Cementless revision femoral stems application of press-fit principles and clinical outcomes

Canovas, François; Putman, Sophie; Dagneaux, Louis; Chadli, Lamine; Béguec, Pierre Le

doi:10.1007/s00264-018-4265-4

Cited by 4 publications

(1 citation statement)

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“…Radiolucent lines are described as a sign of stress shielding, which leads to aseptic loosening, as previously shown in studies of commonly used implants [6,9]. Current studies by Canovas et al [23,24] paid attention to the shape of press-fit implants for bone fixation. Good clinical outcomes were achieved in cases with proximal press-fit fixation with a smaller extent degree or with short diaphyseal press-fit stems.…”

Section: Discussionmentioning

confidence: 91%

High Revision Rates of a Cementless Beta-Titanium Alloy Stem with Contamination-Free Roughened Surface in Primary Total Hip Arthroplasty

Stenicka¹,

Hanreich²,

Babeluk³

et al. 2020

JCM

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Optimal osseointegration of cementless total hip arthroplasty is essential for high stability and long-term survival. The purpose of this follow-up study was to evaluate the clinical and radiological outcome, the complications, and survival rates of a beta-titanium alloy stem with a specific grit-blasted-free surface. In 192 patients (mean age of 64.4 years), 202 consecutive primary total hip arthroplasties were performed using a cementless Hipstar® stem (Stryker, Duisburg, DE). The Harris Hip Score (HHS) was assessed pre-operatively and post-operatively. Radiolucent lines were evaluated and the implant survival rate was calculated using Kaplan-Meier analysis. The mean follow-up was 7.71 years (range of 5.0–14.0 years). Overall, 15 revisions were performed. Early aseptic stem loosening was observed in six cases (2.97%). Radiolucent-lines adjacent to the stem were detected in 73 cases (83.02%), especially (70.46%) in the Gruen zones 1, 7, 8, and 14. The mean postoperative HHS was 92.65 points (range 42–100). The cumulative survival probability of the stem was 94.4% (95% CI 90.3 to 98.5%). Considering aseptic failure as an endpoint, the cumulative survival rate of the stem was 95.3% (95% CI 0.914 to 0.992) at six years of follow-up. Overall, an inferior mid-term implant survival was observed in comparison to well-established cementless stem designs.

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Section: Discussionmentioning

confidence: 91%