Unit 1_The Elbow & Cubital Fossa

Question 1

What bony structures make up the elbow?

Answer 1

3-joints that use the same capsule

2 hinge joints & 1 pivot joint

Question 2

What are the joints of the elbow?

Answer 2

Humeroradial Joint

Humeroulnar Joint

Proximal Radioulnar Joint

Question 3

What joint in the elbow separates the Humerus and the Radius, and includes the Capitulum (round) and Radial Head?

Answer 3

Humeroradial Joint

Question 4

What joint in the elbow separates the Humerus and Ulna, and includes the Trochlea and the Trochlear Notch of the Humerus?

Answer 4

Humeroulnar Joint

Question 5

What joint in the elbow separates the Radius and Ulna?

Answer 5

Proximal Radioulnar Joint

Question 6

What is a groove for prominences to go into?

Answer 6

Fossa

Question 7

What does the Coronoid Process go directly into when extension of the elbow occurs?

Answer 7

Coronoid Fossa

Question 8

What does the Olecranon Process go directly into when extension of the elbow occurs?

Answer 8

Olecranon Fossa

Question 9

What two structures of the elbow are made up of shiny cartilage and filled with synovial fluid?

Answer 9

Capitulum

Trochlea

Question 10

What elbow joint is tight and difficult to dislocate?

Answer 10

Humeroulnar Joint

Question 11

What elbow joint has space and is easily dislocated?

Answer 11

Humeroradial Joint

Question 12

What bony structure in the elbow is big, poky and easy to palpate?

Answer 12

Medial Epicondyle

Question 13

What bony structure provides stability for the Humeroulnar Joint?

Answer 13

Trochlear notch

Question 14

What is a normal carrying angle for our arms?

Answer 14

5-10 degrees for males

10-15 degrees for females

Question 15

What is excessive cubitus valgus in the arm?

Answer 15

30 degrees

Question 16

What is cubitus varus in the arm?

Answer 16

-5 degrees

Question 17

What two structures provide support to the elbow?

Answer 17

Ligaments and muscles

Question 18

What ligaments in the elbow provide support and are commonly injured?

Answer 18

Ulnar Collateral Ligament (on the Ulnar side)

Radial Collateral Ligament (on the Radial side)

Annular Ligament of Radius (encircles the head of the radius and holds it in place)

Question 19

What ligamentus structure encapsulates the elbow joint?

Answer 19

Elbow Joint Capsule

Question 20

What muscle pulls the ulna against the humerus when extension of the elbow occurs?

Answer 20

Triceps brachii muscle

Question 21

What muscle attaches to the capsule of the elbow and prevents the elbow structures from getting pinched when extension of the elbow occurs?

Answer 21

Anconeous muscle

Question 22

What elbow ligament is triangular-shaped on the lateral side, provides static stability preventing the elbow from going in a Varus direction, and has anterior, middle, and posterior parts?

Answer 22

Ulnar Collateral Ligament

Question 23

What elbow ligament is cordlike on the medial side, arises from the Lateral Epicondyle, attaches to the Annular Ligament of the Radial Head and provides static stability preventing the elbow from going in a Valgus direction by rotating over the ulna?

Answer 23

Radial Collateral Ligament

Question 24

What elbow ligament is going to ensure the radius doesn’t get dislocated and encircles the head of the radius?

Answer 24

Annular Ligament of Radius

Question 25

What are flexor muscles of the elbow?

Answer 25

Brachialis (pronation)

Biceps Brachii (supinator)

Brachioradialis (middle - hold something/pushing up)

Pronator Teres

Question 26

What is the workhorse muscle for elbow flexion and contributes to supination?

Answer 26

Biceps Brachii

Question 27

What muscles support pronation strength to the elbow?

Answer 27

Brachialis

Brachioradialis (Forearm)

Question 28

What muscle pronates the forearm and provides elbow flexion?

Answer 28

Pronator Teres

Question 29

What are the extensor muscles of the elbow?

Answer 29

Triceps Brachii (some adduction of the glenohumeral joint)

Aconeus (insertion: posterior Ulna, Elbow Joint Capsule)

Question 30

What are the compartments of the Brachium?

Answer 30

Anterior (Flexors: Biceps Brachii, Brachialis)

Posterior (Extensors: Triceps Brachii)

Question 31

What are the borders of the Cubital Fossa (triangle shaped)?

Answer 31

Lateral Epicondyle

Medial Epicondyle

Brachioradialis muscle

Pronator Teres muscle

Question 32

Where is blood pressure taken?

Answer 32

At the cubital fossa in the elbow where the brachial artery is included

Question 33

What are the contents of the Cubital Fossa?

Answer 33

Bicipital aponeurosis

Tendon-biceps brachii (insertion: Radial Tuberosity)

Question 34

Where does the Brachial Artery diverge/bifurcate into the Radial Artery and the Ulna Artery?

Answer 34

At the Cubital Fossa

Question 35

What muscles are at the floor of the Cubital Fossa?

Answer 35

Brachialis muscle

Supinator muscle

Question 36

What veins are contents of the Cubital Fossa?

Answer 36

Basilic vein bifurcates into the median cubital vein (stays as basilic vein as well)

Question 37

What arteries and nerves are contents of the Cubital Fossa?

Answer 37

Brachial artery

Median nerve

Musculocutaneos nerve (forms Lateral Antebrachial Cutaneos nerve)

Radial nerve

Question 38

What nerve pierces the Supinator at the Canal of Frohse or Supinator Canal and can be impacted by Supinator Syndrome?

Answer 38

Deep Radial Nerve

Question 39

What is the Deep Radial Nerve called after passing through the Canal of Frohse (Supinator Canal)?

Answer 39

Posterior Interosseous Nerve