29 Apr 2010. Joint effusion, commonly referred to as water on the knee or fluid on the knee, is the abnormal accumulation of fluid in or around a joint. Other bursae are: Infraspinatus Bursa: between the infraspinatus tendon and the capsule of the joint. Subacromial-subdeltoid and subcoracoid bursa are most frequently involved and will therefore be described in detail. Similarly the subcoracoid bursae are found between the capsule and the coracoid process of the scapula. capsule [kap´sul, kap´sūl] 1. an enclosing structure, as a soluble container enclosing a dose of medicine. Throughout a daily routine, each joint capsule of the body will normally be stretched in the previous manner several times per day. It can become inflamed due to overuse or trauma, which can result in muscle tightness or imbalance. adj., adj cap´sular. The subacromial and the subdeltoid bursa are often taken as a single bursa, the subacromial deltoid bursa. Numerous serous bursae are situated among muscles, skin, subcutaneous tissues, joint capsule structures and bones to prevent friction and they can be evaluated by US only in the presence of pathologies.
Capsule. This bursa helps reduce rubbing and friction between the bones and soft tissues that meet at your hip joint capsule. The deltoid muscle abducts the arm, which is a common motion performed while lifting heavy objects. Anatomy of the shoulder (glenohumeral joint/scapulo-thoracic joint) It herniates through the anterior aspect of the capsule to communicate with the subscapularis bursa. 2. a cartilaginous, fatty, fibrous, or membranous structure enveloping another structure, organ, or part. It is most commonly caused by infection, injury, and arthritis. Numerous serous bursae are situated among muscles, skin, subcutaneous tissues, joint capsule structures and bones to prevent friction and they can be evaluated by US only in the presence of pathologies. Subcutaneous prepatellar bursa: Between the anterior surface of the patella and the skin that covers it Subcoracoid Bursa: between the coracoid process of the scapula and the shoulder joint capsule. Sometimes it communicates with the infraspinatus bursa posteriorly. A healthy joint capsule will allow this movement to take place smoothly and without restriction. Gastrocnemius bursa: Between the tendon of the medial head of the gastrocnemius muscle and the joint capsule. This in itself is strong and fibrous, strengthening the joint. In addition to swelling, joint effusion is associated with pain and stiffness. Iliopsoas bursitis is most commonly caused by: Hip Pathology