[夏肇毅部落格  夏肇毅運算網 Mark Hsia Computing Web]

肩膀三軸運動方向與範圍:

屈曲 Flexion: 右手臂伸直下垂,向前,向上. 0-180度.

伸展 Extension: 右手臂伸直下垂,向後. 0-45度.

外旋 External Rotation: 右大臂向右,屈肘,小臂向前,向上. 0-90度.

內旋 Internal Rotation: 右大臂向右,屈肘,小臂向前,向下. 0-90度.

內收 Adduction: 右手臂伸直下垂,向左下. 0-45度.

外展 Abduction: 右手臂伸直下垂,向右,向上. 0-170度.

旋轉肌群

Rotator cuff

Muscles composing rotator cuff

Muscle	Origin on scapula	Attachment on humerus	Function	Innervation
Supraspinatus muscle	supraspinous fossa	superior and middle facet of the greater tuberosity	abducts the arm	Suprascapular nerve (C5)
Infraspinatus muscle	infraspinous fossa	posterior facet of the greater tuberosity	externally rotates the arm	Suprascapular nerve (C5-C6)
Teres minor muscle	middle half of lateral border	inferior facet of the greater tuberosity	externally rotates the arm	Axillary nerve (C5)
Subscapularis muscle	subscapular fossa	lesser tuberosity (60%) or humeral neck (40%)	internally rotates the humerus	Upper and Lower subscapular nerve (C5-C6)

肌肉

Supraspinatus muscle 棘上肌

Supraspinatus muscle

Infraspinatus muscle 棘下肌

Infraspinatus muscle

Teres major muscle 大圓肌

Teres major muscle

Teres minor muscle 小圓肌

Teres minor muscle

Subscapularis muscle 肩胛下肌

Subscapularis muscle

骨骼

Scapula 肩胛骨

Scapula

Infraspinatus fossa 棘下窩

Infraspinatous fossa

Supraspinatus fossa棘上窩

Supraspinatous fossa