Influence of polyethylene and femoral head surface quality on wear: A retrieval study

Citation
K. Haraguchi et al., Influence of polyethylene and femoral head surface quality on wear: A retrieval study, INT ORTHOP, 25(1), 2001, pp. 29-34
Citations number
40
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Ortopedics, Rehabilitation & Sport Medicine
Journal title
INTERNATIONAL ORTHOPAEDICS
ISSN journal
0341-2695 → ACNP
Volume
25
Issue
1
Year of publication
2001
Pages
29 - 34
Database
ISI
SICI code
0341-2695(200103)25:1<29:IOPAFH>2.0.ZU;2-6
Abstract
Thirty-two polyethylene sockets and 22 femoral heads were retrieved because of aseptic loosening more than 9 years after total hip arthroplasty. The v olumetric wear rates of the retrieved polyethylene sockets were significant ly greater in those coupled with an alumina head (P <0.05). The retrieved a lumina heads showed significantly better surface roughness and roundness th an heads of Co-Cr and of stainless steal (P <0.05). However, no significant difference was found in polyethylene quality demonstrated as fusion defect s among the three different groups. The present study suggests that maintai ning better surface roughness and roundness of the femoral heads does not a lways result in an in vivo reduction of polyethylene wear.