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COM - MSK > Joints of Upper Extremity > Flashcards

Joints of Upper Extremity Flashcards

1
Q

cartilagenous joints?

A

synchondroses

symphyses

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2
Q

what type is the ac joint?

shoulder joint?

elbow joint?

A

plane

ball and socket

hinge

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3
Q

what type is the radioulnar joint?

sternum and clavicle?

A

pivot

double saddle

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4
Q

what is in the pectoral girdle?

A

clavicle
scapula
AC and SC joints

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5
Q

what ligaments are in the sc joint?

A

ant. and post. SC l.
interclavicular l.
costoclavicular l.

4 total

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6
Q

what happens in a SC joint dislocation?

A

fractures in epiphyseal plate at the sternal end usually in people older than 25 y/o

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7
Q

what is ankylosis of the SC joint?

A

stiffening, fixation, or fusion of the SC joint

arthritic condition

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8
Q

what ligaments does the AC joint have?

A

sup. AC l.
inf. AC l.
conoid l.
trapezoid l.

4 total

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9
Q

how does dislocation of AC joint occur?

A

when AC l. is sprained or comes apart like in a fall

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10
Q

clinical manifestations of dislocated AC joint?

A

separated shoulder (grade 1-3)

piano key sign

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11
Q

what pierces the capsule of the glenohumeral joint?

A

long tendon of biceps brachi @ supraglenoid tubercle

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12
Q

what are the glenohumeral ligaments of the joint?

A

glenohumeral (sup, mid, inf)

coracohumeral

transverse

coracoacromial

6 total

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13
Q

what are bursa of the glenohumeral joint?

A

subscapular
subacromial
subcoracoid
subdeltoid

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14
Q

how do dislocations of the glenohumeral joint occur?

A

ant. and inf.

hyperextension w/lateral rotation

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15
Q

what may tear in a dislocation of glenohumeral joint?

what can be damaged?

A

fibrous layer of joint capsule and glenoid labrum

axillary n. and post. circumflex humeral a.

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16
Q

what causes adhesive capsulitis, who does it affect?

what is it also called?

A

chronic inflammation in the glenohumeral joint can lead to fibrosis, glenohumeral dislocations, supraspinatus tendinitis, biceps tendinitis or rotator cuff tears
40-60 year olds

frozen shoulder

17
Q

what causes rotator cuff injuries?

A

repetitive overhead motion above 90 degrees
pushing off with arms
falling on outstretched arm/hand

18
Q

what is the “true” elbow joint?

what else is included

A

humeroulnar

humeroradial and prox radioulnar

19
Q

what makes up the prox radioulnar joint?

A

annular l

quadrate l

20
Q

what makes up the distal radioulnar joint?

A

palmar radioulnar l.
dorsal radioulnar l.
interosseous membrane

21
Q

what is “nursemaid’s” elbow?

A

subluxation and dislocation of radial head

distal attachment of annular l. becomes torn, radial head dislocates

22
Q

what is lateral epicondylitis?

A

tennis elbow or repetitive motion injury

extensor carpi radialis brevis tendon affected

23
Q

what are examples of fibrous joints

A

sutures
syndesmoses
gomphoses

COM - MSK (12 decks)

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