Scapular Position and Orientation in Symptomatic Throwing Shoulders: a Cross-sectional Study Using 3d-to-2d Registration Technique
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چکیده
INTRODUCTION Shoulder injuries are common in baseball players, which may be related to scapular malposition (Burkhart 2003). Although a few studies demonstrated scapular malposition in baseball players using clinical measurement (Laudner 2010, Thomas 2010), no data currently exist that demonstrated 3-dimentional (3D) scapular position and orientation using a technique that eliminates skin artifact. Therefore, the purpose of this study was to determine if there was any 3D scapular malposition in throwers with shoulder pain. As a previous study showed forward scapular posture in asymptomatic baseball players (Laudner 2010), we hypothesized that symptomatic dominant shoulders demonstrate decreased upward rotation and increased scapular anterior tilting compared with the asymptomatic contralateral shoulders.
منابع مشابه
No effect of scapular position on 3-dimensional scapular motion in the throwing shoulder of healthy professional pitchers.
CONTEXT Differences in 3-dimensional (3D) scapular motion have been reported between healthy baseball position players and healthy nonoverhead athletic controls, as well as players diagnosed with shoulder impingement syndrome. These alterations are theorized to be the result of adaptations due to the demands of repetitive throwing. However, comparisons between the throwing and nonthrowing shoul...
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BACKGROUND Although scapular malpositioning is commonly associated with rotational deficits and risk of injury, modifiable causes of such malpositioning in overhead athletes are not well described. PURPOSE/HYPOTHESIS The purpose of this study was to examine the scapulothoracic profile of adolescent baseball players, specifically, pectoralis minor (PM) length. We hypothesized that PM would be ...
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BACKGROUND Despite the recognized importance of proper 3-dimensional motion of the scapula in throwers, minimal research has quantified scapular position and orientation in throwing athletes. HYPOTHESIS Throwing athletes exhibit scapular position and orientation differences when compared to nonthrowing control subjects. STUDY DESIGN Descriptive laboratory study. METHODS Scapular position ...
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BACKGROUND No clear trend has emerged from the literature regarding three-dimensional (3D) translations of the humerus relative to the scapula in shoulders with rotator cuff tears (RCTs). The purpose of this study was to evaluate the kinematics of RCT shoulders using 3D-to-two-dimensional (2D) model-to-image registration techniques. METHODS Dynamic glenohumeral kinematics during scapular plan...
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