Updated: 12/31/2021

Lumbrical Muscles

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Topic
Review Topic
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0
N/A
N/A
Questions
1
0
0
0%
0%
Evidence
3
0
0
Topic
Images
https://upload.orthobullets.com/topic/10051/images/Lumbricals_moved.jpg
  • Summary
      • Lumbricals (4 muscles)
      • Origin
      • FDP tendon
      • Insertion
      • Radial lateral band of the extensor expansion (tendon)
      • Action
      • Extends PIP and DIP joint.
      • Innervation
      • 1st & 2nd lumbricals: median nerve.
      • 3rd & 4th lumbricals: ulnar nerve
      • Arterial supply
      • Palmar metacarpal arteries

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Flashcards (0)
Cards
1 of 0
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?

QID: 389
1

1st lumbrical

65%

(2918/4479)

2

1st dorsal interosseous

7%

(325/4479)

3

4th dorsal interosseous

3%

(146/4479)

4

4th lumbrical

19%

(833/4479)

5

4th palmar interosseous

5%

(224/4479)

L 3 D

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Evidence (3)
VIDEOS & PODCASTS (2)
EXPERT COMMENTS (3)
Private Note