Yeah, of course the doctors won't "highlight" the leg lengthening surgery complications for you as they don't want you to worry too much. And although they're pretty rare, they can occur. Things like...
- Non-union (aka: bone heals too slow or not at all)
- Premature Consolidation (aka: bone heals too fast)
- Thrombosis (aka: blood clot that could dislodge and cause embolisms)
- Fat embolisms
- Hardware Malfunction (aka: broken rod or screws)
- Infection (aka: bacteria that gets into incision sites...keep it clean!)
- Nerve damage (loss of sensation)
- Loss of Flexibility & ROM (do your therapy or might lose it for good)
If you want to watch the video version you can see it here: https://youtu.be/FfBgIDkRtNU