Reliability in arthroscopic grading of cartilage lesions: results of a prospective blinded study for evaluation of inter-observer reliability.

Introduction And Aim: Arthroscopy is a well-established method for grading cartilage lesions. This study was undertaken to evaluate the inter-observer variance of grading cartilage lesions in a real life operation.

Materials And Methods: Four experienced arthroscopic surgeons used diagnostic arthroscopy, one after the other, to grade cartilage lesions in a total of 16 patients who had undergone knee arthroscopy.