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Chronic exertional compartment syndrome

Skeletal Radiol. 2009 Dec;38(12):1153-61. Epub 2009 Jul 17.

Chronic exertional compartment syndrome of the forearm in motocross racers: findings on MRI.
Gielen JL, Peersman B, Peersman G, Roelant E, Van Dyck P, Vanhoenacker F, Roeykens J.

Department of Radiology, Antwerp University Hospital, Antwerp, Belgium. Jan.gielen@uza.be

Abstract
INTRODUCTION: The purpose of this prospective study was to demonstrate the findings of MRI in motocross racers with chronic exertional compartment syndrome (CECS) of the forearm.

MATERIALS AND METHODS: Racers with proven CECS and without CECS and male individuals not involved in strenuous activities with the forearm were included. Signal intensity (SI) and signal-to-noise ratio (SNR) obtained before and after exercise were compared (D-SNR).

RESULTS: Magnetic resonance imaging after exercise showed an increase in SI and SNR in the muscles on T2-WI. The SI increase was obvious in the flexor digitorum superficialis (FDS) and profundus (FDP) in all CECS patients. In addition, a minor SI and SNR increase in the extensor carpi radialis longus (ECRL) was noted. In the non-symptomatic group of motocross racers, there was only a minor increase in SI and the SNR, which was similar in the FDP and ECRL muscles. In the untrained individuals a remarkable increase in the SI and SNR of the FDS/FDP-ECRL was noted. This increased SI and SNR was not present in the majority of non-symptomatic racers.

CONCLUSION: Post-exertional MRI produces significant findings in CECS of the forearm. The motocross racers without post-exertional oedema in the FDP/FDS had no CECS.

PMID: 19609523 [PubMed - indexed for MEDLINE]

ベルギーからのMX関連の論文。
MXレーサーにおける前腕のchronic exertional
compartment syndrome (CECS)について。
CECSとは、労作（努力）性のコンパートメント症候群。
日本語では、筋区画症候群というらしい。
前腕には屈筋群、伸筋群、橈側伸筋群の3つの
コンパートメントがある。何らかの原因で
コンパートメント内の圧力が高まると、コンパートメント内の
血管が圧迫されて循環障害が発生、筋や神経の機能障害がおきる。
慢性のものはスポーツ関連で多いらしい。