Snapping Scapula Syndrome

What is snapping scapula syndrome? Snapping scapula syndrome is a condition causing painful grinding, clicking or snapping of the shoulder blade (Figure 1). The shoulder joint itself is called the glenohumeral joint. The acromioclavicular joint is associated with shoulder separation. Snapping scapula occurs at the scapulothoracic joint and is different from other shoulder related problems (Figure 2). Over 1/3 of the shoulder movement occurs between the scapula and the thoracic cage. The shoulder blade serves as an anchor for the subscapularis and serratus anterior muscles (Figure 3). These muscles as well as the bursa provide for smooth movement of the shoulder. With muscle weakness or inactivity, the scapula may rub on the rib bones during movement. Snapping scapula can be caused by repetitive motions that lead to inflammation of the bursa or atrophy of the muscles under the scapula (Figure 4). When the scapula cannot easily glide along the chest wall, the bones rub together and produce the characteristic noise sensation, painful clicking and grinding. It can be a secondary symptom to shoulder instability, such as dislocation or nerve disorders, which may lead to atrophy and weakened muscles. The patient may develop scarring and fibrosis of the bursa, as well as painful scapular crepitus when moving the shoulder blade. Common Causes Snapping scapular syndrome may be caused be weakness, wasting or atrophy of the scapular stabilizing muscles, bursitis, ost...
Source: Healthy Living - The Huffington Post - Category: Consumer Health News Source Type: news