Boney Landmarks
Which bone does not articulate with carpals?
Ulna
What is the common innervation among the superficial layer of the posterior forearm muscles?
Radial Nerve
What is the common innervation among the Deep layer of the posterior forearm muscles?
radial nerve
Name the three bones that make up the elbow joint:
humerus, radius, and ulna
When doing this hitting a tennis ball with a racket you are using what muscle the most?
extensor carpi radialis brevis
The ____ rotates around the ___ to perform pronation and supination?
radius rotates around the ulna
What is the insertion of brachioradialis (BR)?
Lateral distal end of the radius proximal to the styloid
Which muscle is responsible for extension of all the joints of the thumb?
Extensor Pollicis Longus
What kind of joints are the superior and inferior radioulnar joints?
pivot synovial joints
What is the tea drinking muscle?
extensor digiti minimi (EDM)
Where is the lister’s tubercle located?
distal end of the radius
What muscle forms 4 tendons in the distal forearm?
Extensor digitorum Communis
This muscle is responsible for thumb abduction.
Abductor Pollicis Longus
What type of joint is the radiocarpal joint?
condyloid synovial
Name one of the three muscles that are used to give thumbs up:
Abductor pollicis longus, extensor pollicis longus and extensor pollicis brevis
How many articular facets does the distal end of the radius have?
two
Which muscle does not have tendons that extend into the hand?
brachioradialis
What are the contents of the carpal tunnel?
nine tendons and one nerve (median nerve)
What ligament holds the head of the radius in contact with the radial notch of the ulna?
annular ligament
What extensor muscle is used to type on a keyboard?
Extensor digitorum communis
(EDC)
What does the head of the radius articulate with?
capitulum of the distal end of the humerus
Name the one of the posterior forearm muscles that abducts and extends the wrist?
extensor carpi radialis longus (ECRL) and extensor carpi radialis brevis (ECRB)
What muscle does not go under the extensor retinaculum?
Supinator
The head of the radius articulates with the radial notch of the ulna to form what joint?
Proximal Radioulnar Joint
What boney landmark do OTs use to adjust the height of a cane for a client?
ulnar styloid process