MSK 16 - Upper Limb-II

Question 1

What are the muscle-joint rules of the upper limb?

Answer 1

Question 2

In the upper arm, which nerves are typically responsible for flexion and extension?

Answer 2

Flexion - musculocutaneous nerve

Extension - radial

Question 3

What are the muscles of the anterior compartment of the upper arm? What do they do and what innervates them?

Answer 3

Question 4

What are the muscles of the posterior compartment of the upper arm? What do they do and what innervates them?

Answer 4

Question 5

Point out the long, lateral, and medial heads of the triceps brachii

Answer 5

Question 6

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Question 7

What are aponeuroses?

Answer 7

Layers of flat broad tendons

Question 8

What is the cubital fossa? What is another name for it?

Answer 8

The triangular area on the anterior view of the elbow of a human or other hominid animal. It is also called the antecubital fossa because it lies anteriorly to the elbow (Latin cubitus) when in standard anatomical position.

Question 9

What are the borders and contents of the cubital fossa?

Answer 9

Question 10

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Question 11

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Question 12

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Question 13

Describe the paths of the veins of the cubital fossa and upper arm.

Answer 13

Question 14

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Question 15

How many articulations and synovial cavities are present at the elbow joint? List the articulations?

Answer 15

Question 16

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Question 17

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Question 18

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Question 19

Label the triceps, humerus, anterior humerus line, anterior fat pad, radius, capitulum, ulna, and radiocapitellar line.

Answer 19

Question 20

What is the significance of the radiocapitellar line?

Answer 20

A line drawn down the neck of the radius should intersect the capitulum. If it does not, then something is dislocated

Question 21

What is a subluxation?

Answer 21

A slight misalignment

Question 22

What is a pulled elbow? What is another name for it? What population does it most commonly affect and how is it treated?

Answer 22

Question 23

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Question 24

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Question 25

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Question 26

What are the branches of the ulnar, median, and radial nerves that we need to know?

Answer 26

Ulnar Nerve - does have branches but none we need to know

Median nerve - anterior interosseus nerve

Radial nerve - deep radial nerve and posterior interosseus nerve

Question 27

List the superficial muscles of the anterior compartment of the forearm. Mention their actions and what nerve innervates them.

Answer 27

Question 28

What is the common flexor tendon?

Answer 28

A tendon that attaches to the medial epicondyle of the humerus and serves as the upper attachment point for the superficial muscles of the front of the forearm

Question 29

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Question 30

What do there acronyms stand for:

• CMCJ
• MCPJ
• IPJ
• PIP(J)
• DIP(J)
• FDS
• FDP

Answer 30

• CMCJ - carpometacarpal joints
• MCPJ - metacarpophalangeal joints
• IPJ - interphalangeal joint
• PIP(J) - proximal interphalangeal joint
• DIP(J) - distal interphalangeal joint
• FDS - flexor digitorum superficialis
• FDP - flexor digitorum profundus

Question 31

List the muscles of the middle layer of the anterior compartment of the forearm. Mention their actions and the nerves that innervate them.

Answer 31

Question 32

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Question 33

List the deep muscles of the anterior compartment of the forearm. Mention their actions and what nerves innervate them.

Answer 33

Question 34

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Question 35

Where do the FDS and FDP attach?

Answer 35

Question 36

What do the FDS and FDP do?

Answer 36

Question 37

List the superficial muscles of the posterior compartment of the forearm. Mention their actions and nerves that innervate them.

Answer 37

Question 38

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Question 39

List the deep muscles of the posterior compartment of the forearm. Mention their actions and the nerves the innervate them.

Answer 39

Question 40

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Question 41

Describe the tennis and golfer’s elbow conditions

Answer 41