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[Essurfer8]

For those who have had surgery. Does anyone’s precice nail a gear grinding or skipping noise when lengthening? Similar to a clutch slipping in a manual car. Mine suddenly started around the 18mm mark..

[trademitech]

I remember mine grinding and then it even made a crazy popping noise when I was lengthening. I always had a lingering fear it was going to dysfunction. You’re fine though. I spoke to the rep from nuvasive and they said that is pretty standard.

[Essurfer8]

Ahh okay. I appreciate the reassurance. Its just psychologically unnerving.. How long did yours last? And did it go away?

[Hagane]

just in case i would take a video and send it to your nuvasive rep. they should know the machine better than anyone else

[hippo60]

Pretty sure I experienced it as well and just like you freaked out over this. My doc (Rozbruch) said it's fine and continue lengthening. In my case it happened mostly in the beginning (first 1-2 weeks), and a lot more in my right leg compared to left. As I approached 8cm, it started happening again, and again was told not to worry.

[trademitech]

Ahh okay. I appreciate the reassurance. Its just psychologically unnerving.. How long did yours last? And did it go away?

My girlfriend was sitting with me during one of the major ‘popping’ sounds that the machine made. She winced and made a face and asked me if I was okay. I had this lingering fear that the rod would malfunction and spring to the max length inside my legs lol.

Honestly man, this is pretty standard. It doesn’t go away, you’ll keep getting the grinding throughout the course of lengthening.   sucks man, but as I tell other LL’ers - take it 1MM at a time.

[Vx88x]

My girlfriend was sitting with me during one of the major ‘popping’ sounds that the machine made. She winced and made a face and asked me if I was okay. I had this lingering fear that the rod would malfunction and spring to the max length inside my legs lol.

Honestly man, this is pretty standard. It doesn’t go away, you’ll keep getting the grinding throughout the course of lengthening.   sucks man, but as I tell other LL’ers - take it 1MM at a time.

I had this exact fear when my machine was making grinding noises! hahah

[Vx88x]

Pretty sure I experienced it as well and just like you freaked out over this. My doc (Rozbruch) said it's fine and continue lengthening. In my case it happened mostly in the beginning (first 1-2 weeks), and a lot more in my right leg compared to left. As I approached 8cm, it started happening again, and again was told not to worry.

I wonder what it is and why it happens at different lengths. Glad yours wasn't an issue!

[hippo60]

I wonder what it is and why it happens at different lengths. Glad yours wasn't an issue!

Same. At first I reached out to the NuVasive guy, who was very careful not to give any "medical advice" and told me to reach out to my doctor. I found it very strange that the person representing the company building the nail & device arguing my doctor should know more about it than them. I believe he also send it within NuVasive but never heard anything back.

I found the whole thing very strange, but was happy that Rozbruch did experience it in the past and wasn't worried.

[sphenopetroclival]

I remember mine grinding and then it even made a crazy popping noise when I was lengthening. I always had a lingering fear it was going to dysfunction. You’re fine though. I spoke to the rep from nuvasive and they said that is pretty standard.

Yes; given the nature of the gear mechanism one would expect to experience these phenomena. Particularly near the end of the distraction phase. Nothing to worry about~

[jerrytheman]

mine is not the ERC, but my nail in my leg makes weird noises in the lats 2mm of the 80mm journey. And the ERC usually jerks a bit while lengthening, I have noticed it stopped doing that in the last 3-4mm for me.

[GrowGrow123]

For those who have had surgery. Does anyone’s precice nail a gear grinding or skipping noise when lengthening? Similar to a clutch slipping in a manual car. Mine suddenly started around the 18mm mark..

Yep, this happened to me too on my right leg about a third of the way through the lengthening process. The x-rays confirmed it to be signs of early consolidation. My doctor had me stop taking calcium and D3 supplements and speed up the lengthening on the right leg. It kept making those grinding / gear noises but I was able to complete the full 8cm.

When I asked the Nuvasive rep, he didn’t know what it was and thought nothing was wrong ¯\_(ツ)_/¯ . So I wouldn’t take what they say as truth.

In my case, if I lengthened 10 millimeters on the leg that was making noises, the actual amount lengthened was only like 6-7.

I’ll also say that my left leg only made those grinding / gear noises at the very very end when lengthening was finished. In other words, you’ll hear that noise either if you’re done lengthening or if soft tissues are creating resistance.

[jerrytheman]

I highly doubt it's noise from body resistance. It's the nail for sure. It's metal twisting at a lot of rounds per minute. My nuvaive rep says that sometimes they make these noise towards the end and nothing to be alaramed about as long as nothing hurts.

I freaked out cause I felt vibrations, like when your phone rings on vibrate. But he told me to continue as normal.

[GrowGrow123]

I highly doubt it's noise from body resistance. It's the nail for sure. It's metal twisting at a lot of rounds per minute. My nuvaive rep says that sometimes they make these noise towards the end and nothing to be alaramed about as long as nothing hurts.

I freaked out cause I felt vibrations, like when your phone rings on vibrate. But he told me to continue as normal.

Same. But I heard the noises on the right leg pretty early on. 5 days after hearing the noises for the first time was my normally scheduled x-ray. Doctor tells me I have signs of early consolidation on the right leg (before I had mentioned anything about the noises on the ERC machine). The X-rays consistently showed my leg with way more callous and soft tissue on the right leg throughout the process. Only ever heard noises on the ERC when lengthening the right leg.

The noise does come from the nail. From the nail struggling to lengthen as it hits resistance. Or at least that’s my theory based on what happened. As long as the amount lengthened (from X-Rays) is the same as what the ERC machine shows, it’s not an issue obviously.

[jerrytheman]

I kept lengthening with weird noises. But in the middle of my second to last lengthening cycle, I heard a loud pop from inside where my bone is. And immediately took the ERC off my leg. Not sure if it is too consolidated, or just because nail reached end capacity. But with around 0.4mm away from the full 80mm, I've just decided to start the consolidation phase. I highly doubt 0.4mm will make any difference in my life.