Unicompartmental arthroplasty. Results in Sweden 1986-1995.

Since 1975 the Swedish Knee Register founded by the Swedish Orthopaedic society records primary knee arthroplasties and their revisions to evaluate indications, type of implants, revision rates etc. In the following, the results of unicompartmental arthroplasties (UKAs) are described. In osteoarthrosis UKAs have higher revision rates than total knee arthroplasties (TKAs), but a lower risk of serious complications and infections. Patients with medial UKA were as satisfied as patients with TKA. Furthermore, UKA is considerably cheaper than TKA. Therefore the use of an UKA seems to be a good alternative in appropriate patients.