It is an invasive surgery.
Especially when we talk about internals it is almost as invasive as it could get for an orthopaedic surgery and even more for a cosmetic one.
i just wanna correct you here, because your statement dosnt sit right with me
technically all surgeries are "invasive"
however, the techniques used in LL would be considered minimally invasive.
this is becuase it means its not an OPEN surgery
minimally invasive just means smaller incisions as opposed to a large incision used in open approach.
even in a tibial LL procedure. while the nailing can go through the patella, it doesnt involve opening the the joint.
i would argue that abdominal plasties and BBLL's are for more invasive.