MR Arthrography of the Shoulder in Professionnal Baseball Players

Abstract

[purpose] We evaluated the findings of MR arthrography (MRA) of professional baseball players.
[Materials and methods] The MRAs of 29 shoulders in 29 professional baseball players were taken, excluding dislocation, subluxation and painful Bennett lesion. The average age was 24.9 years old (range: 18 31). There were 25 pitchers and 4 fielders.22 right and 6 left shoulders. The MRA findings of BLC were classified as follows: linear appearance: typeI, cleft appearance: typeII, intra-superior labrum linear appearance: typeIII, These lesions were observed in 1 or 2 slices: type A, and in more than 3 slices: type B. Furthemore we evaluated their high signal intensities of the supraspinatus tendon and cystic changes in the posterior greater tuberosity. We also statistically examined.
[Results] BLleCs ions were found in 17 shoulders. (TypeI A: 5, I B: 1, II A: 1, II B: 9: III B: 1). High signal intensities in the articular side of the supraspinatus tendon were recognized in 13 shoulde rs, and cystic changes were found in 16 shoulders. There was no correnlation among the MRA findings, and between throwing pain and the MRA findings.
[Conclusion] There were many BLC lesions in professional base ballplayers, but no correlation with throwing pain. It is necessary to evaluate throwing shoulders totally.