MSK - Hip Joint Flashcards
1
Q
Name the articulating surfaces of the hip joint
A
- Acetabulum (depression in the lateral side of the pelvic girdle)
- Head of the femur (fits into the acetabulum)
- Both are covered in articulate cartilage that is thicker in areas that bear more weight
2
Q
What is the function of the ligaments in the hip joint?
A
Increase stability
3
Q
What is the only intracapsular ligament of the hip joint?
What are its attachments?
A
- Ligament of head of femur
- Acetabular fossa to fovea of the femur
- Encloses a small portion of obturator artery
4
Q
What are the extracapsular ligaments?
A
- Iliofemoral
- Pubofemoral
- Ischiofemoral
5
Q
What are the attachments of the iliofemoral ligament?
What is its function?
A
- Ilium (inferior to AIIS)
- Intertrochanteric line (2 places)
- Prevents hyperextension of the hip
6
Q
What are the attachments of the Pubofemoral ligament?
What is its function?
A
- Iliopubic eminance and obturator eminance
- Blends with articular capsule
- Prevents excessive abduction and extension
7
Q
What are the attachments of the Ischiofemoral ligament?
What are the functions?
A
- Ischium
- Greater trochanter
- Excessive extension of the femur
8
Q
How is vascular supply to the hip joint achieved?
A
- Medial and lateral circumflex arteries
- Medial supplies majority of the blood (damage causes avascular necrosis)
- Lateral has to penetrate through thick iliofemoral ligament to reach hip
9
Q
What type of joint is the hip joint?
A
Synovial ball and socket
