CPT® Code 24470

Hemiepiphyseal arrest is a surgical procedure aimed at correcting angulation deformities at the elbow, specifically conditions known as cubitus varus and cubitus valgus. Cubitus varus, often referred to as "gunstock deformity," results in the forearm deviating toward the midline of the body, while cubitus valgus causes the forearm to deviate away from the midline. This procedure is specifically indicated for children and adolescents who have not yet reached full skeletal maturity, as their bones are still growing. The technique involves the strategic disruption of growth at the distal humerus, which is the lower end of the upper arm bone near the elbow joint. The term 'epiphysis' refers to the growth plate, which is crucial for bone development. By performing hemiepiphyseal arrest, the surgeon aims to halt growth in a specific area of the distal humerus while allowing growth to continue in other areas, thereby gradually correcting the angulation deformity over time. This procedure is essential for ensuring proper alignment of the elbow joint and preventing further complications associated with these deformities.