Elbow and Forearm Complex Flashcards
The carrying angle of the elbow is the slight (varus/valgus) orientation between the articulating surfaces of the humeroulnar joint
valgus
What is the male carrying angle?
5-15 degrees
What is the female carrying angle?
10-15 degrees
What does the carrying angle do?
It helps direct the ulna laterally during elbow EXT and allows it to flex efficiently
Describe FLX at the humeroulnar and humeroradial joints.
Ulna and radius anteriorly roll and glide
Describe EXT at the humeroulnar and humeroradial joints.
Ulna and radius posteriorly roll and glide
What is the open packed position of the humeroulnar joint?
70 degrees FLX
10 degrees SUP
What is the close packed position of the humeroulnar joint?
Full EXT and SUP
(flexion/extension) is more restricted in the humeroulnar joint.
Flexion
What is the open packed position of the humeroradial joint?
Full elbow EXT and SUP
What is the close packed position of the humeroradial joint?
90 degrees FLX
5 degrees SUP
Is the radius or ulna shorter?
radius
What is the open packed position of the proximal radioulnar joint?
70 degrees elbow FLX
35 degrees SUP
What is the close packed position of the proximal radioulnar joint?
5 degrees SUP
Describe the capsular pattern of the proximal radioulnar joint.
Minimal motion loss and pain at end-ranges of PRON/SUP
Describe proximal radioulnar joint SUP.
radial head rolls posterolaterally and glides anteromedially on the radial notch of the ulna
Describe proximal radioulnar joint PRON.
radial head rolls anteromedially and glides posteromedially on the radial notch of the ulna
What is the range of elbow FLX/EXT?
0-150 degrees
What is the range of forearm PRON/SUP?
0-90 degrees
When performing quadrant testing, always scour in the direction of the patient’s ___ digit.
5th digit
What muscle is being tested with elbow flexion while the forearm is supinated?
biceps
What muscle is being tested with elbow flexion while the forearm is pronated?
brachialis
What muscle is being tested with elbow flexion while the forearm is is neutral?
brachioradialis
What muscles are you testing with elbow EXT contractile testing?
triceps
anconeus
What muscles are you testing with SUP contractile testing?
supinator
biceps
What muscles are you testing with PRON contractile testing?
PT
PQ
What are the rules for palpating muscles and muscle tendons of the elbow?
- have the target muscle contracted repeatedly to ensure you have the right tendon
- palpate as close to the tendon as possible
Where does the MCL connect?
medial epicondyle of humerus to the proximal medial ulna
What does the MCL do?
Provides medial elbow against valgus forces
What are the parts of the MCL?
anterior band
posterior band
transverse band
To test the anterior band of the MCL, what position should you place the elbow in?
20-30 degrees of flexion
To test the posterior band of the MCL, what valgus test should you use?
milking maneuver
What does the LCL attach to?
lateral epicondyle of the humerus
annular ligament at the radial head
supinator crest of ulna
What does the LCL do?
Provide stability against varus forces
What are the lateral epicondylitis tests?
mill’s test
maudsley’s test
cozen’s test
tinel’s test
What mobilization of the humeroradial joint restores FLX?
anterior glide of the radius
What mobilization of the humeroradial joint restores EXT?
posterior glide of the radius
What mobilization of the proximal radioulnar joint restores SUP?
anteromedial glide of the radius
What mobilization of the proximal radioulnar joint restores PRON?
posterolateral glide of the radius
