He did 7.5 inches altogether using external tibias & femurs. I can't remember what happened exactly, be he had a lot of problems; last time I checked (which was years ago, tbf), he was still having trouble walking. The fact that he went with an Indian surgeon of questionable repute certainly didn't help things.
I don't know the surgeon or the case, but I can say this "doctor" is totally unstrustable and incompetent just by seeing the amount of atempted lengthening: 7,5 inches (furthermore within a single period, single osteotomy/surgery in each segment, and apparently also simultaneously in two segments??) seems fiction !!! Part of the responsibility is also of the patient, either by not being reasonable or by not having done enough research.
However, sadly for this man, this case shows that except unavoidable rare accidents like pulmonary thrombosis, probability of more severe consequences is diminuished simply by not attempting stupid targets.
It also demonstrates:
1) the huge importance of correctly evaluating (by all possible means) a good doctor: technique, experience, set up(or not) of a recovery/ physiotherapy team, etc, but also ethics. This may mean not choosing a "cheap" one, altough there are obviously excelent doctors in India, China, etc.
2) altough we CLLs candidates are not doctors, we should make our own research, including scientific, to be able to better make our choices and planning.