Objective: The aim of this study was to review the radiological alignment outcomes of patient Specific (PS) cutting blocks and Standard Instrumentation in Primary Total Knee Arthroplasty.
Methods: We hypothesized that the use of PS techniques would significantly improve sagittal, coronal and rotational alignment of the prosthesis on short term. We performed a systematic review and a meta-analysis including all the randomised controlled trials (RCT) using PS and standard (ST) total knee arthroplasty to date.
Results: A total of 538 PS TKA and 549 ST TKA were included in the study. Statistical analysis of the outliers for femoral component sagittal, coronal and rotational positioning, tibial component sagittal and coronal positioning and the overall mechanical axis were assessed. We found that there was no significant benefit from using PS instrumentation in primary knee arthroplasty to aid in the positioning of either the tibial or femoral components. Furthermore sagittal plane tibial component positioning was worse in the PS than the traditional ST group.
Conclusion: Our results suggest that at present PS instrumentation is not superior to ST instrumentation in primary total knee arthroplasty.
Level Of Evidence: Level 1, Systematic review of therapeutic studies.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6197451 | PMC |
| http://dx.doi.org/10.1016/j.aott.2017.02.001 | DOI Listing |
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