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Anyone have any success going above 8cm in Femur with Precise?

Z
zoldyck
Member
Posts: 335
Joined: Oct 2025
Posted on Oct 15, 2025, 12:59 pm
#1
Looking into getting Precise 2.2 (bilateral femurs). Currently around 170.25cm.

I know the limit is 8cm, with 1mm a day distraction over 80 days for the full amount if recovery goes well.

My question is, has anyone ever attempted asking their doctor to go above 8cm with clearance, and did you succeed? Or is that pretty much out of the question in one go?
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A
account03
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Posts: 244
Joined: Apr 2022
Posted on Oct 17, 2025, 5:00 am
#2
as far as i'm aware the nail literally wont go that long. the limit is 8.3cm afaik
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Z
zoldyck
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Posts: 254
Joined: Oct 2025
Posted on Oct 17, 2025, 10:45 pm
#3
Quote from: oklama on October 17, 2025, 05:00:52 AMas far as i'm aware the nail literally wont go that long. the limit is 8.3cm afaik

That makes sense, I didn't consider the nail itself had limitations. I just know the external fixator ones can go up to 4inches (~10cm) but that's probably because those having more weight baring.
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account03
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Posts: 377
Joined: Apr 2022
Posted on Oct 18, 2025, 2:52 pm
#4
Quote from: zoldyck on October 17, 2025, 10:45:09 PMThat makes sense, I didn't consider the nail itself had limitations. I just know the external fixator ones can go up to 4inches (~10cm) but that's probably because those having more weight baring.

even the previously released weight bearing models had the same limit, not sure why they do it, maybe cheaper manufacturing and they dont think you'll ever need to go above 8 for an orthopedic purpose.

Betzbone I know can go much higher and people claim to have gotten good results however dr. Becker and betz before him seem to allow too much lengthening for me to feel comfortable, also the lengthening mechanism for the nail is supposedly really painful. I doubt it's unsafe in itself but I would just do precice 2.2. going over 8cm in one segment without balancing the other probably will start to look bad. With precice rebreak is always an option
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Z
zoldyck
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Posts: 159
Joined: Oct 2025
Posted on Oct 18, 2025, 4:39 pm
#5
Quote from: oklama on October 18, 2025, 02:52:26 PMeven the previously released weight bearing models had the same limit, not sure why they do it, maybe cheaper manufacturing and they dont think you'll ever need to go above 8 for an orthopedic purpose.

Betzbone I know can go much higher and people claim to have gotten good results however dr. Becker and betz before him seem to allow too much lengthening for me to feel comfortable, also the lengthening mechanism for the nail is supposedly really painful. I doubt it's unsafe in itself but I would just do precice 2.2. going over 8cm in one segment without balancing the other probably will start to look bad. With precice rebreak is always an option

Got it. That makes sense.

I'm currently ~170.18 - 170.85cm or so. I figured if I could get to 178 I'd already be happy, but if I could push it to ~180-181cm in one go that would be fantastic so i'd never have to do it again.

Sounds like it would be impossible with the limitation. Oh well, I'll take 178cm any day and precise 2.2 is the best current option I got.
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