2017 ISAKOS Biennial Congress ePoster #1099

 

A Comparative Study of a MRI Scoring System with Traditional Outcome Measures after Anterior Cruciate Ligament Reconstruction

Bing Wu, MD, Shenzhen, Guangdong CHINA
Wei Lu, MD, PhD, Prof., Shenzhen, Guangdong CHINA
Daping Wang, Shenzhen, Quong Dong Province CHINA
Weimin Zhu, MD, Shenzhen, Guangdong CHINA
Kan Ouyang, Shenzhen CHINA
Haifeng Liu, PhD, Shenzhen, Guangdong CHINA

sports medicine department, Shenzhen, Guangdong, CHINA

FDA Status Not Applicable

Summary

a proper MRI scoring system for ACL grafts had been investigated and found to be able to predict traditional clinical knee joint function of subjective and objective results.

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Abstract

Objective

To investigate an appropriate magnetic resonance imaging (MRI) scoring system for assessing anterior cruciate ligament (ACL ) graft health at different time after ACL reconstruction, and to determine if the MRI scoring results correlate with commonly used clinical knee joint function outcome measures results.

Methods

A subset of 54 participants were enrolled in an ongoing singel boundle ACL reconstruction clinical trial, AP knee laxity, IKDC score and MRI score of the ACL based on graft volume, signal intensity (SI) and graft tension were measured during the following-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 time of 18.3±4.3 months. The average score of AP knee laxity, IKDC and MRI assesment were 85.12±9.45, 83.07±12.63, 75.19±7.20 respectively. MRI scoring results and clinical knee joint function scoring were positively linear correlated, the correlation coefficient was statistically significant (r=0.696, P =0.001; r=0.767,P=0.000). The regression equation fitted 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 traditional clinical knee joint function of subjective and objective scoring, 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 evaluation system of ACL graft healing process.