CT

Epidemiology

< 10% of all talus fractures

Rare and often missed

Types

Epidemiology

Much less common than hip and knee OA
Patients tend to be younger

Incidence

Dale et al Acta Orthop 2012

- Nordic Arthroplasty Registry of 430,000 THA

Definition

Ossification of the posterior longitudinal ligament (OPLL)

Heterotopic ossification of the posterior longitudinal ligament

Epidemiology

2:1 Male:Female

More common in Japanese and East Asian populations