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Questions and Answers
Which condition is more common in boys aged 3-12 years?
Which condition is more common in boys aged 3-12 years?
What mechanism of injury can lead to femoral neck stress fracture?
What mechanism of injury can lead to femoral neck stress fracture?
Where does 'External snapping' occur in the body?
Where does 'External snapping' occur in the body?
What is the typical location of hip pain in patients?
What is the typical location of hip pain in patients?
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What does 'Internal snapping' involve in the hip?
What does 'Internal snapping' involve in the hip?
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Study Notes
The Hip Joint
- The hip joint is a multiaxial ball and socket synovial joint.
- Stability of the hip joint is maintained by muscles, capsule, and deep insertion of the femur into the acetabulum.
Acetabulum
- The acetabulum is formed by the fusion of ilium, pubis, and ischium.
Ligaments of the Hip
- Iliofemoral ligament (also known as the "Y ligament of Bigelow"):
- Strongest ligament in the body.
- Prevents excessive extension.
- Maintains upright posture at the hip.
- Ischiofemoral ligament:
- Prevents excessive extension.
- Stabilizes the hip in extension.
- Pubofemoral ligament:
- Prevents excessive abduction and extension.
- All three ligaments limit internal rotation of the femur.
The Femoral Triangle
- Bound by: Sartorius, inguinal ligament, and adductor longus.
- Contains: Femoral nerve, artery, and vein.
Forces Acting on the Hip
- Includes ground reaction forces, gravity, and body weight (BW).
- Forces in different activities:
- Standing: 1.3 x BW = 195 lbs.
- Standing on one leg: 2.4-2.6 x BW = 375 lbs+.
- Walking: 1.3-2.5 x BW = 195 - 375 lbs +.
- Walking up stairs: 3 x BW = 450 lbs.
- Running: 4 x BW.
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Description
Test your knowledge of the anatomy and stability of the hip joint with this quiz. Explore the ligaments, muscles, and anatomical features that contribute to the function and structure of this important joint.
