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34 Cards in this Set
- Front
- Back
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SC joint motions?
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1. elevation/depression
(a/p axis, frontal plane) 2. protraction/retraction 3. anterior/posterior rotation |
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what ligament limits the SC joint during elevation?
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costoclavicular ligament
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arthrokinematics at the SC joint during depression?
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inferior roll and superior slide
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what ligament limits the SC joint during depression
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interclavicular ligament
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arthrokinematics at the SC joint during protraction?
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clavicle rolls and slides anteriorly
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SC protraction limited by?
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costoclavicular ligament
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SC retraction limited by?
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costoclavicular ligament
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arthrokinematics of SC during anterior/posterior rotation?
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clavicle spins around its own long axis= close to pure spin
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AC joint motions?
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1. upward/downward rotation
2. internal/external rotation 3. anterior/posterior tipping |
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What is the primary motion of the scapula?
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upward/downward rotation
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upward/doward rotation of the scapula by the AC joint is limited by?
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coracoclavicular ligament
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AC joint internal/external rotation occurs with?
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clavicle protraction/retraction
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AC joint anterior/posterior tipping follows? and is limited by?
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1. follows thorax curvature
2. passive restrictions of thorax shape |
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ST joint tied to
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1. motion of scapula
2. AC joint |
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GH joint structure?
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ball and socket = most mobile joint in body
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Can the weight of the arm with no muscle activity be supported only by the passive ligaments?
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yes
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GH joint motions?
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1. abduction/adduction
2. flexion/extension 3. internal/external rotation |
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GH joint abduction arthrokinematics?
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humerus rolls superiorly and slides inferiorly on glenoid fossa
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GH joint adduction arthrokinematics?
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humerus rolls inferiorly and slides superiorly
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GH flexion/extension arthrokinematics?
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humeral head spins on the glenoid fossa
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GH joint arthrokinematics during internal rotation?
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Anterior roll
Posterior slide |
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GH joint arthrokinematics during external rotation?
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Posterior roll
Anterior slide |
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GH close packed position?
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full abduction and external rotation
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GH loose packed position?
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~ 45 degrees abduction
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Elevation includes and requires?
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1. flexion and abduction
2. motion at all 4 joints of shoulder |
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GH joint allows how much flexion and abduction?
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100-120 flexion
90-120 abduction total rom = 180 |
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ST joint contribution to elevation ROM
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upward rotation of the scapula = 60 degrees of elevation
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during elevation the scapula also undergoes?
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posterior tipping and external rotation
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upward rotation of scapulothoracic joint is associated with?
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1. sternoclavicular elevation and retraction
2. acromioclavicular upward rotation |
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what muscles drive elevation? and is dependent on what motion
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1. deltoid and supraspinatus
2. motion of scapula and clavicle |
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Scapula rotation is controlled by what muscles?
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trapezius and serratus anterior
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During extension and adduction what muscles affect shoulder mobilization?
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Exert torque around GH joint:
1. Latissimus dorsi 2. infraspinatus 3. teres major hold scapula in place= rhomboids |
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During internal rotation what muscles affect shoulder mobilization?
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primary mover:
1. pectoralis major assisted by: teres major, latissimus dorsi, subscapularis |
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most shoulder injuries using wheelchairs occur?
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superior or anterior sections of the GH joint
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