Alumina Delta-on-Alumina Delta Bearing in Cementless Total Hip Arthroplasty in Patients Aged <50 Years

Abstract

Our minimum 6-year follow-up results with the use of alumina delta ceramic-on-alumina delta ceramic bearings in patients aged <50 years suggest that cementless THA provides a high rate of survivorship without evidence of osteolysis or fracture of ceramic material.

Fourth-generation ceramic-on-ceramic THA results in improvements in midterm outcomes compared to third-generation THA but does not resolve noise problems: a cohort study of a single-hip system

“…We observed one (0.3%) fracture of a 28-mm short-neck alumina Forte head at 4.5 years after the index THA, and no ceramic fracture in the Delta COC cohort. Our findings are consistent with those of Kim et al [32], who identified no Delta ceramic head or liner fracture at a mean of 13.1 years of follow-up. Ceramic fractures are usually associated with specific events, such as trauma, hip dislocation, or cup malposition (i.e., excessively abducted or anteverted cup angle) [7].…”

“…Squeaking was reported in 2% of hips in each group, with no hip being revised due to this phenomenon. Although our results are similar to those of previous reports [11, 32] on modern ceramic bearings, the 2% incidence of squeaking in our study was lower than the rate of 7.5% published recently by Hamilton et al [1]. The reason for this difference is unclear, but may be due to the influence of lower BMI in our series compared with Westerners.…”

“…Many previous studies regarding third- and fourth-generation ceramic bearings have found little or no osteolysis [1, 4, 10, 11, 32, 33]. In the present study, we also found no evidence of acetabular or femoral osteolysis at the final follow-up.…”

“…In addition, D’Antonio et al [31], in their multi-surgeon, multi-center study, reported 10-year survival rates of 97.9% for System I and 95.2% for System II; Lee et al [34] reported a 10-year survival rate of 99%, and Murphy et al [35] reported a 9-year survival rate of 96%. For the Delta COC bearings, Hamilton et al [1] reported 5-year survival rates of 97.7% for the 28-mm COC arm and 97.3% for the 36-mm COC arm, and Kim et al [32] reported a 13-year survival rate of 99.7%, predominantly for the 36-mm femoral head. Survival rates in our series with regard to all-cause revision were 98.4% for the Forte COC cohort and 98.6% for the Delta COC cohort at 5 years.…”

Midterm Results of Fourth-Generation Ceramic-On-Ceramic Total Hip Arthroplasty

“…According to reports of the manufacturer (CeramTec GmbH, Plochin-gen, Germany) and Agency Nationale de Sécurité du Médicament et des Produits de santé, ceramic head fracture of Biolox ® Delta has been 10–100 times lower than third-generation ceramic which was 0.0013%–0.002% and ceramic liner fracture was slightly lower which was 0.025%–0.028% 21. And also, previous reports did not report any ceramic head fracture 2223. These results have made the fourth generation of CoC articulation as an attractive articulation of choice to treat young active patients who require long survival of THA.…”