Limb Lengthening — Procedure Guide, Recovery & Risks | MyMedicPlus

Limb lengthening uses controlled bone distraction after an osteotomy to generate new bone, correcting leg length discrepancies, post-traumatic bone defects, or short stature caused by growth disorders.

Indicated for leg length discrepancy over 2 cm, achondroplasia, post-traumatic bone loss, growth arrest deformities, and cosmetic height enhancement in skeletally mature patients or those with open growth plates.

The bone is cut (osteotomy) and an Ilizarov external fixator or PRECICE intramedullary nail placed. Distraction begins 5–10 days post-surgery at 1 mm per day in 4 increments until the target length is achieved.

Distraction phase lasts 30–90 days at 1 mm per day. Consolidation requires 60–120 days for bone mineralisation. Physiotherapy maintains joint mobility throughout. Full weight-bearing resumes after confirmed consolidation.

Risks include joint contracture, pin tract infection (external fixator), nerve traction injury, premature consolidation, delayed union, and ankle or foot stiffness requiring intensive physiotherapy to resolve.

Correction of 5–8 cm is routinely achievable with modern techniques. The PRECICE magnetic intramedullary nail eliminates external fixators, improving patient comfort. Success rates exceed 90% in experienced centres.