Resurfacing hip arthroplasty. Classification of loosening and the role of prosthesis wear particles.

Abstract:

:Operative grading of loosening and histologic examination of the periprosthetic tissues and the femoral and acetabular bone-cement interfaces were undertaken in 72 revised resurfacing hip arthroplasties. By correlating the degree of macroscopic and microscopic loosening at the bone-cement interface, a classification of the stages of loosening at the bone-cement interface was devised. Examination of the femoral bone-cement interface of solidly fixed prosthesis components has demonstrated the presence of polyethylene wear particles and a macrophage response at the interface prior to loosening. This suggests that wear particles may migrate along bone-cement interfaces that are both macroscopically and microscopically solid, and emphasizes the important role of wear particles in prosthesis loosening.

journal_name

Clin Orthop Relat Res

authors

Howie DW,Cornish BL,Vernon-Roberts B

subject

Has Abstract

pub_date

1990-06-01 00:00:00

pages

144-59

issue

255

eissn

0009-921X

issn

1528-1132

pub_type

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