Letter to the Editor: Patient-Specific Instrumentation Does Not Shorten Surgical Time: A Prospective, Randomized Trial

摘要

We are surprised to read the conclusions of this RCT, which compared the time taken to do a primary TKA using conventional jigs and PSI [1 ]. The conclusions of this study are not in agreement with the previously published studies or with our experience. Most studies either report significant or non-significant differences in the duration of the surgery between the PSI and traditional groups with decreased duration of surgery in PSI group [2-5]. This seems logical, in our view, since almost one-third of the operative steps are not required in PSI group and hence saving the total operative time. We appreciate the self-confession of the authors, about the shortcomings and weaknesses of their study, like limited experience of the surgeon to use PSI technology.