Why pectoral implants move: the mechanical problem at the centre of this procedure
The characteristic problem with pectoral implants is not a medical complication but a mechanical one: they move. The implant sits beneath a large, powerful muscle that contracts constantly, in a pocket created through an incision some distance away in the armpit, which makes precise control of its borders genuinely harder than in breast or facial implant surgery. Displacement, usually outward or downward, is the commonest reason for revision after this specific procedure.
Two things reduce this risk, and neither eliminates it entirely. A pocket deliberately limited at its borders, rather than made generously, and a genuine period of restricted upper body training while the capsule forms around the implant. Patients who return to heavy chest work at 3 weeks because they feel well are the ones who most often come back with an asymmetry, and it is worth asking your surgeon for a specific training timetable rather than accepting a general clearance to resume activity.