In:
The Journal of Bone and Joint Surgery. British volume, British Editorial Society of Bone & Joint Surgery, Vol. 79-B, No. 3 ( 1997-05), p. 361-365
Abstract:
We made a clinical study of polyethylene wear in 240 hips of 187 patients having primary total hip arthroplasties from 1989 to 1990, using uncemented Osteonics components, with a head size of 26 mm. We excluded cups with anteversion of over 20° and measured linear wear by a new method using a digitiser and special software of our design. Follow-up was from two to five years (mean 4.3). The mean age at operation was 50.3 years, with more men than women (1.4:1). The mean linear wear per year was 0.15 mm; this did not increase with the longevity of the prosthesis (p = 0.54). In 59 hips showing evidence of osteolysis, the mean linear wear rate was significantly higher at 0.23 mm/year (p 〈 0.001). The mean linear wear rate also correlated significantly with age at the time of operation (p = 0.008), but we found no significant correlations with body-weight, gender, aetiology of the disease, thickness of polyethylene, or cup position. Our new method of measurement is time-saving and reproducible. The results confirm the greater rate of linear wear of polyethylene in patients showing osteolysis and in those who are younger.
Type of Medium:
Online Resource
ISSN:
0301-620X
,
2044-5377
DOI:
10.1302/0301-620X.79B3.0790361
Language:
English
Publisher:
British Editorial Society of Bone & Joint Surgery
Publication Date:
1997
detail.hit.zdb_id:
2697480-0
detail.hit.zdb_id:
2039886-4
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