Modular cementless cup for total hip arthroplasty: results at 4-year follow-up.
The aim is to perform the assessment of a modular cementless acetabular cup with a tapered internal design for all bearing couplings. In 190 unselected consecutive patients, 207 total hip arthroplasties were implanted. The implants were clinically and radiographically evaluated. Follow-up was 49.7 ± 8.1 months. The average Harris hip score improved from 55.5 ± 5.7 to 94.7 ± 3.4 (P < 0.05). All cups were well-positioned and stable. The Kaplan-Maier cumulative survivorship was 98.5 ± 0.8%. No significant differences have been noted in dividing patients according to the different liner materials (P < 0.005). The study, whose rationale is the novelty of this kind of implant, suggests the efficacy of the Delta-PF acetabular cup.
Department of Orthopedics and Traumatology, CTO/M. Adelaide Hospital, Turin, Italy. alessandro.bistolfi@cto.to.it
Alessandro
A
Bistolfi
Giuseppe
G
Massazza
Federica
F
Rosso
Stefano
S
Ventura
Francesco
F
Lagalla
Maurizio
M
Crova
D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000497:Alloys; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods / Q000534:rehabilitation; D020099:Coated Materials, Biocompatible; D004867:Equipment Design; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D011859:Radiography; D014025:Titanium; D016896:Treatment Outcome
D000497:Alloys; D020099:Coated Materials, Biocompatible; C031462:titanium alloy (TiAl6V4); D014025:Titanium