Updated: 10/19/2017

Lumbrical Muscles

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Topic
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Questions
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100%
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Evidence
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https://upload.orthobullets.com/topic/10051/images/Lumbricals_moved.jpg

Origin FDP tendon
Insertion Radial lateral band of the extensor expansion (tendon)
Action Extends PIP and DIP joint.
Innervation

1nd & 2nd lumbricals innervated by median nerve
3rd & 4th lumbicals innervated by ulnar nerve

Arterial Supply Palmar 1 - 3: Palmar metacarpal arteries

 
 

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Average 4.2 of 5 Ratings

Questions (1)

(OBQ08.3) Which of the following unipennate muscles takes its origin on the radial side of the profundus tendon, inserts on the radial lateral band at the middle phalanx, and creates a force vector that is palmar to the joint axis of the metacarpophalangeal joint? Tested Concept

QID: 389
1

1st lumbrical

65%

(2301/3554)

2

1st dorsal interosseous

7%

(233/3554)

3

4th dorsal interosseous

3%

(103/3554)

4

4th lumbrical

20%

(704/3554)

5

4th palmar interosseous

5%

(185/3554)

L 3 D

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Evidences (3)
Topic COMMENTS (3)
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