Shoulder Pain. Shoulder Anatomy: Bony Anatomy. Humerus Scapula Glenoid Acromion Coracoid Scapular body Clavicle Sternum. Shoulder Anatomy: Joints. Glenohumeral Acromioclavicular. Sternoclavicular Scapulothoracic articulation. Glenohumeral Joint. Most common dislocated joint
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The supraspinatus tendon is relatively thick as it courses between the superior aspect of the humeral head and the inferior aspect of the acromion.
thesubacromial space. This space is occupied by the subacromial bursa. Laterally, the space and the bursa generally extend beyond the lateral aspect of the acromion underneath the deltoid muscle .
II. Chronic shoulder pain often has a less obvious cause. Common causes include:
In these conditions, motion loss is typically multifactorial rather than the result of isolated capsular restriction.
Adhesive capsulitis is characterized by :
Normal shoulder joint volumetric capacity is 28 to 35 mL of injected fluid,whereas in adhesive capsulitis, the joint accepts only 5 to 10 mL.
Patients typically present with pain of insidious onset of several months duration. The onset of symptoms tends to be more gradual than in other shoulder conditions. Pain is commonly referred to the origin of the deltoid. Night pain is common, and patients typically cannot sleep on the affected side.