Anatomy

Question 1

Flexor digitorum profundus vs. superficialis test

Answer 1

FDP - Flex the DIP (tip of finger when rest held in place) FSP - Flex PIP (hold other fingers down and flex to test)

Question 2

Draw the brachial plexus

Answer 2

Axillary artery runs through it –> Brachial artery

Question 3

Erb’s palsy

Answer 3

Upper trunk (lateral traction on neck - delivery or accident) - waiter’s tip - Delt, supraspinatus, infraspinatus, biceps

Question 4

Klumpke palsy

Answer 4

Total claw hand from upward arm traction or falling from tree - lumbricals, interossei, thenar, hypothenar deficit, lumbricals (usu. flex at MCP, extend distally)

Question 5

Winged scapula

Answer 5

Long thoracic nerve (C5-7) from axillary dissection

Question 6

Axillary nerve injury

Answer 6

Flat/numb delt - surgical neck of humerus fx, anterior dislocation –> post. circumflex artery at risk

Question 7

Radial nerve injury

Answer 7

Midshaft fracture - crutches (deep brachial artery at risk)

Question 8

Musculocutaneous nerve injury

Answer 8

flexion, supination, lateral forearm sensory

Question 9

Median nerve

Answer 9

Supracondylar fracture or carpal tunnel

Question 10

Ulnar nerve

Answer 10

Med. epicondyle injury or hook of hamate

Question 11

Thoracodorsal nerve

Answer 11

lat dorsi

Question 12

What is in carpal tunnel

Answer 12

Median nerve, Flexor digitorum profundus/superficialis tendons, Flexor pollicis brevis

Question 13

What tendon is outside of carpal tunnel

Answer 13

palmaris longus

Question 14

Median nerve muscles in hand

Answer 14

OAF pollicis Thenar muscles (Opponens pollicis, Abductor pollicis brevis, flexor pollicis brevis) + 1st/2nd lumbricals (flex MCP, extend PIP/DIP)

Question 15

Ulnar hand muscles

Answer 15

OAF digiti minimi - hypothenar - Opponens digiti minimi, Abductor digiti minimi, Flexor digiti minimi

Question 16

Anterior leg compartment

Answer 16

Anterior compartment - Deep peroneal nerve - Tib ant, extensor hallucis, extensor digitorum, peroneus tertius

Dorsiflex foot

Charcot marie tooth (genetic problem w/Schwann cell)

Question 17

Medial compartment thigh

Answer 17

Obturator nerve - Gracilis, adductor longus/brevis, adductor magnus

Question 18

Lateral compartment leg

Answer 18

Superficial peroneal nerve - peroneus longus/brevis

Everts foot

Question 19

Sural nerve

Answer 19

cutaneous sensation - lateral behind lateral foot

Question 20

Posteroir compartment thigh

Answer 20

Tibial nerve - semimembranosus, semitendinosus, biceps femoris, posterior adductor magnus

Question 21

Posterior compartment leg

Answer 21

Gastrocs, soleus, flexor digitorum longus, flexor hallucis longus, tib posterior

• Stand on tiptoes

Question 22

Sarcomere fiber lines

Answer 22