Anterior forearm

Question 1

What are the superficial muscles of the anterior forearm? (4)

Answer 1

pronator teres
flexor carpi ulnaris
flexor carpi radialis
palmaris longus

Question 2

what are the intermediate muscles of the anterior forearm? (1)

Answer 2

flexor digitorum superficialis

Question 3

What are the deep muscles of the anterior forearm? (3)

Answer 3

pronator quadratus
flexor pollicis longus
flexor digitorum profundus

Question 4

What are the only two muscles not supplied by the median n. in the anterior forearm? What nerve are they supplied by?

Answer 4

flexor carpi ulnaris

flexor digitorum profundus (the 4th and 5th digit part)

Question 5

What are the two major arteries of the anterior forearm? What are they branches of?

Answer 5

ulnar a. and radial a.

they are branches of the brachial a.

Question 6

What are the branches of the ulnar artery?

Answer 6

anterior and posterior ulnar recurrent
common interosseous artery
becomes superficial palmar arch
arch becomes palmar common digitital a
common becomes proper

Question 7

What are the branches of the radial artery?

Answer 7

radial recurrent

palmar carpal branch

Question 8

What provides cutaneous sensation to the anterior forearm?

Answer 8

lateral antebrachial cutaenous-lateral anterior forearm

medial antebrachial cutaeneous-medial anterior forarm

Question 9

What can cause medial epicondylitis tendonitis? What muscle tendons are impacted? What nerve is irritated?

Answer 9

excessive wrist and elbow flexion (from golf, pitching etc)
pronator teres and flexor carpi radialis
these inflammed tendons compress the median n.

Question 10

What causes anterior interosseous syndrome? What muscules are impacted and what is the sign?

Answer 10

compression of the interosseous branch of the median n.
flexor pollicis longus and flexor digitorum profundus are impaired
-patient will have an abnormal “okay” sign and weak pincer movement

Question 11

What causes median n. damage? what are the signs and what movements are impaired?

Answer 11

injury at the elbow
causes “hand of benediction”
impaired flexion of PIJ, DIJ, and MJP 1-3. also lumbricals 1&2

Question 12

What causes “Claw hand”? What muscles are impaired?

Answer 12

damage to the distal ulnar n.

MPJ is hyperextended and IPJ flexed because there is unopposed action of the extensor muscles

Question 13

What is the path of the median nerve in the forearm?

Answer 13

crosses medial to the cubital fossa
between heads of pronator muscles
between FDS and FDP
ends with anterior interosseous branch

Question 14

What is the path of the ulnar n in the forearm?

Answer 14

enters medial epicondyle 
passes lateral to flexor carpi ulnaris
descends between FDS and FDP
becomes superficial at distal forearm
goes between flexor retinaculum to enter palm