Generally speaking, when a foreign body (such as a silicone prosthesis) enters the body, the immune cells in the body will recognize the foreign body, and then form a thin connective tissue membrane around the foreign body to separate the foreign body from the body tissue. This is a capsule.

After augmentation rhinoplasty with L-shaped silicone prosthesis, fibrous tissue capsule is formed on the surface, which is thickened and tightened continuously, and the pulling nose tip is shorter and shorter, that is, capsule contracture. If capsule spasm occurs, the prosthesis will be deformed and it is easy to appear celestial phenomena.

Too many times of rhinoplasty will lead to an increase in internal scars and contracture, which will also form a "nose facing the sky" visually.

Cartilage lengthens the columella of nose, which is absorbed seriously in the later stage, resulting in a shortened nose that looks like contracture.