Wartenberg's Sign - Ulnar Nerve Injury

Cool video! I'm a hand therapist so I see this often, but the clinical presentation of your old ulnar nerve laceration many years ago is interesting. You clearly see the atrophy to the 1st dorsal interrosei and the hypothenar emminence and the lack of palmar and dorsal interrosei function in between the metacarpals of your medial 2 digits, but curious as to why you still have function of the rest of the interrosei as you approach the lateral digits! You'd expect weakness or paralysis of all the interossei due to the deep branch of the ulnar nerve innervating them all equally. A key pinch must be difficult though because of weakness of adductor pollicis and the 1st dorsal interrosei. Couldn't really tell from this video if you were presenting with a very mild claw hand either, but honestly your ability to straighten your hand out completely looks great from what I can see! You'd expect more severe MCP hyperextension (because loss of intrinsics- lumbricals and interrosei- to counterbalance the hyperextension torque produced by the extrinsic extensors) and flexion at the PIPJ due to a loss of intrinsic function to counterbalance the pull of the extrinsic flexors- FDP and FDS.

wow! what a live case! Thanks.

Great video

Never noticed that on you Paul and I've know you since like for ever

Clear demonstration, thank you

I have had the same problem recently together with a lot of left handed weakness....I've no prior hand / arm injury but I did have really bad whiplash injuries 18 years ago that left me with prolapsed cervical discs.

Can you do a video on posterior interosseous nerve palsy? There are few videos on the topic and I’m fairly confident I have it. Very limited movement in my thumb and fingers, but no wrist drop. Thank you!

How to improve Wartenberg’s sign?

I have this, but can't think of any injury that would have caused it. What are some remedies?

Hey! I had a similar accident on the exact same part of my wrist when I was 4. My symptoms are the same as yours. Since then I have severe pain on my wrist but I was to scared to see a doctor cause I don't like being touch there. But now I made a doctor's appointment and I don't know what to expect. The accident was 20 years ago. Do I have a chance to recover and is a surgery necessary to get rid of the pain? I'm so scared and I would like to be prepared. How did you handle it? 😅

I'm having this right now and I'm so worried about ALS

How come no evidence of clawing? Is it due to different area of the nerve being damaged?

Is there a way to fix this?