Allongement de membre « automatique » par instrumentation intramédullaire : pièges et résultats préliminaires

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• 作者：T.M. Tiefenboeck^a ; L. Zak^a ; A. Bukaty^b ; G.E. Wozasek^a ; ^{gerald.wozasek@meduniwien.ac.at" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Leg length discrepancy ; Intramedullary lengthening ; Magnetically actuated ; Complications ; Preliminary results
• 刊名：Revue de Chirurgie Orthopédique et Traumatologique
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：102
• 期：7
• 页码：620
• 全文大小：158 K

文摘

The treatment of leg length discrepancy and deformities has become more common over the last few decades due to newly developed implants. Lengthening using fully implantable intramedullary nails provides many advantages; however, only little data is available. Therefore we aimed to determine: (1) safety of the implant, (2) the complication rate and (3) functional outcome after magnetic driven intramedullary bone lengthening with a telescopic implant.

Hypotheses

Automatic bone lengthening with intramedullary nails provide good short-term outcome.

Patients and methods

Ten patients with limb length discrepancy of lower extremity, treated with an Ellipse PRECICE^® nail, were included in this retrospective follow-up study. The mean limb length discrepancy was 4.7 cm (range: 2.5–7.0 cm).

Results

In all patients, limb-lengthening goals were reached within a range of  ± 0.5 cm after a mean time of 53 days. However, in 2 patients, mechanical failures with unintended shortening were observed. In a further patient, nail breakage occurred. Overall, 7 patients presented with complications during the follow-up period.

Discussion

The PRECICE^® nail represents a new, fully implantable, magnetically driven device for limb lengthening. However, due to a high rate of complications, a close follow-up is necessary to identify early implant failures and to avoid severe adverse outcomes.

Level of evidence

Retrospective follow-up study, case series Level IV.