Is there a need for early post-operative x-rays in primary total knee replacements? Experience of a centre in the UK

Abstract

INTRODUCTION Early post-operative x-rays are often taken in total knee replacements (TKRs). Patient mobilisation may be delayed until these x-rays are obtained and this may prolong discharge. The aim of this study was to assess the value of such early x-rays and whether they influenced the early post-operative management of these patients. METHODS A total of 624 consecutive TKRs performed at the Blackpool Victoria Hospital over a 34-month period were evaluated. Plain anteroposterior and lateral x-rays were examined. RESULTS Two patients were found to have significant abnormalities: an undisplaced peri prosthetic tibial fracture and a partial inferior pole patellar avulsion. Neither of these required further treatment or influenced mobility. No other complications were noted that changed routine post-operative management. CONCLUSIONS These results question the need for immediate x-rays in primary TKRs.