Patient-Specific Instrumentation Does Not Shorten Surgical Time: A Prospective, Randomized Trial
Aim of the study:
To determine whether total knee arthroplasty using patient specific instrumentation shortens surgical time
Materials and Methods:
- The study also focused to compare the no: of instrument trays and alignment used for cases in patient specific instrumentation with those cases performed with traditional instrumentation(Tl).
- To measure the length of surgery as well as each individual surgical step,a total of 52 cases(26/group)were randomised and videotaped.For each patient component alignment and mechanical axis was measured radiographically.
Results:
- The study showed that ,for patients in TI group the total surgical time was over 4 minutes shorter than in the other group.(57.4 minutes vs 61.8 minutes;p<0.01).Instrument trays were used more in the TI group than the other group(7.3 vs 2.5;p<0.001).The postoperative long alignment radiograhs showed no significant difference in mechanical alignment between the two groups(p=0.77).
Conclusion:’
- This prospective randomized trial concluded that PSI neither shortens surgical time nor improve alignment but reduces the no:of trays required.
Ref:
1. http://www.arthroplastyjournal.org/article/S0883-5403%2813%2900480-4/abstract
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