Abstract
We have reviewed 17 patients (18 hips) who required repeat open reduction for recurrent or persistent dislocation after a previous attempt at open reduction for developmental dysplasia of the hip (DDH). The mean follow-up was 5.5 (3–15) years. At the review, five patients were limping and had limited hip motion but no pain. Six hips were classified as Severin class III or more, and avascular necrosis was evident in 11. We suggest that technical failure is usually the cause for re-dislocation in unilateral cases, as we discovered at repeat open reduction in five of six patients with unilateral dislocation. The biological behaviour of bilateral dislocations may in someway be different since in nine of 11 patients with bilateral dislocations, no obvious cause could be attributed. The outcome is usually poor.
Résumé
Nous avons examiné 17 malades (18 hanches) qui ont nécessité une réduction ouverte répétitive de la hanche pour une luxation récidivante ou persistante après une première réduction ouverte pour dysplasie congénitale (DDH). Le suivi moyen était de 5,5 ans (3–15). À la révision cinq malades boitaient et avaient une limitation des amplitudes articulaires mais aucune douleur. Six hanches ont été classées comme Severin classe III ou plus et une nécrose avasculaire était présente dans 11 hanches. Nous suggérons que l’échec technique est la cause des luxations récidivantes dans les cas unilatéraux, comme nous l’avons constaté lors de la nouvelle réduction chez 5 des 6 malades avec luxation unilatérale. Le comportement des luxations bilatérales est différent puisque chez 9 des 11 malades avec luxation bilatérale aucune cause évidente ne pouvait être attribuée. Le résultat est habituellement mauvais.
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