Topic: Question about X ray and ERC length difference (Read 456 times)

xua8 · « **on:** July 22, 2024, 03:02:33 AM »

Hello everyone,
I am currently on the fourteenth day of precice feumr extension in South Korea.
According to the length controlled by the ERC device (0.25cm * 4 for one day), it should have been extended by 1.3cm.
Today, I went to the hospital for a follow-up visit and the X-ray test showed that the extended length was 1.1cm.
Is this difference normal?
Is the actual length increase measured by X-ray or displayed by ERC?

ExploringLife · « **Reply #1 on:** July 22, 2024, 11:12:08 AM »

I do not know

but I asked chatgpt:
X-rays for bone length measurements typically have an accuracy within about 1% to 3% of the true length. This means that if a bone is 30 cm long, the measurement error could be about 0.3 cm to 0.9 cm.

Beemer m3 · « **Reply #2 on:** July 23, 2024, 07:05:58 AM »

i usually lengthen and assume im lengthening 1mm a day but when xray comes out its shorter when measured with a computer. so just wait for results i guess. i didnt do a machine lengthening so it can be different.

Limb Lengthening Forum

Author Topic: Question about X ray and ERC length difference (Read 456 times)

xua8

Question about X ray and ERC length difference

ExploringLife

Re: Question about X ray and ERC length difference

Beemer m3

Re: Question about X ray and ERC length difference