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38 Cards in this Set
- Front
- Back
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What is the collagen tissue surrounding the periphery of the glenoid fossa?
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labrum. it adds stability by deepening cavity
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what 4 muscles make up the rotator cuff?
which of these is the only internal rotator? together they are in charge of GH joint external/internal rotation |
SITS
supraspinatus infraspinatus teres minor subscapularis*** |
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what are the 2 functions that the muscles attaching to the scapula perform?
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stabilize shoulder (by developing tension)
facilitate mov't of upper extremity (contra t/relax to permit proper mov't) |
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what are bursaes?
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fibrous sacs of synovial fluid that cushion and reduce friction btw layers of collagenous tissues
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what's the scapulohumeral mov't?
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1st 30* of humeral elevation the scapula contriution is about 1/5 of total mov't
after 30* the scapula rotates about 1* for ever 2* of humeral mov't |
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what are the six muscles of the scapula?
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-levator scapula
-rhomboids -serratus anterior -pectoralis minor -subclavius -trapezius (4 parts) |
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what are the muscles of protraction (away from spine)?
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serratus anterior
pectoralis minor |
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what are the muscles of depression(down)?
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pectoralis minor
trapezius |
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what are the muscles of retraction (toward spine)?
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rhomboids (angle up twd spine)
trapezius (multiple heads) levator scapula subclavius |
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what is passive mov't of shoulder?
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I move shoulder
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what is active mov't of shoulder
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he tries to move shoulder by himself. HARDER
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where is the levator scapula
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top of the shoulder connecting acromion to neck so logically they elevate, retract, rotate
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where is the serratus anterior ?
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ribs drawing to back so they logically protract, rotate
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where are the rhomboids
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connect to scapula with an upward angle so logically they retract, elevate , rotate
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what are the primary shoulder extensors/adductors?
plt |
primary: pectoralis major (sternal when flexed), latissimus dorsi, teres major
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what are the shoulder flexors?
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pectoralis major (clavicle), deltoid anterior
assist: biceps brachii, coracobracilis |
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GH joint abductors
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1st 110* is supraspinatus
90-180 middle deltoid |
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which muscles assists when arm is elevated above 90* with adduction?
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coracobracilis and subscapularis
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3 primaries for horizontal GH joint adduction?
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pectoralis major
anterior deltoid coracobrachialis |
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3 primaries for horizontal abduction?
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middle/posterior deltoid, infraspinatus, teres minor
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what muscle assists in elbow extension?
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aconeus
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what is the primary and assisting muscle in the pronation of the elbow?
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pronator quadratus
pronator teres |
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two muscles for supination of the elbow? think about where supination mostly is to get the primary
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supinator until 90*
less than 90* the biceps brachii kicks in |
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what happens in the bone when the hand is pronated?
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the radius crosses over the ulna
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does the elbow undergo more compressive force with extension or flexion?
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extension because moment arm is less
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what are the two overuse injuries for the elbow?
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lateral epicondylitis from tennis elbow
medial epicondylitis from pitching aka little leaguers elbow |
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what injury happens from grabbing to hard on the wrists?
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nursemaid elbow. the radial head slips from annular ligament which allows pivoting
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some lovers try positions that they can't handle
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scaphoid lunate triquetral pisiform trapezium trapezoid capitate hammate
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which risk flexor is not always present? how do you test for it?
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palmaris longus
flex the wrist it'll pop out medially |
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name at least 2 of the muscles that extend the wrist when fingers are flexed
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extensor pollicis longus
extensor indicis extensor digiti minimi extensor digitorum |
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where are and what kind of joints are seen at the carpometacarpals (CM)
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thumb: saddle
all others: gliding |
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what are DIPs and PIPs
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distal interphalangeal joints (farthest)
proximal interphalangeal joints |
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what do the interphalangeal joints do?
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help with the interaction btw metacarpals
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what does the extensor pollicus longus do vs. extensor pollicus brevis?
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extension at MP and Ip joints of thumb, adduction at MP joint of thumb
brevis: doesn't adduct |
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what does the flexion of pollicis longus do?
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same at ext. pollicus brevis but flexion--flex at ip and mp joint of thumb
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which extrinsic muscle does abduction?
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abductor pollicus longus
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what is pollicus? indicis? digiti minimi? digitorum ?
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thumb. index. pinky. digits 2-5
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4 common injuries
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sprains
fractures dislocations carpal tunnel |
