AVN of Hip Flashcards
1
Q
What is avascular necrosis?
A
loss of the blood supply => death of bone tissue
Causes bone destruction and loss of joint function
2
Q
Where does AVN most commonly affect?
A
epiphysis of long bones such as the femur
3
Q
Causes of AVN
A
long-term steroid use
chemotherapy
alcohol excess
trauma
4
Q
Clinical features of AVN
A
Initially asymptomatic
May develop pain in affected joint
5
Q
XR findings in AVN
A
- XR may be normal initially
- Osteopenia and microfractures may be seen early
- Collapse of the articular surface may result in the crescent sign
6
Q
Ix of choice in AVN
A
MRI Hip
7
Q
Management of AVN
A
Hip joint replacement
8
Q
A
