Quote from: WannaBeTaller-Official on August 26, 2023, 12:36:36 AM
I will forward your measurements and comments to the relevant personnel/unit and I will share their explanation here. However, as I said, we do not use the amount of elongation as an "obvious" advertising factor. If I see that your explanations make more sense, not the relevant personnel/unit's, I will not hesitate to make corrections here.
"When evaluating the success of limb lengthening surgery, precise measurements of the gained height increase are important. However, due to various factors, achieving a perfectly consistent measurement across all assessments can be challenging. One of the key factors contributing to this variability is the selection of reference points for measurement.
Reference points serve as the basis for measuring the increase in limb length accurately. These points are used to establish a consistent starting and ending position for each measurement. However, because reference points are often anatomical landmarks, their identification might not always be as straightforward as one would hope. Variability can arise due to individual differences in anatomy, surgeon interpretation, and the effects of the surgical procedure itself. Consequently, a small but consistent discrepancy in reference point placement can lead to minute variations in the recorded height increase after each measurement.
Surgeons and medical professionals often use the standard deviation to assess the precision and reliability of the measurements taken during limb lengthening. A higher standard deviation can be an indicator that the measurements might be influenced by factors such as inconsistent reference point placement or other sources of error. Conversely, a lower standard deviation indicates that the measurements are relatively consistent and reliable, enhancing the confidence in the accuracy of the reported height increase." This is the information given to me by the doctor's assistant. I conveyed as much as I could understand from what she told me.
As much as I understand from what you, and she, said, correcting the image for magnification seems to be one of the possible reasons for deviation too. If I misunderstood, please correct it. If you have suggestions that can reduce the standard deviation in the measurements, be sure that I will transfer them to the relevant personnel/unit with my pleasure.
As I mentioned before, The company's policy is "Less risky less cm is better than more risky more cm." and we are already very modest about lengthening rates:
Optimum rate: 6 cm
If a good preliminary preparation is made / the patient's physiology is suitable / the patient is tenacious in physiotherapy: 7-8 cm.
Therefore, I see no reason to think that there is a tendency to deliberately exaggerate the patient's height gained at the end of the process through measurements. In my opinion, the best way to measure a patient's height gain in the simplest and most concrete way is still a good quality physical height meter/ruler. I recommend that our patients accept the measurement they make with such a height meter/ruler as final.
LON on Femur - 9cm goal height
Quote from: WannaBeTaller-Official on August 31, 2023, 03:01:17 AM"When evaluating the success of limb lengthening surgery, precise measurements of the gained height increase are important. However, due to various factors, achieving a perfectly consistent measurement across all assessments can be challenging. One of the key factors contributing to this variability is the selection of reference points for measurement.
Reference points serve as the basis for measuring the increase in limb length accurately. These points are used to establish a consistent starting and ending position for each measurement. However, because reference points are often anatomical landmarks, their identification might not always be as straightforward as one would hope. Variability can arise due to individual differences in anatomy, surgeon interpretation, and the effects of the surgical procedure itself. Consequently, a small but consistent discrepancy in reference point placement can lead to minute variations in the recorded height increase after each measurement.
Surgeons and medical professionals often use the standard deviation to assess the precision and reliability of the measurements taken during limb lengthening. A higher standard deviation can be an indicator that the measurements might be influenced by factors such as inconsistent reference point placement or other sources of error. Conversely, a lower standard deviation indicates that the measurements are relatively consistent and reliable, enhancing the confidence in the accuracy of the reported height increase." This is the information given to me by the doctor's assistant. I conveyed as much as I could understand from what she told me.
As much as I understand from what you, and she, said, correcting the image for magnification seems to be one of the possible reasons for deviation too. If I misunderstood, please correct it. If you have suggestions that can reduce the standard deviation in the measurements, be sure that I will transfer them to the relevant personnel/unit with my pleasure.
As I mentioned before, The company's policy is "Less risky less cm is better than more risky more cm." and we are already very modest about lengthening rates:
Optimum rate: 6 cm
If a good preliminary preparation is made / the patient's physiology is suitable / the patient is tenacious in physiotherapy: 7-8 cm.
Therefore, I see no reason to think that there is a tendency to deliberately exaggerate the patient's height gained at the end of the process through measurements. In my opinion, the best way to measure a patient's height gain in the simplest and most concrete way is still a good quality physical height meter/ruler. I recommend that our patients accept the measurement they make with such a height meter/ruler as final.
Your response is quite lengthy, but in the end, I interpret that there is no magnification correction being applied to the X-ray images at WBT.
Therefore, until OP can fully stand upright and a height measurement is taken, we cannot definitively say whether the femur has truly lengthened by 9 cm.
While it's a fact that errors can occur even when using nail or calibration ball for magnification correction, it's still better than not doing any correction at all.
However, the magnification rate of X-ray images is only a few percent, so I consider it reliable to think that the OP's femur has indeed lengthened by more than 8 cm.
It looks like op might be missing 1cm or 2cm deviation. What could be the cause
Quote from: mate10000w on August 31, 2023, 06:56:41 AMIt looks like op might be missing 1cm or 2cm deviation. What could be the cause
Just lordosis and general difficulty fully straightening my knees and keeping good posture. It gets a little better each day though. Hopefully in another month I’ll be able to get a more accurate measurement of my height. I firmly believe I got the full 9cm because right now I’m definitely losing at least 1 to maybe even 2 centimeters due to poor posture.
At max you did 6 if lucky 7cm in length. There’s no way it’s a full 9cm
Maybe you got 6 but your eyes saw it as 9. We're you hanging upside down when reading your xrays
Quote from: nerdalocs on September 01, 2023, 05:27:15 PMAt max you did 6 if lucky 7cm in length. There’s no way it’s a full 9cm
Cope
Jokes aside, there’s a dude over here doing over 12cm with betz, why is 9cm so hard to believe, especially after I posted numerous x-rays
Quote from: Stubborn Knucklehead on September 01, 2023, 06:01:30 PMJokes aside, there’s a dude over here doing over 12cm with betz, why is 9cm so hard to believe, especially after I posted numerous x-rays
Yah, weird to me. I was there when you were doing the extra cm from 8 to 9, so can confirm, and you went through a serious amount of pain to get that extra centimeter. It probably is mostly an issue with posture and your knees having a bend, even when standing. You were decently taller than me than when I left and I know for a fact I was hovering around 169.5-170, since I measured it multiple times both at the clinic there and after returning home to Canada.
Just remember you made it son.
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