Lunate-triquetral coalition in an Australian setting

Carpal coalition is a relatively uncommon anatomical variant, seen in approximately 0.1% of the population.1 The prevalence of this variant has not been described in an Australian setting. Carpal coalition refers to the affected carpal bones united by either an osseous or non-osseous block, the latter united by either cartilage or fibrous tissue.2 Carpal coalition can cause wrist pain and has no external physical signs, and therefore can confound treatment in the setting of injury.