Fig. 1 From: Hospital volume and the risk of revision in Oxford unicompartmental knee arthroplasty in the Nordic countries -an observational study of 14,496 cases14,496 cemented medial Oxford III UKA from 2000 to 2012 were selected for inclusion in this study. Other diagnoses than osteoarthritis were excluded. Abbreviations: NARA = Nordic Arthroplasty Register Association, OA = osteoarthritisBack to article page