stability
Hangman's / C2 Fracture
Definition
Bilateral Pars Fracture C2
- traumatic axis spondylolisthesis
NHx
Neurological injury uncommon
- fragments separate and decompress
Different to judicial hanging where spinal cord is severed
Xray
Head size
Issues
Wear
Stability
Normal feel of hip
Increased ROM
Wear
Large head
- increase volumetric wear
- less penetrative / linear wear
Small head
- increased linear wear
- decreased volumetric wear
ACL Avulsion Fracture
Meyers & McKeever classification
Type I: Undisplaced avulsion fracture
Type II: Anterior portion displaced & hinged
Type IIIA: Displaced
Type IIIB: Displaced & Rotated