Quote from: zack420 on February 22, 2018, 04:07:44 PMObviously technology has improved since then, that is why lengthening 10 cm to 14 cm is reasonable and safe. Why do you think Paley has the limits set to 8 cm femur and 6 cm tibia??
What technology are you talking about? The human body has mechanically stayed the same for like over 500,000 years now, probably more. No matter how good the technology of the actual procedure itself gets, it doesn't matter because you are always at the whims of the mechanical and physical limits of your body itself.
Take any mechanical model where weight is suspended by a rod, pole, etc.. and see how well it functions after you add or subtract even 1 or 2 inches. It can have massive impacts on the efficiency. Granted, the human body is much more resilient, adaptive, and can withstand amazingly harsh conditions (just look at these bodybuilder dudes on steroids for 20+ years like Rich Piana lifting 500lbs+ and putting their body under immense stress constantly, and even obese 300+lb people who manage to survive over 10 years like that). But it isn't ideal. You will face leg pain, back pain, possibly be in a wheelchair at old age, etc..
Also, the biggest technological advancements have been weight-bearing and internal methods... Which still frequently cause disunions and long-term complications, at least with what I've seen here reading journals.