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Clinical and radiological results of hydroxyapatite-coated acetabular cups

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Abstract

We prospectively studied a consecutive series of 60 primary total hip arthroplasties in 52 patients. All patients had a hydroxyapatite-coated hemispherical acetabular cup (OCTOFIT). Mean patient age was 52.5 (34–73) years. In 38 hips, a 28-mm and in 22 hips a 32-mm diameter cobalt-chrome femoral head was used. We could follow 53 hips for a mean of 81 (28–125) months. Four cups were revised because of osteolysis, and in another six cups, slight osteolysis without migration was seen. The average annual linear wear rate was 0.05 mm (±0.05) for 28-mm heads and 0.16 mm (±0.09) for 32-mm heads (p<0.0001). Survivorship analysis predicted a survival rate of 86±6.7% at 10 years.

Résumé

Nous avons étudié de façon prospective une série consécutive de 60 arthroplasties totales primaires de hanche chez 52 malades. Tous les malades avaient une cupule acétabulaire hémisphérique enduite d’hydroxyapatite (OCTOFIT). L’âge moyen des malades était de 52,5 ans (34–73). La tête était en chrome-cobalt, de 28 mm pour 38 hanches et de 32 mm pour 22 hanches. Nous avons suivi 53 hanches pendant une moyenne de 82 mois(28–125). Quatre cupules ont été révisées à cause d’une ostéolyse et pour six autres cupules exixtait une discrète ostéolyse sans migration. L’usure linéaire moyenne annuelle était de 0,05 mm (±0,05) pour les têtes de 28 mm et 0,16 mm (±0,09) pour les têtes de 32 mm (p<0,0001). L’analyse de Kaplan–Meier a prédit un taux de la survie de 86±6,7% à 10 années.

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  1. Orthopaedic and Traumatology Department, Medical Academy of Lublin, University Hospital nr 4, ul. Jaczewskiego 8, 20-951, Lublin, Poland

    J. Blacha & J. Gągała

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  1. J. Blacha
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  2. J. Gągała
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Correspondence to J. Blacha.

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Blacha, J., Gągała, J. Clinical and radiological results of hydroxyapatite-coated acetabular cups. International Orthopaedics (SICOT) 28, 362–365 (2004). https://doi.org/10.1007/s00264-004-0563-0

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