17-year follow-up of the rough-blasted threaded Weill cup in uncemented total hip arthroplasty

Abstract

The rough-blasted threaded Weill cup provides a good long-term performance in cementless total hip arthroplasty. The results compare favourably to the smooth threaded cup design.

The Cementless Spotorno stem in THA: 10 year results

“…Goosen noted that spot welds were observed on average at 1.4 years using HA-coated stems, and that 70% of cases achieved spot welds within one year (3). Despite a fairly high failure rate of the acetabular components, satisfactory results of THA using CLS stems have been described (5–6–7–8–9), and the survival rate of the stem was from 94% to 97% at mean 8.9 to 16 years’ follow up. Indeed various press-fit stems show excellent outcomes, but most of the cementless prostheses achieve stability with diaphyseal fit rather than metaphyseal fit, based on long-term radiographic findings.…”

“…The anchorage concept of CLS stem depends on the preservation of the proximal femur and fixation without attempting to fill the canal distally. Satisfactory long-term outcomes of cementless stems have been reported (5–6–7–8–9). However, the majority of stems are well fixed with canal filling or diaphyseal fit, and cortical hypertrophy or metaphyseal bone atrophy has been often observed.…”

“…The CLS stem is a double-tapered rectangular straight stem, which consists of grit-blasted surface finish and tapered titanium alloy. Several straight fins are designed on the anterior and posterior surfaces of the proximal CLS stem and these have the advantage of attaining additional stability in the proximal femur (5–6–7–8–9). The anchorage concept of CLS stem depends on the preservation of the proximal femur and fixation without attempting to fill the canal distally.…”