Sequential Deformity Correction and Tibial Elongation Using Dormant Magnetic Nail Technique

A 17-year-old female with Achondroplasia presented for the final phase of her elective leg elongation process and correct her left tibia deformity. The left leg was shorter and had an ankle varus deformation. Two stages were used to treat the deformity, the first to correct the coronal deformity and the second to address the length discrepancy. A distal osteotomy was performed followed by the insertion of a Precice elongating nail, which stabilized the correction. The Precice nail was left inactive until several months later when another osteotomy was performed in the proximal tibia (around the nail) and elongation was initiated. A careful multistep process was used to correct the varus deformation and limb length discrepancy while using a novel dormant nail technique.