CPT® Code 27485

Hemiepiphyseal arrest is a surgical procedure aimed at correcting angulation deformities of the leg, specifically conditions such as genu varus, commonly known as bowleg, and genu valgus, referred to as knock-knee. The term "epiphysis" denotes the growth plate of the bone, which is crucial for the longitudinal growth of the skeletal system. During this procedure, a surgical incision is made over the distal end of the femur or the proximal ends of the tibia or fibula, allowing access to the underlying bone structures. Careful dissection of the surrounding soft tissues is performed to safeguard vital blood vessels and nerves that may be present in the area. Once the distal femur or proximal tibia or fibula is adequately exposed, various devices such as Blount staples, transphyseal screws, or a plate and screw system are employed. These devices are strategically placed within the epiphysis to temporarily halt bone growth in a targeted manner. It is important to note that only a specific portion of the epiphysis is subjected to this arrest, while the remaining portion is left untreated, allowing for continued growth. This selective approach effectively diminishes or corrects the angulation deformity, facilitating improved alignment of the leg over time.