Original ArticlesGrit-blasted titanium femoral stem in cementless primary total hip arthroplasty: A 5- to 10-year multicenter study*,**,*,**
Section snippets
Materials and methods
The Alloclassic-SL femoral component (Sulzer Orthopaedics) (Fig. 1) is collarless and made of Protasul-100 titanium alloy (TiA Al Nb, Sulzer Medica, Winterthur, Switzerland), in which vanadium (a metal present in the usual titanium alloy) is replaced with niobium [20].The straight taper is flat in transverse section and wedge shaped mediolaterally. It is designed
Perioperative complications
Intraoperative fracture of the greater trochanter was noted in 4 hips (1 in center A, 3 in center B), with 1 requiring cerclage fixation. Venous thrombosis was diagnosed in 4 hips (3%) with no subsequent pulmonary embolism. Sciatic nerve palsy was noted in 2 hips (1.5%), with 1 complete and 1 partial recovery. Postoperative dislocation occurred in 7 hips (5.2%), 6 in center A (NS group), in which a posterolateral approach was used, and 1 in the 2 other centers (S group), in which an
Discussion
In the present series, patients were selected for femoral fixation on the basis of age (<65 years old) and bone stock quality in 2 centers. In the third center, representing 52% of the studied hips, exclusion was limited to poor femoral bone stock, found at surgery. In the series as a whole, there have been no revisions for loosening, no pending revisions, and no radiographic loosening over the study period of 1 to 10 years. Four stems were reoperated on in the early postoperative period for
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Cited by (0)
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†Hautepierre Hospital, Strasbourg;
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‡General Hospital, Selestat; and
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§Hotel-Dieu Hospital, Paris, France.
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Reprint requests: Christian Delaunay, MD, Clinique de l'Yvette, 43, route de Corbeil, 91160, Longjumeau, France.