Total condylar knee arthroplasty: Prosthetic component positioning and radiolucent lines
- 1 January 1984
- journal article
- research article
- Published by Medical Journals Sweden AB in Acta Orthopaedica
- Vol. 55 (2), 160-165
- https://doi.org/10.3109/17453678408992329
Abstract
Prosthetic positioning and overall postoperative alignment were studied in 138 consecutive total knee replacements, using the Insall/Burstein® total condylar knee system. Overall alignment was within 7 ± 5 degrees of valgus in 63 per cent of the knees, while tibial component positioning was within 4 degrees of tilt in any direction in 53 per cent of the knees. A radiolucency index incorporating width and extent of radiolucent zones at the tibia was shown to progress from 3 months to 2 years postoperatively. The radiolucency index 2 years postoperatively was higher with postoperative varus alignment in the rheumatoid arthritis group; a tibial component tilt of more than 4 degrees in any direction increased the radiolucency index in both treatment groups.Keywords
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