Difference between revisions of "INTRINSIC MUSCLES OF THE HAND-LUMBRICALS"
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===== [[Summary Article|'''SUMMARY''']] ===== | ===== [[Summary Article|'''SUMMARY''']] ===== | ||
FIRST & SECOND LUMBRICALS | <i>FIRST & SECOND LUMBRICALS</i> | ||
<br/>1. O: lateral 2 FDP tendons. 2. I: tendons pass through a fibrous lumbrical canal to insert into the <i>lateral side of the extensor expansion</i> of digits 2 & 3. | <br/>1. O: lateral 2 FDP tendons. 2. I: tendons pass through a fibrous lumbrical canal to insert into the <i>lateral side of the extensor expansion</i> of digits 2 & 3. | ||
<br/>3. NS: digital branches of the median n. | <br/>3. NS: digital branches of the median n. | ||
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<br/>5. A: extend the interphalangeal joints, flex the MCPJ. | <br/>5. A: extend the interphalangeal joints, flex the MCPJ. | ||
<br/> | <br/> | ||
<br/>THIRD & FOURTH LUMBRICALS | <br/><i>THIRD & FOURTH LUMBRICALS</i> | ||
<br/>6. O: medial 2 FDP tendons. | <br/>6. O: medial 2 FDP tendons. | ||
<br/>7. I: tendons pass through a fibrous lumbrical canal to insert into the <i>lateral side of the extensor expansion</i> of digits 4 & 5. | <br/>7. I: tendons pass through a fibrous lumbrical canal to insert into the <i>lateral side of the extensor expansion</i> of digits 4 & 5. | ||
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<br/> | <br/> | ||
<br/>10. A: extend the interphalangeal joints, flex the MCPJ. | <br/>10. A: extend the interphalangeal joints, flex the MCPJ. | ||
<br/>[[Image:intrinsic-muscles-of-the-hand.jpg]] | <br/>[[Image:intrinsic-muscles-of-the-hand.jpg]] | ||
<br/>Image: Case courtesy of OpenStax College, [https://radiopaedia.org/ Radiopaedia.org]. From the case [https://radiopaedia.org/cases/44017 rID: 44017] [Accessed 18 Nov. 2018]. | <br/>Image: Case courtesy of OpenStax College, [https://radiopaedia.org/ Radiopaedia.org]. From the case [https://radiopaedia.org/cases/44017 rID: 44017] [Accessed 18 Nov. 2018]. | ||
Latest revision as of 18:52, 8 January 2023
SUMMARY
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.
Image: Case courtesy of OpenStax College, Radiopaedia.org. From the case rID: 44017 [Accessed 18 Nov. 2018].
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.
