Stem subsidence of polished and rough double-taper stems
نویسندگان
چکیده
منابع مشابه
Stem subsidence of polished and rough double-taper stems
BACKGROUND AND PURPOSE Many clinical reports have indicated that polished hip stems show better clinical results than rough stems of the same geometry. It is still unknown, however, what the mechanical effects are of different surface finishes on the cement at the cement-bone interface. We compared mechanical effects in an in vitro cemented hip arthroplasty model. METHODS Two sizes of double-...
متن کاملStem fracture of a collarless, polished, double-taper cemented femoral prosthesis: a case report.
We report a case of stem fracture of a collarless, polished, double-taper cemented stainless steel femoral prosthesis. Scanning electron microscopy showed fatigue striations, indicating failure by fatigue. This case study highlights that stem fracture can still occur with modern implants. Size 0 CPT stem should be avoided in patients with high body mass index. To our knowledge this is the first...
متن کاملProspective two-year subsidence analysis of 100 cemented polished straight stems - a short-term clinical and radiological observation
BACKGROUND Cemented stems show good long-term results and the survival of new implants can be predicted by their early subsidence. With EBRA-FCA (Femoral Component Analysis using Einzel-Bild-Röntgen-Analyse) early subsidence as an early indicator for later aseptic loosening can be analysed. For the cemented TwinSys stem mid- and long-term data is only avalible from the New Zeeland Arthroplasty ...
متن کاملInfluence of stem geometry on the stability of polished tapered cemented femoral stems.
Polished, tapered stems are now widely used for cemented total hip replacement and many such designs have been introduced. However, a change in stem geometry may have a profound influence on stability. Stems with a wide, rectangular proximal section may be more stable than those which are narrower proximally. We examined the influence of proximal geometry on stability by comparing the two-year ...
متن کاملThe influence of cement thickness on stem subsidence and cement creep in a collarless polished tapered stem
OBJECTIVES Favourable results for collarless polished tapered stems have been reported, and cement creep due to taper slip may be a contributing factor. However, the ideal cement thickness around polished stems remains unknown. We investigated the influence of cement thickness on stem subsidence and cement creep. METHODS We cemented six collarless polished tapered (CPT) stems (two stems each ...
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ژورنال
عنوان ژورنال: Acta Orthopaedica
سال: 2009
ISSN: 1745-3674,1745-3682
DOI: 10.3109/17453670902967265