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Intrinsic Muscles of the Hand
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- เผยแพร่เมื่อ 13 มี.ค. 2021
- 📌𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- / drgbhanuprakash
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Hypothenar Eminence:
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- muscles of hypothenar eminence are abductor, flexor, opponens digiti minimi, & palmaris brevis;
- muscles of hypothenar eminence are innervated by ulnar nerve;
Thenar Eminence:
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- muscles of thenar eminence are APB, flexor pollicis brevis, & opponens pollicis;
- muscles of thenar eminence, w/ exception of deep head of FPB, which is innervated by ulnar nerve, are supplied by median;
- all thenar & hypothenar muscles, except abductor minimi, originate partly from transverse carpal ligament;
- their insertions are primarily on base of proximal phalanx of thumb & little finger, except for both opponens muscles,
which insert on their respective metacarpals.
- Interossei:
- anatomy:
- 7 in number, 4 are dorsal & 3 volar.
- their origin is from the metacarpal shafts.
- dorsal interossei:
- 1st & 4th dorsal interossei insert on radial aspect of index & ulnar side of ring fingers;
- 2nd & 3rd insert on radial & ulnar sides of long finger respectively;
- occassionally, short masses of muscle originate from carpal bones or from base of metacarpals on dorsum
of hand & appear as enlargements similar to cysts or other bone or soft tissue lesions;
- these accessory muscle masses are similar to muscle belly of extensor digitorum brevis on the dorsum of the foot;
- recognition of these muscle abnormalities is important in diff dx;
- dorsal Interossie abduct index & ring fingers & adduct long finger to either side of a line drawn through its longitudinal axis;
- palmar interossei:
- 1st volar interosseous inserts on ulnar side of index digit, and 2nd & 3rd insert on radial aspect of ring and little fingers;
- volar interossei are thus positioned to adduct these digits toward the long finger;
- site of insertion of these muscles accounts for development of ulnar deviation of little finger if motor branch of ulnar nerve is injured;
- interossei, along w/ 4 lumbricals, also flex MP & extend IP joints;
- radial interossei tend to insert into bone w/ lesser insertions into extensor hood;
- volar interossei & lumbricals usually insert into lateral band expansion;
- lumbricales arise from tendonns of FDP in mid-palmar area & insert into radial aspect of dorsal hood.
- innervation:
- all interossei & 3rd & 4th lumbricale s are innervated by ulnar nerve;
- first and second lumbricales are supplied by median;
#intrinsicmusclesofthehand #handmuscles #musclesofhand #musclesofthehand #upperlimbanatomy #upperlimbmuscles #anatomy #neetpganatomy #mbbsanatomy #usmleanatomy
we really appreciate you work in field of free medical education. The content is very premium and better than marrow and prepladder. on TH-cam there are many videos for PG students but no videos for MBBS students also they are very short. But your videos are best. Please cover each and every chapter of anatomy faster. And please upload detailed long lectures
Very very useful ❤
After a long struggle, I found this channel...Now I feel Anatomy is the easiest subject...Thank you all the members of this channel for giving free education to us...
You are most welcome
Thankyou for giving us premium content,even rich people and countries can't do this.
thank u so much
Thanks for high quality educational videos respected madam...
There's no word to describe how good the lecture was. It's simply fantastic
Loved the way mam taught iam a regular learner from this channel and love all the videos please make more and more videos..
Thanks all of you knowledge of God bless all of you
Thank you for providing such great anatomy sessions❤God bless you
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wrong mark for Trapezium bone (in APB muscle)
Thank you so much mam for the video. It is very useful
Omg mam this was the first video i saw of urs and now I think its going to be indispensable 🙏🏻
Nice
Thank you Dr.. i really thought it was so hard to know all the 20 muscles but you simplified it.....
Glad it was helpful!
Thank you, Master !
God bless u🙏
10:25
11:58 Thenar mucles
13:54 Abductor Pollicis Brevis
15:09 Flexor Pollicis Brevis
16:35 Opponens Pollicis
17:49 Adductor Pollicis
Thanks Mam 😀😀😀... app ke lecture dekh ke concepts clear ho jate hai..
Tysm
good work
but 14.19 she marked trapezium wrong,
Thank you so much maam. you made this topic so easy😇🙏
I will suggest my juniors for your chanal
Tqsm mam I'm greatful to ur cls..... mam plz help me to study first year anatomy 🤨🤗
Thank you mam
Thank you
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Awesome
Thank you so much mam ✨
Thanku mam
Superb.
Mam is the lover of red color 😚
Why the distal phalange remains unaffected (extended) in duputryens contracture please???
Best Channel for Anatomy ❤👍, Tomorrow is my exam, it helped alot 🥲🔥
Tysm
**Correction: You have indicated hamate bone as trapezium
Thank you😃😃
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Very useful video ❤
Glad you think so!
Helped a lot ...thank u🥰
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Extensors compartment of forearm ms video ???
Thanks
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Before your lecture it seems like hell 😶 But after watching your videos it becomes Halwa 👀. Tysm for this. God Bless You ❤️🙏 😋
My pleasure 😊
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hlo
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Madam,, do you have paid subscription..
www.medvizz.com
Bhanu zir would have done better. Any way nice
Thanks mam