Home
Radiology Guides Anatomy Physio & Path Medicine Physics Contact
INTRINSIC MUSCLES OF THE HAND-LUMBRICALS

Anatomy-Upper Limb

INTRINSIC MUSCLES OF THE HAND-LUMBRICALS

FIRST & SECOND LUMBRICALS
1. O: lateral 2 FDP tendons.
2. I: tendons pass through a fibrous lumbrical canal to insert into the lateral side of the extensor expansion of digits 2 & 3.
3. NS: digital branches of the median n.
4. BS: superficial & deep palmar arches.
5. A: extend the interphalangeal joints, flex the MCPJ.

THIRD & FOURTH LUMBRICALS
6. O: medial 2 FDP tendons.
7. I: tendons pass through a fibrous lumbrical canal to insert into the lateral side of the extensor expansion of digits 4 & 5.
8. NS: deep branch of the ulnar n.
9. BS: superficial & deep palmar arches.
10. A: extend the interphalangeal joints, flex the MCPJ.


Avatar
REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: Case courtesy of OpenStax College, Radiopaedia.org . From the case rID: 44017 [Accessed 18 Nov. 2018]

Ⓒ A. Manickam 2018

+ Home