Supernumerary Carpal Bones in Larsen Syndrome: A Review of the Literature and Case Study

Abstract

Larsen syndrome is a rare congenital disorder commonly associated with dysmorphic facies, large joint dislocations, equinovarus or equinovalgus foot deformities, and various hand anomalies, including supernumerary carpal bones. The authors present a case of Larsen syndrome with bilateral supernumerary carpal bones as the sole clinical manifestation. A literature review investigating skeletal anomalies in patients with Larsen syndrome was performed and revealed that the present case represents a unique presentation of this disorder, lacking all of the major clinical features previously described in the literature. An approach to patients with supernumerary carpal bones is discussed.