Unit 3 Review Flashcards
What are the muscles within the snuff box
extensor pollicis longus, extensor pollicis brevis, abductor pollicis brevis
The ____ is the true wrist joint. The ____ is the true elbow joint
radiocarpal, humeroulnar
What are the joints in the elbow
Humeroulnar, radiohumeral, radioulnar
Collateral ligaments provide stability from ____ (lateral) forces and ____ (medial) forces
valgus, varus
What are the ligaments of the elbow
radial collateral ligament, ulnar collateral ligament, annular ligament, capsular ligament
what are the 5 main flexor muscles that run to the wrists and digits
flexor digitorum superficialis, flexor digitorum profundus, palmaris longus, flexor carpi ulnaris, flexor carpi radialis
What joints do the flexor digitorum superficialis flex
Metacarpophalengeal (MCP) and proximal interphalangeal (PIP)
What two factors could contribute to hyperextension of the elbow
a small olecranon process or a large olecranon fossa- both allow for more extension before contact occurs
What is the purpose for the annular ligament in the elbow
The annular ligament stabilizes the radial head as it rotates during pronation and supination
What structure transmits forces received distally from the radius to the ulna and increases the area for muscular attachment in the forearm
interosseous membrane
true or false, the medial epicondyle is a site of injury to chronic tendinosis of the wrist flexors and pronators
true
Which carpal is important in both motion and stability of the wrist joint
scaphoid
what is carpal tunnel syndrome caused by
compression of the median nerve
what is the muscle that helps in pronation at the distal end of the forearm
pronator quadratus
what motion(s) is/are possible at the radioulnar joint? What muscles help with the movement(s)?
pronation- pronator teres, pronator quadratus
supination- supinator and anconeus
what is the difference between golfers elbow and tennis elbow
Golfers elbow is overuse of flexors where tennis elbow is overuse of extensors, golfer’s elbow occurs on medial side of elbow whereas tennis elbow stresses the lateral side
How are each of the wrist and elbow injuries treated
a. tennis elbow rest/RICE
b. golfers elbow rest/RICE
c. carpal tunnel syndrome splint then surgery but can come back
d. Tommy John (UCL tear) Tommy John surgery and 18 months recovery
e. can pull to fix/re-set finger but more likely to dislocate again after once. Thumb doesn’t go back in as easily
what is the structure that runs up and down the length of the radius and ulna in the arm
interosseous membrane
which muscle would you be using to make a fist with your hand
flexor digitorum superficialis and flexor digitorum profundus
what causes the scaphoid bone to take longer to heal than others
poor blood supply
are the MCP joints more proximal or distal to the IP joints
proximal
true or false, the thenar is the fat pad that sits on the lateral side of the hand and the hypothenar is the fat pad that sits on the medial aspect of the hand
false
which of these carpals is not one that is commonly fractured
lunate
which action are u performing when you wave your hand / wrist side to side
radial and ulnar deviation
