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MAINTAINING STANDARDS IN TOTAL KNEE ARTHROPLASTY: USE OF A COMPUTER BASED ASSESSMENT TOOL IN MONITORING POST-OPERATIVE RADIOLOGICAL OUTCOME



Abstract

Purpose of study: With the increasing demand for arthroplasty surgery, it is important to maintain a high quality of care. We describe a clinical governance framework for a simple, easy to implement method of assessing and monitoring radiological outcome following total knee arthroplasty.

Methods: We completed a two-year prospective study (January 2006 to December 2007 inclusive) of all total knee arthroplasty operations. This included 1,295 procedures, the majority of which were undertaken by two Consultant Surgeons and up to eight independent middle grade surgeons. The two Consultant Knee Surgeons assessed component position on standard post-operative weight-bearing antero-posterior and lateral knee radiographs on a weekly basis. They were blinded to both the patient and surgeon details, and used our own simple grading system, whose weighted Kappa variance showed ‘moderate’ interobserver (K = 0.41) and intraobserver reliability (K = 0.51). Our system comprised of only three ordinal scores, which were good (score of 1), acceptable (score of 2) and poor (score of 3).

Results: We provided individual surgeons with their results on a six-monthly basis. The average score for all the surgeons was good. The scores of the independent middle-grade surgeons were analysed by the Consultants, and feedback was provided in the form of formal advice and supervised surgery sessions. Repeat proportional analysis of their radiological scores showed significant improvements for all the individual surgeons (Pearson-Chi Square p value < 0.05).

Conclusions: Clinical governance is an important facet of excellence in medical practice. Our system allows continued prospective assessment of radiological outcome following total knee arthroplasty. By utilising such systems and ensuring an atmosphere of clinical excellence, we are able to employ more surgeons and undertake an increased workload, whilst maintaining high standards. This assessment tool can also be used to assess and appraise trainees during their progression.

Correspondence should be addressed to: EFORT Central Office, Technoparkstrasse 1, CH – 8005 Zürich, Switzerland. Tel: +41 44 448 44 00; Email: office@efort.org

Author: Aswinkumar Vasireddy, United Kingdom

E-mail: avasireddy@doctors.org.uk