Radial Nerve Glides or Nerve Flossing - Ask Doctor Jo

  Рет қаралды 204,130

AskDoctorJo

AskDoctorJo

Күн бұрын

Пікірлер: 135
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
Don't forget to hit the 🔴 *SUBSCRIBE* 🔴 button above! *Find all of my videos at **kzbin.info*
@myne5689
@myne5689 3 жыл бұрын
how many times a day can I do this, and can I still do more normal stretches during the day?
@youtubegoogle4163
@youtubegoogle4163 Жыл бұрын
I have got numbness in my arm after a long hammer curl hold in my gym last week. And now, i feel as if my nerve is gliding when I perform hammer curls. I don't have any pain, and numbness has also gone away, also there is no reduction in my strength levels. Just a feeling of gliding nerve in my wrist in making me worry a bit. Should I perform this excercise to make my wrist nerve settle down ?
@cindylpt
@cindylpt 2 ай бұрын
Wow, I have been suffering for over a month, nothing was helping, but these nerve glides really do the job. Thank you so much!
@AskDoctorJo
@AskDoctorJo 2 ай бұрын
You're welcome!
@philiplombardo249
@philiplombardo249 Ай бұрын
Wow! Thanks doctor - I’ve been having a dang bad pain in my right thumb for about four years. Came across your video and thought I’d give it a shot. The pain is almost gone after one time thru, and I can’t believe it! Felt some little pops and pulls in my neck, and then my thumb loosened up real good. Thank you a million for sharing your knowledge 🙏
@AskDoctorJo
@AskDoctorJo Ай бұрын
You're welcome! Glad it helped.
@SCYTHE2525
@SCYTHE2525 6 жыл бұрын
Thanks Jo. Glad you made room for this sort of thing. I tried those as suggested in last video and could tell a difference right after.
@AskDoctorJo
@AskDoctorJo 6 жыл бұрын
You're welcome.
@monikaencheva8939
@monikaencheva8939 3 жыл бұрын
Great exercises! Nice and clear explanation! Thank you, Dr.Jo!
@JasonBell-g1r
@JasonBell-g1r Жыл бұрын
Dr. Joe, you always have the coolest shirts! Thank you for your videos.
@edart6810
@edart6810 2 жыл бұрын
Thank you so much for this video it has helped me relieve that pain and spasms that I've been having for years.
@AskDoctorJo
@AskDoctorJo 2 жыл бұрын
You're welcome.
@staceychen3737
@staceychen3737 5 жыл бұрын
Thank you, Dr. Jo. I've tried these exercises and they are relieving the stiffness and soreness effectively. Will the nerve return to normal as long as I keep doing these exercises on a regular basis?
@AskDoctorJo
@AskDoctorJo 5 жыл бұрын
You're welcome. It should, but it really depends on what happened to it.
@bobbyyoung2831
@bobbyyoung2831 2 жыл бұрын
Thanks for the free advice...been in pain for about a year. Worked out too much. Shoulder and elbow have been popping with constant nagging pain. Mostly in shoulder. Thank you.
@AskDoctorJo
@AskDoctorJo 2 жыл бұрын
You're welcome.
@elysiium3
@elysiium3 2 жыл бұрын
I FOUND THE SOURCE OF THE TINGLING AND THUMB SWELLING!!!! THANK YOU SO MUCH
@AskDoctorJo
@AskDoctorJo 2 жыл бұрын
You're welcome!
@Vaevin-Xx
@Vaevin-Xx 4 жыл бұрын
This was really well explained and effective. Thank you!
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
Thanks, and you're welcome!
@edhong568
@edhong568 3 жыл бұрын
Princess Zelda and me from forearm pain. Thanks so much!
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
You're welcome!
@kevinbeckwith1604
@kevinbeckwith1604 Жыл бұрын
As with all videos Dr jo does really easy to understand and they work for me. Worth watching for the disclaimer alert alone. Well Funny- Thanks
@AskDoctorJo
@AskDoctorJo Жыл бұрын
You're welcome, and thanks 😎
@armnakornthab6867
@armnakornthab6867 10 ай бұрын
I am not sure what I have. The last exercise doesn’t create much tension compared to the previous exercises.
@threeelancer
@threeelancer 2 жыл бұрын
I always look for Dr. Jo specifically now when something sorta breaks :)
@Ceorolus
@Ceorolus 3 жыл бұрын
Thank you for these exercises.
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
You're welcome.
@krisannabanana
@krisannabanana 2 жыл бұрын
I haven't been able to put weight on my right hand properly for ~13 years and I only just found out that it's a radial nerve issue. I'm hoping these exercises will help... I've been getting back into yoga lately and so many basic poses are really hard because of this issue. Thanks for the video :)
@AskDoctorJo
@AskDoctorJo 2 жыл бұрын
You're welcome.
@kevinblair7285
@kevinblair7285 4 жыл бұрын
Will these help alleviate radial tunnel syndrome? Do you have any other exercises or stretches you would recommend? Thanks for all your videos- they are great!
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
You're welcome, and thanks. They might help. Also, some tennis elbow videos might help. You can find them at: kzbin.info
@tomthumb9839
@tomthumb9839 6 жыл бұрын
Hello Dr. Jo. Thanks for the video. Even though I don't have any pain and don't need to do these glides I find your videos interesting. Pet your pack for me. Most dogs seem to want all the lovin they can get. I have one that doesn't want it very often but she does want it once in awhile. I always enjoy seeing your dogs in the videos.
@AskDoctorJo
@AskDoctorJo 6 жыл бұрын
You're welcome, and thanks! My sister has a dog who is not very cuddly, but she does like some lovin' every once in awhile too :-)
@tomthumb9839
@tomthumb9839 6 жыл бұрын
AskDoctorJo It seems to me that dogs are as unique as humans. They all have their own personalities. My desert tortoise doesn't have much of a personality. Have a great day!
@fullthrottlemetric
@fullthrottlemetric 4 жыл бұрын
I’m super scared ! I just somehow damaged my radial nerve and have drop wrist not being able to lift my hand or fingers has me very scared as my career and hobby’s all require strong hands /arms :( It’s only been 4 days but no improvement so I went to ER and they where not very encouraging.. going to a specialist next
@RealHypocrisy
@RealHypocrisy 4 жыл бұрын
hope you figure it out dude.
@slothstradamus89
@slothstradamus89 4 жыл бұрын
I'm going through the same thing, woke up one day (almost 3 weeks ago now) and my right wrist/fingers won't extend/stretch all the way out. And are EXTREMELY weak. I'm the lead guitarist in a metal band, and am so confused as to what's happening to me. The ER was about as helpful as, "Well, it may work again OR... it may NEVER work again"...like gee thanks how very insightful and reassuring that is. *sighs* 🤕🤕🤕
@premium6924
@premium6924 2 жыл бұрын
@@slothstradamus89 hey, did you recover? Thanks
@premium6924
@premium6924 2 жыл бұрын
Hey, did you recover? Thanks
@notmyrealpseudonym6702
@notmyrealpseudonym6702 9 ай бұрын
How did you go?
@seanreed4820
@seanreed4820 4 жыл бұрын
I’ve been dealing with a radial nerve injury due to using crutches over the last 4-5 days due to Achilles tendinitis. I also have a L5 herniated disk. Pain, pain and more pain. My question...what position should I be resting my arm in while sitting and laying down? Thank you!
@cappaslangmurderer
@cappaslangmurderer 9 ай бұрын
I am sorry you have been in so much pain
@Billcee1976
@Billcee1976 3 жыл бұрын
How many times should I be doing these per day?
@DaniFernandesVideos
@DaniFernandesVideos 3 жыл бұрын
Thank you for this and all your other great videos!
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
You're welcome, and thanks!
@craighealy6186
@craighealy6186 2 жыл бұрын
Dr. Jo we love you! ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤
@abidvu2472
@abidvu2472 4 жыл бұрын
Hi DoctorJo, Are these exercises particularly for Radial nerve palsy? I've broken my upper arm bone and I have lost movements with my wrist and fingers. Thank you
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
They are not particularly for that.
@hulaplutoed
@hulaplutoed 3 жыл бұрын
So if the nerve is irritated, what are some things you'd recommend to get it to calm down?
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
It really depends on why it is irritated, but the glides might help.
@scrabbleking1965
@scrabbleking1965 3 жыл бұрын
FIVE GOLD STARS!!!!! I am an AVID FANATITCAL tennis player with strange arm pain that didn't feel like muscle or tendon and had to stop playing for nearly a year, three years ago, went to national team doctor that traveled with his team to Rio Olympics. He couldn't help me, gave me wrong diagnosis. I figured out on my own that I had an ulnar nerve issue, that flossing relieved within a few days. 3 years later arm pain returned, the ulnar nerve flossing moves weren't helping. Just tried these radial nerve moves and BINGO!!!! Trying these moves and instantly CLEARLY "feel it". Will continue on, but pretty sure I am on the right path now!
@kevinrange460
@kevinrange460 3 жыл бұрын
How often did you do these exercises and is it normal to feel some discomfort after it?
@CoorWellness
@CoorWellness 4 жыл бұрын
You're the Best Doc Jo
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
Thanks!
@FilmCompos3r
@FilmCompos3r 2 жыл бұрын
Can you give more specific guidance on number of reps and sets? I don’t really follow.
@benjison1000
@benjison1000 3 жыл бұрын
Do you want to be going the same direction as the glide, or the opposite?
@blasalejandrogomez3218
@blasalejandrogomez3218 4 жыл бұрын
Hi! Thank you for the information you offer. I ve seen your videos on radial, median and ulnar nerves flossing. Can I do all of them one after the other? Or space them in the day? My main problem are ulnar and median but I think adding radial flossing for prevention since I play piano and work a deskjob. What do you think, ten reps of each would be fine?
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
You're welcome. I would spread them out, at least when you first start doing them. Nerves can get irritated pretty easily, and some really work all of them.
@jackierenaud4772
@jackierenaud4772 9 ай бұрын
Thank you! I’ve just subscribed. These look / feel like just what I need right now. Very bad radial tunnel syndrome in right arm and now starting on left side due to compensation actions. PLEASE….how many times in a day? Definitely not going to overdo but although you say not more than ten in total at any one time - I need to know how many times a day for maximum benefit? Thanks!
@AskDoctorJo
@AskDoctorJo 9 ай бұрын
You're welcome, and thanks for subscribing. Just once a day. If it doesn't feel like it's getting irritated, it can be increased to 2x/day after a few days.
@jackierenaud4772
@jackierenaud4772 9 ай бұрын
Thank you!
@mediacopycatkillers
@mediacopycatkillers 3 жыл бұрын
Instant relief, once again thank you.
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
You're welcome.
@javad834
@javad834 Жыл бұрын
Very excellent thank you
@AskDoctorJo
@AskDoctorJo Жыл бұрын
You're welcome.
@theslightlytiltedcat
@theslightlytiltedcat 4 жыл бұрын
How many times a day should I do this exercises?
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
Nerve glides should only be done once a day.
@De113te
@De113te 6 жыл бұрын
Thanks for the upload, also nice shirt, i didn't know you were a gamer too
@AskDoctorJo
@AskDoctorJo 6 жыл бұрын
You're welcome. Just the old stuff...I can't keep up with the new gaming!!
@stua9098
@stua9098 3 жыл бұрын
Hi dr jo I have pain in both forearms the past 6 months and now my right thumb , is there any stretches that could help, thanks
@marlenemacias2875
@marlenemacias2875 5 жыл бұрын
Hello Dr. Jo, as I will be doing a total of 10 for the exercises, how many sets per day should I do? Thank you for your time
@AskDoctorJo
@AskDoctorJo 5 жыл бұрын
10 reps, just once a day for nerve glides since doing too many can irritate the nerve even more.
@calvinus111
@calvinus111 2 жыл бұрын
Thank you very much!
@AskDoctorJo
@AskDoctorJo 2 жыл бұрын
You're welcome!
@Vindiesel-fr9kd
@Vindiesel-fr9kd 6 жыл бұрын
Yeah that's it rescued princess Zelda💐💐💐🎂🎂
@skynet7065
@skynet7065 Жыл бұрын
thank you very much, how many times a day/a week is recommended?
@AskDoctorJo
@AskDoctorJo Жыл бұрын
You're welcome. Nerve glides can be done once a day, every day.
@skynet7065
@skynet7065 Жыл бұрын
@@AskDoctorJo I’m having issues caused by inflammated nerves due to a chemotherapy I’m doing… do you know if there are contraindications to perform nerve gliding exercises while having nerve toxicity related to chemo. I’m sorry for the specific question, I tried to speak with some neurologists but they looked unaware
@AskDoctorJo
@AskDoctorJo Жыл бұрын
Sorry, I don't know the answer to that question since I can't evaluate you. Everyone is different.
@skynet7065
@skynet7065 Жыл бұрын
@@AskDoctorJo thank you very much anyway
@AskDoctorJo
@AskDoctorJo Жыл бұрын
You're welcome. I hope you get some relief soon.
@parmeetdhaliwal8224
@parmeetdhaliwal8224 6 жыл бұрын
Thankyou dr. Please explain neck position in radial nerve gliding. Is it neck rotation with lateral flexion?
@AskDoctorJo
@AskDoctorJo 6 жыл бұрын
You're welcome. Just as shown in the video.
@alcottdevalte7440
@alcottdevalte7440 6 жыл бұрын
tnx, you`re the champ
@AskDoctorJo
@AskDoctorJo 6 жыл бұрын
You're welcome, and thanks!
@kevinrange460
@kevinrange460 3 жыл бұрын
Is it normal to feel discomfort after doing then?
@mohsinmohammad4166
@mohsinmohammad4166 3 жыл бұрын
Thank you😊
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
You're welcome.
@zarlodious1
@zarlodious1 2 жыл бұрын
Over a year ago I went to Top Golf/Driveshack and used their steel shafted clubs after a few really hard swings (110+ mph club speed) that were mishit I have developed radial nerve or tennis elbow. I have been flossing for 2 months now after suffering the last year playing golf weekly. I have taken up to two weeks off and still not much progress. Do you have any other advice? I am taking benfotiamine, acetyl-L-Carnitine and R-alpha lipoic acid for the last two months and yet again not much improvement. I do about 20-30 minutes of stretches and flossing per day throughout the day. The pain is most when holding a golf club in the left hand and extending the club downwards and also lifting it from full extension.
@tjs162009
@tjs162009 3 жыл бұрын
Do you have any suggestions for modifications to these glides for someone who has had a PRC surgery on both wrists? Because of that surgery I'm unable to bend my wrists enough. Thanks!
@brandysullivan9653
@brandysullivan9653 3 жыл бұрын
Dr Jo I'm wondering if you have any specific exercises for radial nerve palsy?
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
Depending on what specifically is causing the compression, I might. Do you know the root cause of yours?
@brandysullivan9653
@brandysullivan9653 3 жыл бұрын
@@AskDoctorJo I believe it was a PICC line placement while in the hospital. Having COVID I had all kinds of tubes including trach.
@AskDoctorJo
@AskDoctorJo 3 жыл бұрын
Hopefully some of the above nerve glides will help.
@anthonyjephcott8024
@anthonyjephcott8024 2 жыл бұрын
Hi Dr Jo, I'm a subscriber and love your content. I badly broke my humerus in a car accident 25 years ago and have had radial nerve pain ever since. However I have no wrist drop and can still exercise, weights etc. However at night time and after some physical exercise my radial nerve creates crazy pins and needles and severe pain which keeps me awake and causes major pain. I have scare tissue where my break occurred and I wonder if the radial nerve is being irritated by rubbing over the scare tissue. Just wondering if you've come across this type of example of radial nerve
@AskDoctorJo
@AskDoctorJo 2 жыл бұрын
Thanks. It's definitely possible that the scar tissue is irritating it.
@praveenbal6666
@praveenbal6666 3 жыл бұрын
I have a issue in my right hand tricep muscle there is no blood flow it's very week plz help me.
@skeptea
@skeptea Жыл бұрын
If this "zings" my thumb (feels like a little electrical buzz) when I do the first one, is that okay? It's not painful.
@muhammadhadjee5493
@muhammadhadjee5493 Жыл бұрын
Does this go if u do this on a daily basis
@selenab2531
@selenab2531 2 жыл бұрын
I think its the radial nerve, i can hardly rotate my hand backwards. I get a extremely sharp pain like a 9 out of 10. Is this nerve supposed to be this painful, almost pull out tears or profanity.
@IAMGOD200
@IAMGOD200 2 жыл бұрын
Did it get better ?
@omophagia
@omophagia 4 жыл бұрын
thanks for the video
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
You're welcome.
@davidgambrah10
@davidgambrah10 2 жыл бұрын
All I did was fall on the the ball tip of my thumb, and since then my hand has the tingly feeling. I can move all my fingers,wrist and hand fine just when I stretch my thumb back. I just want my thumb back to normal Simone help 😭
@joshmuz9018
@joshmuz9018 2 жыл бұрын
The ligaments are probably out of place and forming a new groove that are not quite correct. It's happened to my thumb and big toe from being hit directly on
@shellyvoss1041
@shellyvoss1041 Жыл бұрын
I fell off of a ladder 2.5 yrs ago and ended up with a “terrible triad” injury and a new radial head. After 3 mos of physical therapy a year ago, I still have a hard time putting all of my weight on that arm or even gripping things without sharp pain. In your experience, is it possible that nerve glide exercises can completely alleviate the nerve pain at some point? Thanks!
@AskDoctorJo
@AskDoctorJo Жыл бұрын
Unfortunately, that's a hard question to answer because it really depends on what is causing the nerve pain (damage, compression, scar tissue build up). It might be worth trying PT again, maybe with a different therapist to get some different ideas/treatment.
@JawadTaherpoor
@JawadTaherpoor 5 жыл бұрын
Hello Dr. Jo, THANK you very much for your videos. I have a seriously problem as the doctor damaged my Radial Nerve during the surgery OP of my hand which was broken from two spots (radius fracture elbow). Right after the surgery, I notice that I can NOT extend my finger and my wrist is in drop position but I can fully feel my fingers and skin. The ONLY problem that I have are my finger extension, my wrist in drop position with some pains. Can you please tell me if these exercises are good for my hand as well? What else would you recommend? Thank you very much for your help!
@AskDoctorJo
@AskDoctorJo 5 жыл бұрын
You're welcome! Unfortunately, I don't know what would be best for you since I can't evaluate you in person. The best thing to do would be to go see a physical therapist in person for treatment.
@affa8757
@affa8757 4 жыл бұрын
Jawad, how are your fingers and wrist doing now? I have the same, but not from a fracture but from pressure. I fall asleep in a weird position, the "saturday night palsy". I hope you're recovered
@premium6924
@premium6924 2 жыл бұрын
@@affa8757 hey, did you recover? Have same problem, no finger extension
@ben5526
@ben5526 3 жыл бұрын
I have a pinched nerve (radial, i think) coming from my neck, down right shoulder and going down to my thumb. Is it normal to do these exercises and it start tingling afterwards?
@IAMGOD200
@IAMGOD200 2 жыл бұрын
Hey I have the same just on my left side how it go for you ?
@bogdanmunteanu945
@bogdanmunteanu945 5 жыл бұрын
I want to know how long the radial nerve returns... please
@AskDoctorJo
@AskDoctorJo 5 жыл бұрын
It's different for everyone since it depends on your injury.
@bogdanmunteanu945
@bogdanmunteanu945 5 жыл бұрын
4-5 months?
@guybien4621
@guybien4621 4 жыл бұрын
Bogdan Munteanu are you better now?
@عبدالله-د3ش4ذ
@عبدالله-د3ش4ذ 6 жыл бұрын
I’ve lost your link to support your channel would you resend it
@AskDoctorJo
@AskDoctorJo 6 жыл бұрын
Sure: kzbin.info/www/bejne/qH6uY6ubYt11gJo Thanks.
@gregwarnick7730
@gregwarnick7730 3 жыл бұрын
Will using a flex bar (Tyler twist) help with RTS?
@MrApaHotel
@MrApaHotel 6 жыл бұрын
Need some help :-( Since 2-3 weeks ago I have lost a lot of strength in my triceps in my right arm and sometimes a bit of numbness/tingling in my index finger. I don't have pain. It tingles more if I bend my neck back. I think it could be a pinched nerve. Would these radial nerve glides together with stretching the neck be any use in healing?
@AskDoctorJo
@AskDoctorJo 6 жыл бұрын
They might help. These might also help: kzbin.info/www/bejne/nYu4f5acmMl7jZY
@elysiium3
@elysiium3 2 жыл бұрын
If the nerve irritation is focused on one part of my hand, should I still be doing these? All of the tightness and tingling is focused on the bottom knuckle of my index finger and the skin inbetween index and middle finger. On top of that, lightly brushing the top of my hand creates a lot of tingling and numbness. I know this was probably caused by excessive typing but I don't know how to fix it anymore..
@norkbork
@norkbork 9 ай бұрын
that’s ulnar nerve
@letmedream84
@letmedream84 2 жыл бұрын
Do you have an exercise with radial nerves in the legs? I feel like I'm sinking on the floor and having headache but not in my head but my back causes it. And my butt is tight... strange but yes
@AskDoctorJo
@AskDoctorJo 2 жыл бұрын
I have some videos for the sciatic nerve that starts in the back and goes down the leg. You can find them on my channel: kzbin.info
@idaraasuquo4930
@idaraasuquo4930 4 жыл бұрын
Thx
@AskDoctorJo
@AskDoctorJo 4 жыл бұрын
You're welcome.
@bslotay
@bslotay 3 жыл бұрын
L
@chefshit9271
@chefshit9271 2 жыл бұрын
I’m a bit worried about my numbness, I worked a 10 hour inventory shift at my job which involved a lot of crouching and scanning with my index finger. When I got home, I noticed the tip of my index finger as well as the tip of my big toe were slightly numb. I still have some sensation in the numb areas, but it’s definitely diminished. My finger and toe aren’t stiff, I can move them easily and without pain, but the numbness worries me. Do you think these exercises could help my situation? Or would it be worth seeing a specialist? Thank you
@AI-nt7th
@AI-nt7th 2 жыл бұрын
How many times a day should they be done?
Median Nerve Glides or Nerve Flossing - Ask Doctor Jo
6:01
AskDoctorJo
Рет қаралды 492 М.
Radial Tunnel Syndrome: Forearm pain from screwdriver motion
18:11
Holland Massage & Reflexology
Рет қаралды 271 М.
How it feels when u walk through first class
00:52
Adam W
Рет қаралды 25 МЛН
the balloon deflated while it was flying #tiktok
00:19
Анастасия Тарасова
Рет қаралды 25 МЛН
А что бы ты сделал? @LimbLossBoss
00:17
История одного вокалиста
Рет қаралды 11 МЛН
Я сделала самое маленькое в мире мороженое!
00:43
Radial Nerve Entrapment Release -  MSR Protocol - Part 4
4:29
Brian Abelson
Рет қаралды 91 М.
Radial Nerve Glides - Radial Nerve Flossing
4:39
Brian Abelson
Рет қаралды 401 М.
Wrist Tendonitis Treatment for Pain Relief - Ask Doctor Jo
12:27
AskDoctorJo
Рет қаралды 888 М.
Peripheral Nerve Sliders & Tensioners | Upper Limb Neurodynamics
4:57
Ulnar Nerve Glides - Ask Doctor Jo
5:04
AskDoctorJo
Рет қаралды 533 М.
How To Sleep with Neck Pain / Pinched Nerve in Neck | Dr. Jon Saunders
8:31
Ulnar Nerve Flossing - Amazing Results - Ask Dr. Abelson
6:11
Brian Abelson
Рет қаралды 1,6 МЛН
Help for Forearm Pain with Radial Nerve Glides
7:25
Virtual Hand Care
Рет қаралды 265 М.
How it feels when u walk through first class
00:52
Adam W
Рет қаралды 25 МЛН