Comparison of minimally invasive TKA using the midvastus or medial parapatellar approach .
Mini-midvastus versus mini-medial parapatellar approach for minimally invasive total knee arthroplasty: outcomes pendulum is at equilibrium
J Arthroplasty. 2014 Feb;29(2):339-4240 patients scheduled for staged bilateral total knee arthroplasty one week apart were randomized to have surgery on one knee through a minimally invasive midvastus approach and on the other knee through a minimally invasive medial parapatellar approach. Parameters of surgical outcome were monitored intra- and perioperatively, and clinical outcome was assessed over 2 years of follow-up. Estimated blood loss, incision length, incidence of lateral release, duration of surgery, and length of hospital stay were all statistically similar between groups. Few differences were observed in clinical outcome between groups, with no consistent patterns established. Knee Society Score improved in both groups within 6 weeks, and continued improving throughout follow-up.
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