Shoulder |
| Term | Also Known As | Description |
| AC joint sprain | | An AC joint sprain results when tissue that connects the upper point of the shoulder blade with the collar bone is overstretched or torn. |
| biceps tendonitis | inflammation of the long head of the biceps | Biceps tendonitis happens when the long tendon attached to the shoulder end of the biceps muscle swells. |
| dislocated shoulder | | A dislocated shoulder occurs when the top of the arm bone is disconnected from the shoulder blade. |
| fracture of the clavicle | | A fracture of the clavicle is a partial or complete crack or break in the "collar" bone that connects the shoulder blade and the breastbone. |
| glenohumeral instability or subluxation | | Glenohumeral instability or subluxation is partial dislocation or misalignment of the shoulder bones. |
| glenoid labrum injury | | A glenoid labrum injury is damage to the cartilage that lines the area of the shoulder where the top of the arm bone is. |
| inflammation of muscle attachments to the clavicle | | Inflammation of muscle attachments to the clavicle is swelling of muscles where they connect to the bone between the neck and shoulder. |
| impingement syndrome | | Impingement syndrome results from abnormal pressure or entrapment between the top of the upper arm bone and soft tissue in the shoulder. |
| inflammation of the supraspinatus tendon | | Inflammation of the supraspinatus tendon occurs when there is swelling of the tendon attaching the supraspinatus muscle to the shoulder joint. |
| inflammation of the subscapularis tendon | | Inflammation of the subscapularis tendon happens when there is swelling of the tendon attaching the subscapularis muscle of the rotator cuff to the shoulder joint. |
| pectoralis major muscle strain | | Pectoralis major muscle strain occurs when the upper chest muscle is overstretched or torn. |
| pectoralis major tendon strain | | Pectoralis major tendon strain develops when the cord-like tissue that connects the upper chest muscle with the upper arm bone is overstretched or torn. |
| pectoralis major tendon inflammation | | Pectoralis major tendon inflammation happens when the cord-like tissue that connects the upper chest muscle with the upper arm bone swells. |
| referred shoulder pain | | Referred shoulder pain occurs when a sensation of physical distress or injury is noticed in the joint between the neck and the arm, which is not where the original sensation began. |
| rotator cuff strain | | A rotator cuff strain develops when one or more of the muscles or tendons in the shoulder overstretch or tear. |
| rupture of the supraspinatus tendon | | Rupture of the supraspinatus tendon happens when there is a tear or break of the cord-like tissue attaching the supraspinatus muscle to the shoulder joint. |
| rupture of the long head of the biceps | | Rupture of the long head of the biceps happens when there is a tear or break in the long tendon attached to the shoulder end of the biceps muscle. |
| subacromial bursitis | | Subacromial bursitis is irritation and inflammation of the fluid-filled cushioning sac under the shoulder's acromium bone. |
Less Common Shoulder Pain and Injuries |
| Term | Also Known As | Description |
| deltoid muscle strain (front) | | A front deltoid muscle strain occurs when the chest side of the biggest shoulder muscle is overstretched or torn. |
| deltoid muscle strain (back) | | A back deltoid muscle strain occurs when the back side of the biggest shoulder muscle is overstretched or torn. |
| dislocation of the sterno-clavicular joint | | Dislocation of the sternoclavicular joint happens when there is misalignment or displacement between the collarbone and the breastbone. |
| fracture of the neck of the humerus | | A fracture of the neck of the humerus is a partial or complete crack or break in either end of the upper arm bone. |
| adhesive capsulitis | frozen shoulder | Adhesive capsulitis is chronic restriction or inability of the shoulder to move around as it should be able to because of inflammation or scarring. |
| winged scapula | | A winged scapula happens when a certain rib cage muscle loses its ability to connect the shoulder blade to the rib cage. |