Chapter 16 HW-Elbow
What should the carrying angle of the elbow for women be?
10° to 15°
A patient with an acutely injured elbow will frequently assume the elbow's resting position of ___ of flexion to minimize forces on the joint.
70°
An isosceles triangle is formed by the medial epicondyle, lateral epicondyle, and the olecranon process when the elbow is flexed to what degree?
90°
When a varus stress is applied to the elbow, the accessory lateral collateral ligament (ALCL) assists what ligament in preventing the radial head from separating from the ulna?
Annular ligament
Which bundle of the UCL serves as the primary restraint against a valgus force?
Anterior bundle
The radial tuberosity is the insertion site for what muscle?
Biceps brachii
Which muscle is the primary elbow flexor when the forearm is in its neutral position (radial side upward)?
Brachioradialis
What forms the lateral humeral articulating surface on the distal border of the lateral epicondyle?
Capitulum
What is the angle formed by the long axis of the humerus and ulna known as?
Carrying angle
What is it medically called when the alignment of the forearm and humerus fully extends beyond 0°?
Cubital recurvatum
What is an increase in the carrying angle of the elbow called?
Cubitus valgus
A decreased carrying angle is known as cubital valgus.
False
Laxity with valgus and varus stress testing in a fully extended position indicate severe ligamentous instability.
False
The anterior band of the anterior bundle of the MCL is primarily stressed in overhead athletes.
False
The elbow joint relies more on muscular support than ligamentous support for its stability.
False
Which of the following joints does NOT allow pronation to occur?
Humeroulnar joint
Which is the most stabilizing structure of the lateral aspect of the elbow?
LUCL
What is indicated by a hard end-feel with passive elbow flexion?
Loose body in the joint
Which of the following is the most important history finding regarding elbow trauma?
Onset & Location of Symptoms
What is the indention of the lateral epicondyle that accepts the radial head during elbow flexion?
Radial fossa
The radio ulnar joints are classified as what type of joint?
Syndesmotic
Which of the following is NOT correct in performing the tennis elbow test?
The patient is positioned with elbow flexed and supinated.
Most elbow injuries are the result of low-load repetitive stresses.
True
Which elbow ligament is divisible into three unique sections?
Ulnar collateral ligament (UCL)
Which nerve enters the elbow at the arcade of Struthers?
Ulnar nerve