Is bone remodelling around fully hydroxyapatite-coated and tapered-wedge stems related to the stem fixation pattern?
Eur J Orthop Surg Traumatol
; 34(4): 2041-2047, 2024 May.
Article
en En
| MEDLINE
| ID: mdl-38517525
ABSTRACT
PURPOSE:
This study aimed to compare bone mineral density (BMD) changes around the femoral component after total hip arthroplasty (THA) in a fully hydroxyapatite-coated stem (CORAIL) and in a tapered-wedge stem (Taperloc complete) and identify predictors of BMD changes.METHODS:
This retrospective study compared 43 hips in the CORAIL group and 40 hips in the Taperloc group. The relative changes in BMD at 2 years after THA measured using dual-energy X-ray absorptiometry and the three-dimensional quantified contact states of the stem with the femoral cortical bone were assessed. Predictors of the relative change in the BMD around the proximal part of the stem were examined using multiple regression analysis.RESULTS:
The decrease in BMD in Gruen zone 7 was significantly less in the CORAIL group than in the Taperloc group (P = 0.02). In the CORAIL group, the contact area in any zone was not a significant predictor of the relative changes in BMD. The contact area between the Taperloc stem and the femoral cortical bone in zones 2 and 6 was a positive predictor of the relative changes in BMD in zones 1 (P = 0.02 and P = 0.04, respectively) and 2 (P = 0.008 and P = 0.004, respectively).CONCLUSION:
The CORAIL stem suppressed the postoperative BMD loss around the stem, irrespective of the contact state. The Taperloc complete stem required contact with the proximal femoral metaphysis to suppress the postoperative BMD loss around the stem.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Diseño de Prótesis
/
Absorciometría de Fotón
/
Densidad Ósea
/
Remodelación Ósea
/
Durapatita
/
Artroplastia de Reemplazo de Cadera
/
Fémur
/
Prótesis de Cadera
Límite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Eur J Orthop Surg Traumatol
Año:
2024
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Francia