Patient-specific instrumentation (PSI) is a novel technique in total knee arthroplasty (TKA) which potentially permits more accurate alignment of the components; however, there is no consensus in literature regarding the accuracy and reliability of PSI as many studies have shown controversial and inconsistent results of various PSI systems. A 24-month follow-up study was carried out to compare perioperative clinical outcomes, radiological limb alignment and component positioning, as well as functional outcomes following TKA between PSI and conventional instrumentation (CI). During September 2011 and August 2012, 90 consecutive patients were scheduled to undergo unilateral TKA with either PSI or CI. TruMatch® Personalised Solutions was used in this study, and a senior surgeon performed all operations. Patients were clinically assessed before, 6-month and 24-month after surgery.Objective
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