Abstract

Background: Metal-on-metal bearing with cemented
femoral component and cementless acetabular fixation is the current standard in surface replacement arthroplasty (RSA) of the
hip. Because of concerns about the long-term survivorship of cemented stems in conventional hip arthroplasty, it seems
logical to achieve cementless fixation on the femoral side with RSA. Questions/Purposes: The goals of this review were to
evaluate clinical and radiological data reported from previously
published cementless RSA series. In addition, we intend to review author’s preliminary experience with Conserve Plus
cementless devices specifically assessing the clinical outcomes, the complications rate, the survivorship, and the metallic ions levels measured in follow-up.

Methods: A references search was done with PubMed
using the key words “cementless hip resurfacing”, “cementless hip resurfacing prosthesis”, and “femoral cementless hip
resurfacing”. Additionally, the clinical outcomes, the complications rate, the survivorship, and the metallic ions levels were
measured in 94 cementless Conserve Plus© devices in 90 patients (68 males and 22 females) with a mean age of 41.1 years (18– 59). Mean follow-up was 13.1 months (8–16).

Results: No revision was performed during the observed
follow-up. Neither radiological signs of loosening nor neck narrowing >10% were evident. Chromium and cobalt levels in whole blood samples rose respectively from 0.53 μg/l (0.1–1.7) to 1.7 μg/ l (0.6–2.9) and from 0.54 μg/l (0.1–1.4) to 1.98 μg/l
(0.1–2.8). Conclusions: Cementless “fit and fill” femoral-side
fixation, which seems to be potentially evolved and design-related, should be considered for future hip-resurfacing device generations.

Julien Girard, MD, MsC. – HR trained Drs Roy, Lavigne
and Vendittoli
1450 hip resurfacing with 400
cementless***
Wright C+ Cementless

Praticien Hospitalier
Ancien Chef de Clinique- Assistant Universitaire des Hôpitaux
Service d’Orthopédie C
Hôpital Roger Salengro
CHRU de Lille
59037 Lille Cedex
Tel : 03 20 44 67 05
Fax : 03 20 44 67 71

Dr. Girard Website