Abnormal rate of intraoperative and postoperative implant positioning outliers using 'MRI-based patient-specific' compared to 'computer assisted' instrumentation in total knee replacement

摘要

The aim of this study was to analyze first intraoperative alignment and reason to abandon the use of patient-specific instrumentation using intraoperative CAS measurement, secondly assess by postoperative CT analysis if CI, based on preoperative 3D-MRI data, improved postoperative component positioning (including femoral rotation) and lower limb alignment as compared with results obtained with CAS.