Clinical Orthopaedics and Related Research

, Volume 466, Issue 12, pp 2923–2932

Limb Lengthening and Then Insertion of an Intramedullary Nail: A Case-matched Comparison

  • S. Robert Rozbruch
  • Dawn Kleinman
  • Austin T. Fragomen
  • Svetlana Ilizarov
Symposium: Advances in Limb Lengthening and Reconstruction


Distraction osteogenesis is an effective method for lengthening, deformity correction, and treatment of nonunions and bone defects. The classic method uses an external fixator for both distraction and consolidation leading to lengthy times in frames and there is a risk of refracture after frame removal. We suggest a new technique: lengthening and then nailing (LATN) technique in which the frame is used for gradual distraction and then a reamed intramedullary nail inserted to support the bone during the consolidation phase, allowing early removal of the external fixator. We performed a retrospective case-matched comparison of patients lengthened with LATN (39 limbs in 27 patients) technique versus the classic (34 limbs in 27 patients). The LATN group wore the external fixator for less time than the classic group (12 versus 29 weeks). The LATN group had a lower external fixation index (0.5 versus 1.9) and a lower bone healing index (0.8 versus 1.9) than the classic group. LATN confers advantages over the classic method including shorter times needed in external fixation, quicker bone healing, and protection against refracture. There are also advantages over the lengthening over a nail and internal lengthening nail techniques.

Level of Evidence: Level III, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.


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Copyright information

© The Association of Bone and Joint Surgeons 2008

Authors and Affiliations

  • S. Robert Rozbruch
    • 1
  • Dawn Kleinman
    • 1
  • Austin T. Fragomen
    • 1
  • Svetlana Ilizarov
    • 1
  1. 1.Institute for Limb Lengthening and Reconstruction, Limb Lengthening and Deformity Service, Hospital for Special SurgeryWeill Medical College of Cornell UniversityNew YorkUSA

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