Shoulder
Shoulder(shoulder joint, 어깨 관절)는 ball-and-socket joint로 운동반경이 넓지만 상대적으로 unstable한 관절이다.
목차
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 intraosseous synovial cyst)
- scapula
- Glenoid
- supraglenoid tubercle: LHBT
- infraglenoid tubercle: triceps long head
- varients: cartilage bare spot, Tubercle of Assaki
- glenoid rim: trinangular shape
- glenoid dysplasia: posteroinferior rim(delta or J shape)
- Acromion
- 4 types
- lateral or anterior downsloping acromion, low-lying acromion
- Os acromiale
- coracoid process
- Glenoid
Rotator cuff
- 따로 기술함.
Biceps tendon long head(LHBT) and Rotator interval
- Biceps labral complex(bicipitolabral complex): 3 types
- Predominant posterior insertion is prone to superior labral tears with posterior extension of the tear in the throwing athlete.
- Biceps pulley: SGHL + CHL medial band
- Rotator interval: a triangular space between the tendons of subscapularis and supraspinatus and the base of the coracoid process
Ligaments
- superior glenohumeral ligament
- middle glenohumeral ligament
- inferior glenohumeral ligament: anterior band and posterior band.
- coracohumeral ligament
- coracoacromial ligament
- Rotator cable(RC): articular side of SST and IST, connected to CHL.
Joint capsule and recess
- anterior joint capsule attachment: 3 types
- 3 Recesses
- subscapular recess: saddlebag fluid collection.
- axillary recess
- intertubercular recess
Bursa
- Subacriomial-subdeltoid bursa
- Subcoracoid bursa
Neurovascular bundles
- Suprascapular nerve: suprascapular notch, spinoglnoid notch
- Axillary nerve: quadrilateral space
- innervation: teres minor and deltoid