Open Access Research Articlethe bursae play an important role in the suppression of friction associated with those movements. We hypothesized that friction of the subscapularis tendon coiling along the coracoid process often causes pain during throwing motion and investigated in which position pain would occur in a clinical scenario. MethodsThis study involved 110 baseball players who visited our hospital for consultation regarding their symptoms and who were followed up for at least 6 months. All were men with an average age of 27 years (range, 16-36 years). The dominant arm was affected in all players. The subjects comprised 52 high schooling, 11 collegiate, 9 professional, and 38 recreational level players. Their baseball playing positions were 50 pitchers, 9 catchers, 19 infielders, and 32 outfielders. Clinical featuresAll players complained of shoulder pain during throwing, especially in the acceleration phase, and stated that their performance level was decreased owing to throwing pain. The passive glenohumeral range of motion was assessed using a large goniometer. Angles of internal and external rotations in the coronal plane at 90° of abduction were measured in bilateral sides. Measurements were recorded with each subject lying supine to stabilize the scapula. The dominant extremity showed more external rotation at 90° of abduction and less internal rotation at 90° of abduction than did the contralateral extremity. The mean external rotation and internal rotation with the dominant extremity were 105° ± 13° and 50° ± 12°, respectively, and those with the contralateral extremity were 101° ± 14° and 59° ± 11°, respectively. Distension arthrographyTen milliliters of dye compounded with 10 ml of local anesthetic was injected into the joint. In 29 patients (26%), leakage or pooling of the dye in the supraspinatus or infraspinatus tendons occurred (Figure 1). After evaluation, the shoulder was forced to internally rotate to distend the dye to the subscapularis bursa. This direction of dye distension was confirmed with plain radiographs after arthrography (Figure 2). In 14 patients, the dye also leaked from the bicipital groove. AbstractLittle attention has been paid to a role of the subscapular bursa keeping smooth movement of the shoulder. We hypothesized that irritation in the subscapular bursa causes throwing pain and investigated in which position pain would occur in a clinical scenario and effectiveness of distension arthrography for pain relief in baseball players. One hundred and ten baseball players with shoulder pain were enrolled in this study. All underwent examination of whether pain was provoked with arm rotation at different angles of abduction before and after arthrography. Factors including skill level, playing position, symptom duration, and concurrent injury of the rotator cuff tendon were investigated to affect the results. All patients experienced pain with external rotation at 135° of abduction before arthrography, and the pain was reduced after arthrography in 92 players (84%). Thirty-thre...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.