Role of Multiplanar Locking in Enhancing Stability of Ankle Arthrodesis Nails

 

Ankle arthrodesis is a proven treatment for patients with severe ankle arthritis, deformity, or failed previous surgeries, aiming to achieve solid fusion and pain-free weight bearing. Intramedullary ankle arthrodesis nails are widely used due to their strength and ability to provide stable fixation, with multiplanar locking playing a key role in enhancing their performance. The ankle is subjected to significant rotational and axial forces during daily activities, and inadequate control of these forces can lead to micromotion, delayed union, or non-union. Multiplanar locking involves placing locking screws in different planes, allowing the construct to resist forces from multiple directions. This improves rotational and axial stability, maintains compression at the fusion site, and reduces the risk of implant migration. The technique is especially beneficial in osteoporotic bone, complex deformities, revision cases, and Charcot joints. By improving overall construct stability, multiplanar locking supports reliable fusion, reduces complications, and may allow more confident postoperative rehabilitation protocols.