W5- Hip/Pelvis Radiologic Evaluation Flashcards
1
Q
What is the cross-over sign? What is it associated with?
A
Anterior and posterior borders of acetabulum cross over. Causes increased risk for impingement.
2
Q
What are all the proximal femur fractures? (6)
A
- Femoral Head Fx
- Subcapital Fx
- Femoral Neck
- Intertrochanteric Fx
- Subtrochanteric Fx
- Shaft Fx
3
Q
What are the (4) types of acetabular fractures?
A
- Anterior
- Posterior
- Transverse
- T-shape Fx
4
Q
An alpha angle of ____ degrees is concerning for what?
A
Alpha angle >57 degrees (42 normal) is concerning for FAI.
5
Q
Does a Cam or Pincer deformity affect the alpha angle?
A
Cam increases the alpha angle.
6
Q
What is the difference between a Cam and Pincer deformity?
A
Cam deformities describe an abnormal anterosuperior femoral head–neck junction, whereas pincer deformities describe abnormalities in the shape or orientation of the acetabulum .
