As an individual who has done it, I woud always say no to external femurs Lon, latn, with monorails or cages. No, never please.
I seem very happy with my new height, i have changed and everything, yes. But who would believe when i tell them never do it if they ask me for advise on wanting to follow my path. ..because i still feel like suicide on somedays.
External femur is a very very hard battle in which kill or be killed. Conquer all severe pain and battle over joint stiffness each and everyday. Worries, frustrations and depressions beat you up. Unless you have all the courage and strongest mind i bet its impossibe to survive this battle.
And even if u overcome the battle, stiff joints and really nasty scars may still haunt you. Im in that state , two months post nail exchange with latn and i still dont know how long would i need to bear with it.
I m a very happy and boho type of girl with very very strong will and motivations so i always find out ways to overcome my depression and frustrations yets there are still days which i cry my heart out and feel like suicide. The only thing that got me going is that 8cms whch i wanted soooo much and even my doctor commanded me and seriously wanted me to stop at 6 to 7 cms, i cried to him stating it is my decision and i promised him over and over again i would never give up and work really hard for full recovery until he let me. Including my doctor is a very good person who let me have no complications and always aware of them. Always had been supportive and be there for me even out of hs working hours.
Maybe that 8 cms is a contribution to my current state, i dont know. My starting height was pretty bad plus my femurs were unproportionally short compared to my tibs. And that 8cms did a really big change to me physically and mentally too. So all the people out there wanting external femurs just decide for urself upon my journey. Once u conquer everything thats it for you. Nothing can drag u down again physically or mentally. You' ll be a much taller, stronger minded person. But there is just very lil chance for u to win if u do more than 5 cms. Good luck everyone.