CPT® Code 27740

1. Indications

Epiphyseal arrest is indicated for patients who present with a significant bone length discrepancy between the lower legs, specifically involving the tibia and fibula. This condition may arise from various underlying issues, including congenital deformities, trauma, or conditions that affect normal bone growth. The procedure aims to correct or manage these discrepancies to improve functional outcomes and alignment of the lower extremities.

• Bone Length Discrepancy The primary indication for performing epiphyseal arrest is to address a notable difference in length between the tibia and fibula, which can lead to functional impairments.
• Congenital Deformities Patients with congenital conditions that affect bone growth may require this procedure to ensure proper limb alignment and function.
• Trauma Injuries that disrupt normal growth patterns in the tibia and fibula may necessitate epiphyseal arrest to prevent further complications.

2. Procedure

The procedure for epiphyseal arrest involves several critical steps to ensure successful outcomes. Initially, the surgeon makes incisions over the proximal and distal aspects of both the tibia and fibula. This careful incision placement is essential for accessing the growth plates while minimizing damage to surrounding tissues. Following the incisions, the surgeon meticulously dissects the soft tissues, taking special care to protect vital structures such as blood vessels and nerves that are located in proximity to the surgical site.

• Incision and Dissection The surgeon begins by making precise incisions over the proximal and distal tibia and fibula, followed by careful dissection of the soft tissues to expose the underlying bone structures.
• Exposure of Bone Once the soft tissues are adequately dissected, the proximal and distal tibia and fibula are exposed, allowing for direct access to the growth plates.
• Placement of Devices The surgeon then strategically places devices such as Blount staples, transphyseal screws, or a plate and screw system into the epiphyses of the proximal and distal tibia and fibula. These devices are designed to temporarily arrest bone growth, effectively managing the length discrepancy.

3. Post-Procedure

After the completion of the epiphyseal arrest procedure, patients typically require careful monitoring and follow-up care to ensure proper healing and recovery. Post-operative care may include pain management, wound care, and physical therapy to promote mobility and strength in the affected limbs. Patients are usually advised to limit weight-bearing activities for a specified period to allow for optimal healing of the surgical sites. Regular follow-up appointments are essential to assess the success of the procedure and to monitor for any potential complications, such as infection or improper healing.