Pseudosubluxation
Definition
Subluxation in children up to 8
- C 2/3 in 40% children
- C 3/4 14%
- up to 4 mm
Aetiology
Horizontal facet joints
- flat orientation of paediatric facets and laxity of ligaments
Become more vertical with age
Diagnosis
1. Swischuk's Line
- drawn along spinolaminar line C1 & C3