JOURNAL OF ORTHOPAEDIC & SPORTS PHYSICAL THERAPY 2014

Shoulder pain is the second most common musculoskeletal complaint, with a reported point prevalence of 20.9% of the general population. In part one of this study the objective is to compare sternoclavicular, acromioclavicular, and scapulothoracic joint motion between symptomatic and asymptomatic individuals during shoulder motion performed in 3 planes of humerothoracic evaluation. Transcortical bone pins were inserted into the clavicle, scapula, and humerus of 12 asymptomatic and 10 symptomatic individuals for direct, bone-fixed tracking using electromagnetic sensors. Angular positions for the sternoclavicular, acromioclavicular, and scapulothoracic joints were measured during shoulder flexion, abduction and scapular plane abduction.

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