The ceramic-on-ceramic strategy in acetabular revision faces potential limitations due to the femoral stem, as the implantation of ceramic ball head on a previously used taper is not recommended. Delta (r) ball heads with titanium sleeves have been proposed to avoid femoral revision. The study reports a minimum 3 years follow-up experience using this strategy. This series report 42 revisions (16 metal-on-metal and 26 PE THA) in 39 patients (mean age 59.2 years, mean BMI 25). The 12-14, 5°46 sleeves were used in 24 cases and 10-12, 6° in 18 cases. (32mm ball head in 26 cases and 36 mm in 16 cases). Titanium serum level has been studied to detect the potential release from the sleeve-taper interface.Introduction
Materials and Methods
Wear performances and fracture toughness of the alumina-matrix composite (AMC) Biolox-delta(r) are pointed out in the literature. This study is a prospective monocentric evaluation of 32 and 36 mm AMC/AMC bearing surfaces. 141 THA were included prospectively since 2006 in 127 patients. (62 females, 65 males, mean age 62, 2 years, mean BMI 25, 5). 134 cases were primary implantations. Mean follow-up is 40.9 months (29.8-53.4). In all patients we used the same cementless stem and cup. Clinical and radiological data were evaluated with a special attention for ceramic fracture and squeaking.Introduction
Material and methods
243 were implanted for primary surgery with 32 or 36 mm ball heads for a 10–12, 6° tapers. In 80 cases, we used 32 and 36 mm Delta® sleeved heads (M,L,XL) for the adaptation on 12–14,5°43 tapers or 10–12, 6° tapers (acetabular revisions in absence of stem exchange, or to increase the lenght of the femoral neck and the offset) All the clinical and radiological files were evaluated at a minimum 2 years follow-up with a special attention for the fracture risk and squeaking. Radiological data were analysed using Dicomesure® software.
