manipulation

Definition

Facet joint dislocations secondary flexion distraction injury

Epidemiology

10%

Stages

1. Unifacet subluxation - interspinous process widening

2. Unifacet dislocation - 25% anterolisthesis

3. Bifacet dislocation - 50% anterolisthesis

4. Complete vertebral translation - 100% anterolisthesis

Unilateral Facet Joint Dislocation

Types

Age 0 - 5

- Salter Harris I

Age 5 - 11

- Salter Harris II

III / IV rare

Issues

Great remodelling potential

- 80% growth of humerus from proximal physis

Shoulder ROM compensatory

Age

- even older adolescents do well

Definition

Pain in region of coccyx

Epidemiology

Women

- often obese

- mean age 40 years

Aetiology

Fracture

Difficult vaginal delivery

Subluxation / hypermobile coccyx

Anatomy

3 or 4 fused coccygeal vertebrae

Triangular structure