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13 Cards in this Set
- Front
- Back
scapular spine divides scapula into what two parts
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supraspinous fossa and infraspinous fossa
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What creates the supraspinatous tunnel
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corocoid process and acromion
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What does the coracoacromial arch consist of
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Acromion, corocoid process and coracoacromial ligament
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What two ligaments make up the coracoclavicular ligaments
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trapezoid and conoid ligaments
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4 rotator cuff muscles and movement associated with them
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subscapularis (IR)
supraspinatous (abd of glenoidhumeral joint to 15) infraspinatus (ER) Teres minor (helps with abduction, ER) |
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Origin, insertion, innervation and action of supraspinatus
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Origin: Suprasinatous foss
Insertion: Greater tubercle Innervation: Suprascapular nerve (C4-6) Action: Abduction |
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Origin, insertion, innervation and action of infraspinatus
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Origin: infraspinatous fossa
Insertion: Greater tubercle Innervation: Suprascapular nerve (C5,6) Action: ER |
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What rotator cuff muscle is more susceptible to tearing?
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supraspinatus muscle
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Origin, insertion, innervation and action of teres major
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**Not a rotator cuff muscle**
Origin: Lateral border of scapula Insertion: Crest of the lesser tubercle Innervation: Lower subscapular nerve (C5-C7) Action: IR, adduction |
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Origin, insertion, innervation and action of teres minor
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Origin: Lateral border of scapula (above t.major)
Insertion: Greater tubercle Innervation: axillary (C5,C6) Action: ER |
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Origin, insertion, innervation and action of subscapularis
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Origin: subscapular fossa (anterior)
Insertion: Lesser tubercle Innervation: Upper and lower subscapular nerve (C5-C7) Action: IR, Adduction |
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What are the 3 muscles that insert at the greater tubercle
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Teres minor, infraspinatus, supraspinatus
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If pt. cant abduct to 15 degrees what rotator cuff muscle has been affected
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supraspinatus muscle
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