Ron A. Porterfield

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BACKGROUND Injuries to the elbow joint in baseball pitchers appear common. There appears to be a correlation between shoulder range of motion and elbow injuries. PURPOSE To prospectively determine whether decreased ROM of the throwing shoulder is correlated with the onset of elbow injuries in professional baseball pitchers. STUDY DESIGN Cohort study;(More)
BACKGROUND The loss of glenohumeral internal rotation range of motion in overhead athletes has been well documented in the literature. Several different methods of assessing this measurement have been described, making comparison between the results of studies difficult. HYPOTHESIS Significant differences in the amount of internal rotation range of motion(More)
Wilk, Macrina, and Fleisig, et al. have recently published a fourth study in a series of prospective cohort studies examining the relationship between shoulder passive range of motion and risk of injury in professional baseball players over the course of 8 competitive seasons. A total of 296 pitchers were evaluated each year starting in 2005 for passive(More)
This open-access article is published and distributed under the Creative Commons Attribution NonCommercial No Derivatives License (http://creativecommons.org/licenses/by-nc-nd/3.0/), which permits the noncommercial use, distribution, and reproduction of the article in any medium, provided the original author and source are credited. You may not alter,(More)
This open-access article is published and distributed under the Creative Commons Attribution NonCommercial No Derivatives License (http://creativecommons.org/licenses/by-nc-nd/3.0/), which permits the noncommercial use, distribution, and reproduction of the article in any medium, provided the original author and source are credited. You may not alter,(More)
BACKGROUND Shoulder injuries from repetitive baseball pitching continue to be a serious, common problem. PURPOSE To determine whether passive range of motion of the glenohumeral joint was predictive of shoulder injury or shoulder surgery in professional baseball pitchers. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS Passive range of motion(More)
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