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26 Cards in this Set
- Front
- Back
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Describe the arthrokinematics at the SC joint during elevation.
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The medial end of the clavicle rolls superiorly and glides inferiorly.
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Describe the are arthrokinematics at the SC joint during retraction.
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The medial end of the clavicle rolls and slides posteriorly.
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What structure becomes taut during elevation of the clavicle?
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Costoclavicular ligament (CCL)
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What structure becomes slack during elevation of the clavicle?
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Superior capsule and interclavicular ligament
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What structures becomes taut during retraction of the clavicle?
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CCL and Anterior capsular ligament
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True or False: Upward and downward rotation at the AC joint occur in the sagittal plane.
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False, it ocurrs in the frontal plane around a sagittal axis
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What motion occurs at the SC and AC joint that creates Scapulothoracic elevation?
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SC- elevation, AC- downward rotation
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What motion occurs at the SC and AC joint that creates Scapulothoracic protraction?
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SC-protraction, AC- Lateral horizontal plane adjustments
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What motion occurs at the SC and AC joint that creates Scapulothoracic downward rotation?
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SC-depression, AC-downward rotation
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True or False: Rotation at the SC joint occurs in the sagittal plane.
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True
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What 2 ligaments comprise the Coracoclavicular ligament?
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Conoid and trapezoid ligaments
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True or False: the clavicle rotates posteriorly during scapular upward rotation?
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True
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True or False: the AC joint is classified as a plane joint.
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True
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True or False: the SC joint is classified as a plane joint.
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False, it is classified as a saddle joint
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What motions make up shoulder horizontal abduction? |
• Horizontal abduction of the humerus • Retraction of the scapula • Retraction of the clavicle |
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What motions make up shoulder extension? |
•Extension of the humerus •Downward rotation and retraction of the scapula •Depression and retraction of the clavicle |
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What is the closed packed position for the Glenohumeral joint?
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There are two: Abduction concurrent with ER and Flexion concurrent with IR
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True or False: the anterior band of the Coracohumeral becomes taut with shoulder flexion.
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False, it becomes taut with shoulder extension.
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During what motions does the inferior Glenohumeral ligament become taut?
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All fibers: Abduction, Anterior band: ER, posterior band: IR
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During what motion does the Conoid ligament become taut? |
Retraction of the clavicle |
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What are the arthrokinematics at the Glenohumeral joint during shoulder IR in an open kinematic chain?
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The humeral head rolls anteriorly and slides posteriorly
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What is/are the arthrokinematics at the glenohumeral joint during shoulder flexion in an open kinematic chain?
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Spin
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What are the arthrokinematics at the Glenohumeral joint during shoulder ABD in an open kinematic chain?
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The humeral head rolls superiorly (laterally) and slides posteriorly (medially)
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What is the loosed packed position of the Glenohumeral joint?
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55 degrees of ABD and 30 degrees of horizontal ADD
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During what motions does the anterior middle and inferior GH ligaments become taut? |
ER and Abduction |
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What motions does the clavicular portion of the Pect Major produce? |
• Internal rotation of the shoulder
• Flexion of the shoulder • Horizontal adduction of the shoulder |
