Shoulder

Shoulder(shoulder joint, 어깨 관절)는 ball-and-socket joint로 운동반경이 넓지만 상대적으로 unstable한 관절이다.

구성

• glenohumeral joint
• acromioclavicular joint
• sternoclavicular joint
• scapulothoracic joint

Bones

• humerus
  • anatomical neck vs surgical neck
  • greater tuberosity and lesser tuberosity
  • humerus head: posterior cyst(nonpathologic cyst intraosseous synovial cyst)
• scapula
  • Glenoid
    • supraglenoid tubercle: LHBT
    • infraglenoid tubercle: triceps long head
    • varients: cartilage bare spot, Tubercle of Assaki