cerebrospinal fluid causes fluid in the subacromial subdeltoid bursa.
cerebrospinal fluid causes fluid in the subacromial subdeltoid bursa.
what causes fluid in the subacromial subdeltoid bursa?
cerebrospinal fluid
the literature on the pathophysiology of bursitis describes inflammation as the primary cause of symptoms. inflammatory bursitis is usually the result of repetitive injury to the bursa. in the subacromial bursa, this generally occurs due to microtrauma to adjacent structures, particularly the supraspinatus tendon. the inflammatory process causes synovial cells to multiply, increasing collagen formation and fluid production within the bursa and reduction in the outside layer of lubrication..









































less frequently observed causes of subacromial bursitis include hemorrhagic conditions, crystal deposition and infection.
subacromial bursitis
subacromial bursa









































the subacromial bursa is the synovial cavity located just below the acromion, which communicates with the subdeltoid bursa in most individuals, forming the so-called subacromial-subdeltoid bursa (ssb).









































the ssb bursa is located deep to the deltoid muscle and the coracoacromial arch and extends laterally beyond the humeral attachment of the rotator cuff, anteriorly to overlie the intertubercular groove, medially to the acromioclavicular joint, and posteriorly over the rotator cuff. the ssb decreases friction and allows free motion of the rotator cuff relative to the coracoacromial arch and the deltoid muscle.
subacromial bursa