Wk 4 Clinical Correlations, Upper Extremity Flashcards
Dislocate
completely out of anatomical alignment
Reduce
go back into anatomical alignment
Subluxate
partially out of anatomical alignment
Supraspinatous action
elevation of arm
Subscapularis action
internal rotation
Teres minor action
external rotation
Infraspinatous action
external rotation
Most common cause of rotator cuff pathologies
age-related degenerative processes
Sternoclavicular dislocation
high energy, blood vessels directly under clavicle
Acromioclavicular dislocation
usually no surgery
Scapulothoracic dislocation
very high energy, neurologic/vascular injuries common
Glenohumoral dislocation
“shoulder disolocation”
ant most common
post in intoxication, electrocutions, seizures
Most common ligament torn in shoulder separations
coracoclavicular ligament (different than shoulder dislocation)
Nursemaid’s elbow
radial head dislocated from annular ligament
Fracture dislocation of elbow
requires surgery, high energy impact, may result in chronic pain, stiffness, and instability
Force distribution in arm
radius absorbs from wrist
ulna transfers to humerus
interosseous membrane important in moving force from radius to ulna
Pathology of carpal tunnel syndrome
swelling of flexor tendon synovium
Ulnar n. injuries
sensation loss and fine motor control of hand
Superficial radial n. injury
sensation changes, no loss of strength
Posterior interosseous nerve injury
lack of thumb/finger extension
Radial n. injury
extensor carpi radialis brevis and longus are innervated above the elbow–>loss of wrist extension
