Chinese Journal Of Clinical Anatomy ›› 2016, Vol. 34 ›› Issue (6): 677-684.doi: 10.13418/j.issn.1001-165x.2016.06.016

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A comparative study of a MRI scoring system with traditional outcome evaluation after anterior cruciate ligament reconstruction

WU Bing 1,2, LU Wei 1,2, WANG Da-ping 1,2, LIU Hai-feng 1,2, ZHU Wei-min 1,2, OU Yang-kan 1,2, LIDing-fu 3, LI Sheng4   

  1. 1. Department of Sports Medical, Shenzhen First Affiliated Hospital, Shenzhen University, Shenzhen 518000, China;  2. Shenzhen Digital Orthopaedic Engineering Laboratory, Shenzhen 518000, China;  3.Department of Radiology, Shenzhen First Affiliated Hospital, Shenzhen University, Shenzhen 518000, China; 4. Shenzhen University, Shenzhen 518060, China
  • Received:2016-02-22 Online:2016-11-25 Published:2016-12-20
  • Contact: LU Wei, E-mail:winerl@sina.com; WANG Da-ping, E-mail:dapingwang @medmail.com

Abstract:

Objective To investigate an appropriate method of magnetic resonance imaging (MRI)scoring system to assess anterior cruciate ligament (ACL ) graft health at different time after ACL reconstruction, and to determineif the MRI scoring results correlate with commonlyused clinicalknee joint function outcome evaluation results. Methods Based on a subset of 54 participants enrolled in an ongoing single bundle ACL reconstruction clinical trial, AP knee laxity, IKDC and a MRI scoring system based on graft volume,signal intensity (SI) and graft tension were assessed during the follow-up, and then correlation of MRI scoring results and traditional clinical knee joint function results were determined using the linear correlation and linear regression statistical methods in SPSS software. Results All the 54 patients were followed up with a mean follow-up period of 18.3±4.3 months. The average score of AP knee laxity, IKDC and MRI assessment were 85.12±9.45, 83.07±12.63, 75.19±7.20 respectively. MRI scoring results and clinical knee joint function scoring had positively linear correlation, and the correlation coefficient was statistically significant (r=0.696, P=0.001; r=0.767,P=0.000). The regression equationfitted according to the MRI score (X) and clinical knee joint function of subjective and objective score was statistically significant (P<0.01). MRI scoring can predict traditional clinical knee joint function of subjective and objective results. Conclusions Just as subjective and objective scoring of traditional clinical knee joint function , the MRI scoring system can also be used to assess outcomes of ACL reconstruction,thus supplementing and improving current clinical evaluation methods for ACL graft health and laying a foundation for a more scientific postoperative evaluation system of ACL graft healing process.

Key words: Anterior cruciate ligament, Clinical assessment, Magnetic resonance imaging (MRI), Function scores