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Int J Sports Med. 2020 Jan 20. doi: 10.1055/a-1083-6580. [Epub ahead of print]

Femoropatellar Joint Reaction Detected During a 4486 KM Ultramarathon with Mobile MRI.

Author information

1
Department of Diagnostic and Interventional Radiology, University of Ulm, Ulm, Germany.
2
Department of Orthopaedics, Landesklinikum Amstetten, Amstetten, Austria.
3
MR Centre of Excellence, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Wien, Austria.
4
Department of Radiology, Division of Neuroradiology and Musculoskeletal Radiology, Medical University of Vienna, Wien, Austria.
5
Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Wien, Austria.
6
Department of Radiology, MR Centre-High field MR, Medical University of Vienna, Wien, Austria.

Abstract

Almost nothing is known about the condition of the knee joints of multistage ultra-marathon (MSUM) runner. This is first image-based investigation of the femoropatellar joint (FPJ) using a mobile 1.5T MRI accompanying the MSUM TransEurope Foot-Race (TEFR) 64 stages over 4486 km. Twenty-two (20 male) subjects got a knee MRI-protocol at defined measurement intervals during TEFR: T2*-mapping (FLASH T2*-GRE), TIRM, and fat saturated PD -sequence. In the FPJ 12 different regions were evaluated regarding cartilage T2* and thickness changes and cartilage lesions in course of TEFR and a test on possible compounding factors (running burden, BMI, age) was done if being appropriate. No significant changes in cartilage thickness- and T2*-values were found during TEFR. In 8 runners, at least one single cartilage lesion (Grade 2-3) was found at baseline, but no significant race-related adjacent T2*-changes or progress of the defects could be detected. Analyses on compounding factors were negative. In knees with MPP (5) significantly lower adjacent T2*-values were found. The extreme running burden of a MSUM seems not to have a relevant negative influence on the FPJ tissues, even if cartilage lesions are present.

PMID:
31958873
DOI:
10.1055/a-1083-6580

Conflict of interest statement

The authors declare that they have no competing interests. There are no financial or non-financial competing interests of other people or organizations influencing our interpretation of data or presentation of information.

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