Radiographic evaluation of HDPE cemented and cementless Lord and An.C.A. screwed acetabular models.

A. Toni, A. Sudanese, M. Viceconti, P. P. Montina, D. Ciaroni, F. Calista, S. Terzi, A. Giunti

Research output: Contribution to journalArticlepeer-review

Abstract

A total of 187 alumina screwed porous-ceramic coated sockets (An.C.A.), 48 screwed smooth-surfaced Lord sockets, and 251 cemented polyethylene sockets were radiographically evaluated at an average follow-up of 30, 51 and 96 months respectively. After 6 years the Lord prostheses revealed a 38% incidence of loosening, similar to that observed for cemented sockets 10-12 years after surgery. The An.C.A. prostheses revealed radiographic loosening equal to 12% (6 cases) in the first 50 implants, and only 0.7% in the remaining 137 cases: overall, the An.C.A. acetabular prosthesis revealed an index of radiographic loosening equal to 3.3% (7/187). To guarantee "osteointegration" of the porous coating of An.C.A. sockets optimal stability must be obtained when the prosthesis is screwed in. Because the mid-term follow-up for this clinical experience is relatively short (30 months), an opinion on the reliability of the screwed "porous" sockets must await confirmation.

Original languageEnglish
Pages (from-to)405-411
Number of pages7
JournalLa Chirurgia degli organi di movimento
Volume77
Issue number4
Publication statusPublished - Oct 1992

ASJC Scopus subject areas

  • Medicine(all)

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