Comparison of MRI and arthroscopy on defect area measurement of knee joint cartilage

VernacularTitle:MRI与关节镜测量膝关节软骨缺损面积的对比
Author: Yulin MAN ; Youmin GUO ; Xiaobin LIU ; Qing SUN ; Ying WANG
Publication Type:Journal Article
Keywords: magnetic resonance imaging; arthroscopy; articular cartilage; the knee; defect area
From: Journal of Practical Radiology 2015;(1):113-115,120
CountryChina
Language:Chinese
Abstract: Objective To explore the consistency of knee articular cartilage defect area by magnetic resonance imaging (MRI)and arthroscopy.Methods Thirty-six patients (36 knees)with knee cartilage lesions were collected in our study.The defect area meas-urement of knee articular cartilage by MRI and arthroscopy was compared.Results A total of 92 lesions were detected by both MRI and arthroscopy with an average of 2.6 defects per knee.Preoperative MRI resultes demonstrated the mean defect area per knee was (1.9±1.5)cm2 ,while arthroscopic measurement after debridement indicated the mean defect area per knee was (2.9±2.6)cm2 , which had significant difference(P <0.001).The area measured by MRI was less than that by arthroscopy,and the mean difference was (1.7 ± 1.1)cm2 .The mean area measured by MRI was 70.1% of that by arthroscopy.Conclusion Arthroscopy and MR have good consistency in the number of articular cartilage defect lesions .MRI can reflect the knee articular cartilage defect area directly or indirectly,and be capable of accurate positioning and qualitative diagnosis.