Re: Comparison of the early results of minimally invasive vs standard approaches to total knee arthroplasty: a prospective, randomized study.

摘要

We read with interest with the well-written article entitled "Comparison of the Early Results of Minimally Invasive Vs Standard Approaches to Total Knee Arthroplasty: A Prospective, Randomized Study" by Karpman and Smith [1]. Their eligible patients were randomized into 3 groups: a quad sparing, mini midvastus, or standard approach to total knee arthroplasty. The authors used repeated t tests to compare continuous variables among 3 groups, and significance levels were not adjusted for multiple testing, which are not appropriate. The authors set the significance level at .05, the probability of a type I error.