elbow Flashcards
what is the capsular pattern of the elbow?
flexion>extension
What joints is the elbow articulation made up of?
ulnohumeral joint and the radiohumeral joint
what is the close packed position of the elbow?
extension and forearm supination
what does the interosseous membrane prevent?
proximal displacement of the radius on the ulna
what movements does the oblique cord prevent?
prevents pulling movements of the radius on ulna
what is the normal carrying angle in males?
5-10 degrees
what is the normal carrying angle in females?
10-15 degrees
what is a gun stuck deformity?
15 degrees of medial deviation-cubitus varus
how much elbow flexion is there at the elbow?
140-150 degrees
how much supination is there at the elbow?
90 degrees
what is the capsule pattern of the elbow?
flexion>extension
what movement is weak with a median nerve injury?
pronation
what movement is weak with a ulnar nerve injury?
wrist flexion
what movement is weak with a radial nerve injury?
loss of supination
what is a positive for the pinch grip test?
pulp to pulp pinch of the index finger and thumb
where can the median nerve be compressed?
ligament of struthers
between two heads of pronation teres
under the flexor retinaculum
where is the ulnar nerve compressed?
cubital tunnel
between two heads of the flexor Capri ulnaris
guyons canal
when are symptoms of an ulnar nerve injury most likely to occur?
when the elbow is flexed
where can the radial nerve be compressed or injured?
fracture of the shaft of the humerus in radial groove
bwt the two heads of supination in the arcade of frohse
