Wear in uncemented porous and cemented polyethylene sockets: a randomised, radiostereometric study.
We used radiostereometric analysis to compare wear rates between uncemented porous sockets and cemented all-polyethylene sockets in a series of 102 hips randomised for either a Harris-Galante or a Charnley cup. Wear was evaluated in 95 hips at a mean of five years (2 to 7). All hips had a cemented, 22 mm head mono-bloc Charnley stem. The mean annual wear rate was 0.09 mm in the Charnley sockets and 0.10 mm in the Harris-Galante sockets, with no statistically significant differences in wear, migration or rotation. We conclude that, up to five years, the wear characteristics of the modular and porous Harris-Galante socket resemble that of the Charnley socket.
Onsten
I
I
Malmö University Hospital, Sweden.
Carlsson
A S
AS
Besjakov
J
J
D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery; D000328:Adult; D000368:Aged; D000497:Alloys / Q000737:chemistry; D019644:Arthroplasty, Replacement, Hip; D002484:Cementation; D005069:Evaluation Studies as Topic; D005260:Female; D005269:Femur / Q000601:surgery; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D016018:Least-Squares Analysis; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D010780:Photogrammetry; D011095:Polyethylenes / Q000737:chemistry*; D016062:Porosity; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012044:Regression Analysis; D012399:Rotation; D013499:Surface Properties; D013526:Surgical Mesh; D014025:Titanium / Q000737:chemistry*
D000497:Alloys; D011095:Polyethylenes; C031462:titanium alloy (TiAl6V4); D014025:Titanium