Cubital Fossa, Forearm and Wrist

Question 1

What are the three borders of the triangular cubital fossa?

Answer 1

Lateral border: Medial border of Brachio-radialis

Medial border: Lateral border of Pronator teres

Superior border: Imaginary line between epicondyles

Question 2

What are the 4 components of the Cubital fossa?

Answer 2

1. Median nerve
2. Brachial artery (divides into radial and ulnar arteries)
3. Biceps brachii tendon
4. Deep branch of radial nerve

Question 3

The forearm can be divided into two compartments, what are they?

Answer 3

1. Anterior flexor compartment

2. Posterior extensor compartment

Question 4

In the superficial layer of the Anterior flexor compartment, what is the common flexor origin?

Answer 4

Medial epicondyle

Question 5

In the superficial layer of the Posterior extensor compartment, what is the common extensor origin?

Answer 5

Lateral epicondyle

Question 6

Tennis Elbow affects which epicondyle?

Answer 6

Lateral epicondyle

Question 7

Falling on an outstretched hand commonly damages which wrist bone?

Answer 7

Scaphoid

Question 8

How many muscles are in the Extensor / Posterior compartment of the forearm? Which of these are in the Superficial and deep compartments?

Answer 8

12

6, 6

Question 9

What are the muscles in the Superficial compartment of the Extensor / Posterior compartment of the forearm?

Answer 9

Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris

Question 10

What are the muscles in the Deep compartment of the Extensor / Posterior compartment of the forearm?

Answer 10

Anconeus
Supinator
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Extensor indicis

Question 11

What nerve(s) innervate the Extensor compartment of the Forearm?

Answer 11

Radial nerve

Question 12

How many muscles are in the Flexor / Anterior compartment of the forearm? Which of these are in the Superficial, intermediate and deep compartments?

Answer 12

8

4, 1, 3

Question 13

What are the muscles in the Superficial compartment of the Flexor / Anterior compartment of the forearm?

Answer 13

PFPF

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

Question 14

What are the muscles in the Intermediate compartment of the Flexor / Anterior compartment of the forearm?

Answer 14

Flexor Digitorium Superficialis

Question 15

What are the muscles in the Deep compartment of the Flexor / Anterior compartment of the forearm?

Answer 15

Flexor Digitorum Profundus
Flexor Pollicis longus
Pronatur Quadratus

Question 16

What nerve(s) innervate the Flexor compartment of the Forearm?

Answer 16

Median nerve for all, except Flexor Carpi Ulnaris and 1/2 Flexor Digitorum Profundus which is Ulnar nerve

Question 17

What comprises the roof of the Carpal tunnel?

Answer 17

Flexor retinaculum

Question 18

What are the contents of the Carpal tunnel?

Answer 18

9 tendons:
1 Flexor pollicis longus
4 Flexor digitorum superficialis
4 Flexor digitorium profundus

Median nerve

Question 19

Why would Carpal Tunnel Syndrome cause Thenar wasting?

Answer 19

CTS causes Median nerve compression, leading to Thenar wasting which is supplied by the median nerve

Question 20

What is the acronym for the bones of the wrist?

Answer 20

Some lovers try positions that they cannot handle