How is breast implant placement chosen: under or over the muscle?

Implant placement is chosen individually. The decision depends on the amount of natural breast tissue, skin thickness, chest-muscle anatomy, implant size and shape, activity level, and the desired contour.

Placement partly under the chest muscle can provide additional soft-tissue coverage and may reduce visible edges or rippling in thinner patients. It can involve more early discomfort and may cause the breast shape to move when the chest muscle contracts.

Placement over the muscle can avoid muscle-related movement and may have a shorter early recovery, but it requires adequate tissue coverage and may make implant edges or rippling more noticeable in some patients. There is no single best position for everyone; the surgeon will explain which option fits your anatomy and priorities.

2026-08-10T02:05:03+09:00

About the Author: Francis Jeon

Dr. Francis Jeon, MD is a board-certified thoracic and cardiovascular surgeon and the founder of Evita Clinic in Seoul, South Korea. For nearly two decades, he has specialized exclusively in body contouring surgery, with particular expertise in gynecomastia surgery, gender-affirming top surgery, breast reduction, and liposuction. His practice serves both Korean and international patients seeking individualized surgical care. Drawing on extensive operative experience, Dr. Jeon is known for his meticulous surgical technique, safety-first philosophy, and evidence-based approach to body contouring. His philosophy is simple: successful body contouring begins with understanding why the body changes—not simply how to remove fat. Through his Medical Insights articles, he shares practical clinical knowledge to help patients better understand the science behind body contouring, empowering them to make informed decisions about their treatment.