Reliability of patient specific instrumentation in total knee arthroplasty
Jennart, H.; Ngo Yamben, M.-A.; Kyriakidis, T.; Zorman, D.
Acta Orthopaedica Belgica 81(4): 668-672
2015
ISSN/ISBN: 0001-6462 PMID: 26790789 Document Number: 682214
The aim of this study was to compare the precision between Patient Specific Instrumentation (PSI) and Conventional Instrumentation (CI) as determined intra-operatively by a pinless navigation system. Eighty patients were included in this prospective comparative study and they were divided into two homogeneous groups. We defined an original score from 6 to 30 points to evaluate the accuracy of the position of the cutting guides. This score is based on 6 objective criteria. The analysis indicated that PSI was not superior to conventional instrumentation in the overall score (p = 0.949). Moreover, no statistically significant difference was observed for any individual criteria of our score. Level of evidence II.