Term
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Definition
| This is a coordinated movement that occurs between the Head of the Humerus and the scapula that contributes to a more stabilized shoulder joint, allowing the arm to reach 180 degrees of elevation. Allows the shoulder to move through its full ROM and allows for the Head of the Humerus to be centered in the Glenoid Fossa. |
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Term
| For every 15 degrees Shoulder Abduction: 10 degrees occurs at the GH Joint, and 5 degrees occurs at the Scapulo-thoracic Joint. |
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Definition
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Term
| For 180 degrees of Shoulder Abduction, 120 degrees occurs at the GH Joint, and 60 degrees occurs at the scapulo-thoracic joint. |
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Definition
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Term
| Changes to Scapulo-Humeral Rhythm cause the head of the humerous to be off centered; leading to problems such as: RC Tendonitis or RC Impingement. |
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Definition
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Term
Muscles that Originate on Scapula and insert on the humerus: RC Group.
Small movements of the arms/stabliizers |
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Definition
| Supraspinatus, Infraspinatus, Teres Minor, Teres Major, Subscapularis. SITTS |
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Term
| Muscles that Originate on Torso and insert on Scapula- producing movements of the scapula |
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Definition
| Rhomboids. Upper and lower traps |
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Term
| Muscles that Originate on the Torso and then to the Humerus, providing great strength and ROM of the Arms. |
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Definition
| Pectoralis Major, Deltoid, Latissimus Dorsi, and Serratus Anterior |
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Term
Level 1:
During the first 30 degrees of Abduction, the humerus moves alone, pulled by the supraspinatus and the deltoid |
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Definition
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Term
Level 2: At this point the scapula becomes fully integrated in the movement, producing elevation of the acromial end of the clavicle.
a. for every 1 degree of scapular rotation, there are 2 degrees of humeral elevation |
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Definition
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Term
Level 3: At approximately 120 degrees of shoulder abduction, the clavicle elevates, contributing tot he final 60 degrees of Range of Motion.
a. The clavicle can elevate 30 degrees corresponding to the degree of scapular rotation. |
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Definition
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