1. Method: To extract adipose granule from bilateral thighs, afterwards, to inject the adipose granule to bilateral retromammary space.

2. Methods The needle was inserted from a point on upper anterior axillary line into retromammary space, then PAM-HG was injected.

3. Methods By using a long blunt needle puncture to locate the retromammary space and inject anaesthetic and polyacrylamide hydrogel at one point of breast.

4. Aim: To further explore breast fixtures and the shape and size of retromammary cellular space.

5. The surrounding breast ligament affected greatly the breast shape and the size of the retromammary cellular space.