Term
| muscles of shoulder complex |
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Definition
stability during motion
-ligaments that restrict movement
-simultaneous movement & stabilization by muscles
significant contribution to skilled UP movement
- writing
-lifting, pushing, pulling, throwing |
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Term
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Definition
-function= movement & stabilization of scapula during GH movement
- proximal insertions are on the thorax
- distal insertions are on the scapula |
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Term
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Definition
-primary scapular protractor
-scapular protraction and upward rotation |
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Term
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Definition
upper trapezius
-elevation and upward rotation of scapula
-extension, lateral flexion, & contralateral rotation of neck
middle trapezius
- upward rotation and adduction of scapula
lower trapezius
- upward rotation, adduction, and depression of scapula |
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Term
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Definition
-lie deep to the trapezius
- rhomboid minor is more cranial; major is more caudal
- elevation and retraction of scapula
- rhomboid major provides downward rotation |
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Term
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Definition
-located anteriorly on upper chest; deep to pectorals major
-depression and anterior tilt of scapula |
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Term
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Definition
- deep to upper trapezius & sternocleidomastoid muscles
- elevation and downward rotation of scapula |
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Term
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Definition
rotator cuff muscles
-provides stabilization & movement
- acronym- SITS
-supraspinatus
-infraspinatus
- teres minor
- subscapularis
- biceps and triceps included as they offer some stabilization |
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Term
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Definition
-deep to trapezius and deltoid
- abduction of GH |
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Term
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Definition
| -lateral rotation and adduction of GH |
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Term
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Definition
| lateral rotation and adduction of GH |
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Term
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Definition
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Term
| large muscle movers of shoulder |
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Definition
-little or no attachment to scapula
- "primary movers" of GH |
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Term
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Definition
-large, superficial muscle
- 3 parts: anterior, middle, and posterior
- all 3 parts produce shoulder abduction
- anterior and posterior act as antagonists
- anterior produces horizontal adduction
- posterior produces horizontal abduction |
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Term
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Definition
-abduction of GH
-anterior deltoid performs flexion and horizontal adduction
-posterior deltoid performs extension and horizontal abduction |
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Term
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Definition
| medial rotation, adduction, and extension of GH |
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Term
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Definition
-horizontal adduction & medial rotation of GH
- clavicular head performs flexion of GH
- sternocostal head performs extension of GH when in full flexion |
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Term
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Definition
| adduction and flexion of GH |
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Term
| synergistic muscle actions |
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Definition
force couple
-2 forces on opposite sides of an axis
-movement vectors in opposite directions
-produces rotation at axis |
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Term
| muscle activity during functional movement |
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Definition
examples from text
- placing hand behind head
-pulling
complex movement of synergists
changes in concentric and eccentric |
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