerations
Bilateral hip motion in sagittal plane Unilateral hip motion if sagittal plane Single-leg stance
Walking Running Untrained