Hospital for Special Surgery, New York, NY 10021, USA.
J Orthop Trauma. 2011 Nov;25(11):681-4. doi: 10.1097/BOT.0b013e3181f92d6e.
Leg length discrepancies can occur despite successful union of femur fractures after intramedullary nailing (IMN). Often, the leg length discrepancy can result in significant disability to the patient, altered gait biomechanics, pelvic obliquity, and pain. Therefore, a successful clinical result for such deformities after IMN involves addressing the leg length inequality. Femoral reconstruction with an osteotomy around an existing intramedullary nail was introduced to address axial deformity correction and limb lengthening without changing or removing a previously inserted IMN. This technique uses the principles of lengthening over an IMN. The presence of the nail has minimized the time needed for the external fixator because the nail supports the regenerate bone or osteotomy during the consolidation phase. With this technique, surgery is minimized by avoiding the need for exchange nailing.
尽管髓内钉（IMN）成功地固定股骨骨折后，仍可能出现肢体长度差异。通常，肢体长度差异会导致患者明显残疾、步态生物力学改变、骨盆倾斜和疼痛。因此，IMN 后这种畸形的成功临床结果需要解决肢体长度的不平等问题。在现有的髓内钉周围进行截骨的股骨重建术被引入，以在不改变或移除先前插入的髓内钉的情况下解决轴向畸形矫正和肢体延长问题。该技术利用髓内钉延长的原理。钉子的存在最大限度地减少了外固定器所需的时间，因为钉子在愈合阶段支撑再生骨或截骨。通过这种技术，通过避免需要更换钉，可以使手术最小化。
