Avascular necrosis
Epidemiology
Much less common than hip OA
- usually presents late
Aetiology
Similar causes as hip (AS IT GRIPS 3C)
Alcohol / Steroid / Trauma / Idiopathic
Gauchers
RA / RTx
Sickle Cell
Much less common than hip OA
- usually presents late
Similar causes as hip (AS IT GRIPS 3C)
Alcohol / Steroid / Trauma / Idiopathic
Gauchers
RA / RTx
Sickle Cell
1. Dorsal lip fracture / Tuberosity fracture
- avulsion fractures
- most common
- beware avulsion T post
2. Body fracture
3. Stress Fractures
Types
A. Transverse fracture in coronal plane
B. Transverse from dorsolateral to plantarmedial
C. Central or lateral comminution