Deck 11: Elbow Joint

Question 1

Which muscle originates on the distal half of the humerus (anterior surface)and inserts on the coronoid process and the ulnar tuberosity of the ulna?

A) Coracobrachialis
B) Short head of biceps brachii
C) Brachialis
D) Supinator

Answer 1

C

Question 2

The position of the elbow and shoulder that could potentially make the biceps brachii muscle actively insufficient would be which of the following?

A) Shoulder extension and elbow flexion
B) Shoulder flexion and elbow extension
C) Shoulder flexion and elbow flexion
D) Shoulder extension and elbow extension

Answer 2

C

Question 3

Which muscle originates on the lateral epicondyle of the humerus and inserts on the anterior surface of the proximal radius?

A) Anconeus
B) Pronator teres
C) Pronator quadratus
D) Supinator

Answer 3

D

Question 4

Which muscle originates on the humeral lateral condyle and inserts on the radial styloid process?

A) Brachioradialis
B) Flexor carpi radialis
C) Pronator teres
D) Pronator quadratus

Question 5

Measured from the position of the forearm in neutral or midposition,which of the following is true regarding normal ROM for pronation and supination?

A) There is more supination than pronation.
B) There is more pronation than supination.
C) There are equal amounts of available pronation and supination.
D) It depends on how much elbow extension the arm is placed in to measure the motion.

Question 6

Weakness of the biceps brachii muscle could indicate trauma to which of the following nerves?

A) Musculocutaneous nerve
B) Median nerve
C) Ulnar nerve
D) Radial nerve

Question 7

The bony landmark located at the posterior lateral side of the radius at the distal end is called the

A) olecranon process.
B) radial tuberosity.
C) radial head.
D) styloid process.

Question 8

The elbow flexor that is most effective (strongest)with the forearm in the neutral position is which of the following muscles?

A) Biceps brachii
B) Brachioradialis
C) Brachialis
D) Coracobrachialis

Question 9

The muscles that would act on the forearm to neutralize forearm supination would be which of the following muscles?

A) Triceps and pronator teres
B) Pronator teres and pronator quadratus
C) Brachialis and brachioradialis
D) Triceps and anconeus

Question 10

The triceps is responsible for which of the following actions?

A) Elbow flexion and forearm supination
B) Forearm supination
C) Elbow extension
D) Elbow extension and wrist radial deviation

Question 11

The bony landmark of the ulna,which forms the prominent posterior point of the elbow,is which of the following?

A) Olecranon fossa
B) Olecranon process
C) Coronoid process
D) Radial head

Question 12

Which muscle originates on the humeral medial epicondyle and proximal ulna and spans the elbow anteriorly to attach on the lateral surface of the radius near its midpoint?

A) Supinator
B) Pronator teres
C) Anconeus
D) Brachialis

Question 13

Which of the following groups are the prime movers in elbow flexion?

A) Biceps,supinator,and brachialis
B) Brachialis,brachioradialis,and anconeus
C) Biceps,pronator teres,and supinator
D) Brachialis,biceps,and brachioradialis

Question 14

Weakness of the pronator teres muscle could indicate trauma to which of the following nerves?

A) Musculocutaneous nerve
B) Median nerve
C) Ulnar nerve
D) Radial nerve

Question 15

Which ligament spans the elbow longitudinally (long ways)on the little finger side of the elbow?

A) Lateral collateral ligament
B) Annular ligament
C) Medial collateral ligament
D) Proximal radioulnar ligament

Question 16

The broad,flat membrane located longitudinally between the radius and the ulna is called the

A) thoracolumbar fascia.
B) joint capsule.
C) interosseous membrane.
D) annular ligament.

Question 17

The carrying angle at the elbow exists because of which of the following phenomena at the distal end of the humerus?

A) The lateral structures extend farther distally than the medial structures.
B) The medial structures extend farther distally than the lateral structures.
C) The anterior structures extend farther distally than the posterior structures.
D) The posterior structures extend farther distally than the anterior structures.

Question 18

When you have a patient do a "chair push-up" to strengthen the elbow triceps,what type of kinetic chain activity is this?

A) Open chain
B) Closed chain
C) This exercise has elements of both closed and open chains.
D) Neither

Question 19

Elbow extension occurs in which plane and through which axis?

A) Transverse plane through a vertical axis
B) Frontal plane through a sagittal axis
C) Sagittal plane through a frontal axis
D) Transverse plane through a transverse axis

Question 20

Weakness of the triceps brachii muscle could indicate trauma to which of the following nerves?

A) Musculocutaneous nerve
B) Median nerve
C) Ulnar nerve
D) Radial nerve

Question 21

Your patient has point tenderness at the common flexor origin at the elbow.Given this symptom,which diagnosis is likely?

A) Medial epicondylitis
B) Lateral epicondylitis
C) Tendonitis of biceps tendon
D) Volkmann's ischemic contracture

Question 22

A common elbow pathology often caused by repetitive wrist extension activities is which of the following?

A) Medial epicondylitis
B) Lateral epicondylitis
C) Tendonitis of biceps tendon
D) Volkmann's ischemic contracture