The posterior interosseous nerve Anatomy : Nerves of Upper limb

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- / drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- t.me/bhanuprak...
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- linktr.ee/DrGB...
Posterior interosseous nerve
-----------------------------------------------
The posterior interosseous nerve, also known as the dorsal interosseous nerve, is the continuation of the deep branch of the radial nerve after it penetrates the supinator muscle. It carries fibres from the C7 and C8 spinal nerves, and supplies the majority of the muscles in the posterior compartment of the forearm.
Gross anatomy
-------------------------
Origin
---------
The posterior interosseous nerve continues from the deep branch of the radial nerve and derives fibres from spinal nerve root levels C7 and C8.
Course
------------
After spiraling laterally around the radial head the deep branch of the radial nerve pierces and innervates the supinator muscle, becoming the posterior interosseous nerve. The posterior interosseous nerve officially originates from the deep branch of the radial nerve under the arcade of Frosche (supinator arch), a fibrous arch at the superior aspect of the supinator muscle. The nerve then runs in a fascial plane between the superficial and deep extensor muscles and eventually reaches the interosseous membrane. Along its course the posterior interosseous branch supplies motor innervation to all the muscles in the posterior compartment of the forearm, and finally provides sensory fibres to the dorsal aspect of the carpus.
Branches and supply
---------------------------------
The posterior interosseous nerve supplies multiple muscles, four superficial extensors and five deep extensors in the posterior compartment of the forearm. These are:
• superficial
o extensor carpi radialis brevis (ECRB): deep branch of radial nerve
o extensor digiti minimi (EDM)
o extensor carpi ulnaris (ECU)
o extensor digitorum
• deep
o supinator: deep branch of radial nerve
o extensor indicis
o abductor pollicis longus (APL)
o extensor pollicis longus (EPL)
o extensor pollicis brevis (EPB)
The posterior interosseous nerve provides sensory fibres to the dorsal aspect of the wrist capsule, arising in a separate fascicle sheath from the deep radial aspect in the fourth extensor compartment. The nerve does not provide cutaneous branches.
Relations
---------------
The posterior interosseous nerve runs in close proximity to the posterior interosseous artery, which also passes along the posterior aspect of the interosseous membrane. The posterior interosseous artery is the principle artery supplying the middle third of the posterior compartment of the forearm. The posterior interosseous artery is eventually replaced by the anterior interosseous artery that pierces the interosseous membrane at the proximal aspect of the pronator quadratus muscle.
#Posteriorinterosseousnerve #anatomyofposteriorinterosseousnerve #radialnerve #anatomy #upperlimbnerves #upperlimbanatomy #medicalstudents #fmge #usmleprep #usmlepreparation #drgbhanuprakash #usmle #mbbslectures #nationalexitexam #medicalcollege #nationalexittest

[@doctorbhanuprakash]

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- linktr.ee/DrGBhanuprakash

[@huzaifabajwa1013]

I can never find better explanation than this one.
Perfect!!

[@doctorbhanuprakash]

Thank u so much

[@luigidegregorio5153]

Only a deep knowledge can reach such a cristal clear expenation

[@vidhatisharma8425]

Thank you so much Sir... I have never seen such kind of Videos before.. Thanks for your hardwork whatever you have done for this topic so that it could reach this level.

[@nalakarathnayake4122]

Better explanation I had never seen...

[@alevelsdemystified3410]

This was really awesome and helpful!

[@fahmidanajninjoly8897]

Very nice explanation.

[@doctorbhanuprakash]

Tysm

[@daisymarquez8352]

Amazing, thank you!!

[@snehavimal5772]

Awesome lecture sir

[@meet6689]

Recovery time

[@pranabpal4530]

good.

[@shakibzafar558]

According to bd chaurasia's human anatomy, all the extensor muscles of forearm are innervated by deep branch of Radial nerve except anconeus,brachioradialis and ECRL rather than posterior interosseous nerve.
But this video made everything clear

[@doctorbhanuprakash]

When I read BD charisma even I was confused like he'll later I referred Greys and Vishram Singh and also I checked some of explanation from UWORLD and made video finally .. thanks for watching

[@yogeeta-4477]

Thankyou dr😀

[@doctorbhanuprakash]

Ur most welcome

[@ponbharathimahalingam8474]

I am affected by this PIN syndrome., So what might me the reason ? pls tell me

[@AmanSahu-xb7pg]

Hi, I wanted to know have you got cured.

[@sakthikumar0509]

Sir why these nerves always ends as a PSEUDOGANGLION sir..reply sir

[@muvvalamaneesha9836]

Your teaching is awesome sir

[@doctorbhanuprakash]

Tysm

[@mahekhollics6341]

Supinator ms deep ms mai ata h but still it is innervated by deep branch of radila nerve right

[@doctorbhanuprakash]

yes

[@kinjalbambhaniya4776]

🙇‍♀️

[@KeMbbs]

Great job Sr 👏🏻👏🏻

[@thecomicreadern4344]

Sir what are your reference books?

[@doctorbhanuprakash]

41st edition greys , snells , kenhub , kaplan and indian pg mcq books

[@159taibafarooq4]

👍👍

[@316fatimawalikhan8]

Really awesome 👍

[@doctorbhanuprakash]

Thanks for the visit

[@nimranaseer1096]

Sir...your lectures are amazing ....u made anatomy easy for me.
.thanks

[@doctorbhanuprakash]

thank u

[@dheerajkanchi2229]

Sir make a video on superficial and deep palmar arches

[@doctorbhanuprakash]

Sure

[@dheerajkanchi2229]

Tq sir

[@amnaahmed1066]

very nice explanation doctor ! As A medical student from university of Baghdad thanks!

[@amitlaskar8543]

Thank you Sir. Your demonstration is very good.

[@doctorbhanuprakash]

ur welcome

[@prat911k]

Sir supinator is pierced by superficial radial nerve ?

[@alexandrabrookefruhwirth1265]

Very helpful thank you Doctor 😊

[@rafihadar5286]

Great, amazing lectures for medical students , thx alotttt

[@doctorbhanuprakash]

Tysm

[@Nabiyah1]

I don't know how this video isn't viral. Excellent Information & Demonstration! Thank you 💜

[@doctorbhanuprakash]

Thank you so much... 💓

[@NadeemAhmad-cl4th]

Very good demonstration....keep it up

[@doctorbhanuprakash]

Tysm

[@AbigailSnyder-js2mc]

We're being taught at my DPT school the Supinator mm is innervated by the posterior interroseous N , not the deep br of radial n? However the extensor carpi radialis brevis is 🤨

[@doctorbhanuprakash]

u have thought wrong

[@AbigailSnyder-js2mc]

@@doctorbhanuprakash it's not my thought lol, I am telling you it is what we are being taught. It is on our muscle chart. So I am confused. Thanks

[@o3hifzaliaqat387]

U r simply awesome!!!

[@doctorbhanuprakash]

Thank u so much

[@medads9401]

Wonderful.

[@tahirayub2135]

plz explain posterior interisseous artery also,1 chz ko explain kr dty hen to doosri chz ko nhi krty nerve ko explain krdiya to artery ko nhi kiya ya artery ko kr dty hen to nerve ko mhi krty,plz sir explain posterior interisseous artery also

[@doctorbhanuprakash]

Every thing is explained but I cant post all videos on youtube .. I have more than 300 aninated videos just on anatomy ... www.medvizz.com , they are for subscription ...