Joints of Upper Extremity Flashcards
cartilagenous joints?
synchondroses
symphyses
what type is the ac joint?
shoulder joint?
elbow joint?
plane
ball and socket
hinge
what type is the radioulnar joint?
sternum and clavicle?
pivot
double saddle
what is in the pectoral girdle?
clavicle
scapula
AC and SC joints
what ligaments are in the sc joint?
ant. and post. SC l.
interclavicular l.
costoclavicular l.
4 total
what happens in a SC joint dislocation?
fractures in epiphyseal plate at the sternal end usually in people older than 25 y/o
what is ankylosis of the SC joint?
stiffening, fixation, or fusion of the SC joint
arthritic condition
what ligaments does the AC joint have?
sup. AC l.
inf. AC l.
conoid l.
trapezoid l.
4 total
how does dislocation of AC joint occur?
when AC l. is sprained or comes apart like in a fall
clinical manifestations of dislocated AC joint?
separated shoulder (grade 1-3)
piano key sign
what pierces the capsule of the glenohumeral joint?
long tendon of biceps brachi @ supraglenoid tubercle
what are the glenohumeral ligaments of the joint?
glenohumeral (sup, mid, inf)
coracohumeral
transverse
coracoacromial
6 total
what are bursa of the glenohumeral joint?
subscapular
subacromial
subcoracoid
subdeltoid
how do dislocations of the glenohumeral joint occur?
ant. and inf.
hyperextension w/lateral rotation
what may tear in a dislocation of glenohumeral joint?
what can be damaged?
fibrous layer of joint capsule and glenoid labrum
axillary n. and post. circumflex humeral a.
what causes adhesive capsulitis, who does it affect?
what is it also called?
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
what causes rotator cuff injuries?
repetitive overhead motion above 90 degrees
pushing off with arms
falling on outstretched arm/hand
what is the “true” elbow joint?
what else is included
humeroulnar
humeroradial and prox radioulnar
what makes up the prox radioulnar joint?
annular l
quadrate l
what makes up the distal radioulnar joint?
palmar radioulnar l.
dorsal radioulnar l.
interosseous membrane
what is “nursemaid’s” elbow?
subluxation and dislocation of radial head
distal attachment of annular l. becomes torn, radial head dislocates
what is lateral epicondylitis?
tennis elbow or repetitive motion injury
extensor carpi radialis brevis tendon affected
what are examples of fibrous joints
sutures
syndesmoses
gomphoses
