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|Title:||The Unispacer knee implant|
|Citation:||Journal of Bone and Joint Surgery: British Volume, 2008; 90-B(4):446-450|
|Publisher:||British Editorial Soc Bone Joint Surgery|
|A. G. Bailie, P. L. Lewis, S. A. Brumby, S. Roy, R. S. Paterson and D. G. Campbell|
|Abstract:||The Unispacer knee system is a cobalt-chrome self-centring tibial hemiarthroplasty device for use in the treatment of isolated medial compartment osteoarthritis of the knee. The indications for use are similar to those for high tibial osteotomy, but insertion does not require bone cuts or component fixation, and does not compromise future knee replacement surgery. A prospective study of a consecutive series of 18 patients treated with the Unispacer between June 2003 and August 2004 was carried out to determine the early clinical results of this device. The mean age of the patients was 49 years (40 to 57). A total of eight patients (44%) required revision within two years. In two patients revision to a larger spacer was required, and in six conversion to either a unicompartmental or total knee replacement was needed. At the most recent review 12 patients (66.7%) had a Unispacer remaining in situ. The mean modified visual analogue score for these patients at a mean follow-up of 19 months (12 to 26) was 3.0 (0 to 11.5). The mean pain level was 30% that of the mean pre-operative level of 10. The early clinical results using this device have been disappointing. This study demonstrates that use of the Unispacer in isolated medial compartment osteoarthritis is associated with a high rate of revision surgery and provides unpredictable relief of pain.|
Range of Motion, Articular
Arthroplasty, Replacement, Knee
|Rights:||Copyright © 2008 by British Editorial Society of Bone and Joint Surgery|
|Appears in Collections:||Aurora harvest 5|
Orthopaedics and Trauma publications
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