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Anterior discectomy and fusion with internal fixation for unstable hangman’s fracture

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Abstract

Between 1999 and 2004, 28 patients (average age: 41, range: 18–70 years) with unstable hangman’s fracture underwent anterior discectomy and fusion with internal fixation at our unit. According to the Levine-Edwards classification, all cases were unstable with type II (10 cases), type IIA (17 cases) and type III (1 case). An average follow-up of 15 months was achieved (range: 3–48 months). The average operative time was 107 min (80–131 min). No patient received blood transfusion. No patient experienced worsening neurological function postoperatively. No other intra- or postoperative complication was observed. All patients were relieved from axial pain. Neurological status improved postoperatively in all four cases with neurological deficit. Each patient showed evidence of a solid anterior C2–3 interbody fusion after six months. No bone graft or plate screws complication was observed in any of the cases during the follow-up period. In our experience the anterior approach with primary internal stabilisation may be a feasible and safe method to treat unstable hangman’s fracture.

Résumé

Entre 1999 et 2004, 28 patients (âge moyen 41 ans de 18 à 70 ans), présentant une fracture instable de Hangman ont bénéficié d’une discectomie antérieure avec greffe et ostéosynthèse interne. L’évaluation a été faite selon la classification de Levine-Edwards. Tous les cas traités présentaient une instabilité de type II (10 cas), type IIA (17 cas) et type III (1 cas). Le suivi moyen a été de 15 mois (de 3 à 48 mois). Le temps opératoire moyen a été de 107 minutes (80 à 131 minutes). Aucun patient n’a nécessité de transfusion. Aucun patient n’a présenté d’aggravation des signes neurologiques postopératoires. Aucune complication per ou post-opératoire n’a été observée. Tous les patients ont été améliorés de leur douleur. L’examen neurologique a été amélioré dans 4 cas et tous les patients ont montré, à l’évidence une fusion C2–3 importante après 6 mois. Nous n’avons observé aucune complication au niveau de la greffe, ni de la plaque d’ostéosynthèse. Pour nous, l’abord antérieur permettant une fixation primaire est une méthode tout à fait fiable dans le traitement les fractures instables de type Hangman.

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Correspondence to Hao Xu.

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Xu, H., Zhao, J., Yuan, J. et al. Anterior discectomy and fusion with internal fixation for unstable hangman’s fracture. International Orthopaedics (SICOT) 34, 85–88 (2010). https://doi.org/10.1007/s00264-008-0658-0

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