Comment on article by Pinsornsak Piya et al.: The effect of immediate post-operative knee range of motion photographs on post-operative range of motion after total knee arthroplasty: an assessor-blinded randomized controlled clinical trial in sixty patients

Abstract

Dear Editor, We read with great interest the article “The effect of immediate post-operative knee range of motion photographs on post-operative range of motion after total knee arthroplasty: an assessor-blinded randomized controlled clinical trial in sixty patients” by Pinsornsak Piya et al. [1]. In addition to the deep appreciation of the author’s great efforts, we also would like to point out some problems that we consider will contribute to the validity of this research.