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Ilizarov distraction osteogenesis over the preexisting nail for treatment of nonunited femurs with significant shortening

  • Wael Azzam
  • Mohamed El-Sayed
Original Article • LOWER LOMB - FRACTURES

Abstract

Purpose

Nonunion of the femur with significant shortening with retained intramedullary nail (IMN) is a challenging orthopedic problem. We investigated whether the application of Ilizarov distraction osteogenesis over the preexisting nail can simultaneously achieve union and correct shortening.

Methods

Thirteen patients with femoral diaphyseal nonunion associated with significant shortening with retained IMN were retrospectively reviewed. All patients were treated by distraction osteogenesis using a circular external fixator over the preexisting nail. The fixator was used to compress or distract the nonunion site and to gradually distract a separate osteotomy to restore limb length. The osteotomy was done percutaneously using the Gigli saw with the nail in situ. The applied surgical technique was bifocal compression distraction in 11 cases, bifocal distraction in one case, and monofocal distraction in one case.

Results

Bone healing was achieved in 11 cases (84.6 %) at both the nonunion and the lengthening sites. The mean length gained was 4 cm (range, 3–6 cm). The mean time to fracture union was 4.9 months (range, 4–6 months). The mean knee flexion improved from 86.5° (range, 40°–135°) preoperatively to 109.6° (range, 60°–125°) at final follow-up (p < 0.05). The mean limb-length discrepancy improved from 4.7 cm (range, 3–7.5) preoperatively to 0.7 cm (range, 0–3) at final follow-up (p < 0.001). Ten out of 13 patients had a total of 14 complications, with a mean of 1.1 complications per patient.

Conclusions

Distraction osteogenesis over the preexisting nail can be a good alternative to treat difficult femoral diaphyseal nonunions associated with significant shortening.

Keywords

Femoral diaphyseal nonunion Femoral shortening Ilizarov distraction osteogenesis Circular external fixator 

Notes

Compliance with ethical standards

Conflict of interest

Author A declares that he has no conflict of interest. Author B declares that he has no conflict of interest.

Ethical approval

All procedures performed in the present study on human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer-Verlag France 2016

Authors and Affiliations

  1. 1.Department of Orthopaedic Surgery and Traumatology, Faculty of MedicineTanta University HospitalTantaEgypt

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