How much will my posture improve after my breast reduction? (Photo)

Although an exam is necessary, from your photo and description it appears that you have a collection of fat in the upper mid line of your back. This is also called a "buffalo hump" and is not related to large breasts by themselves. It is often seen in those that use steroids, have an adrenal or other endocrine imbalance, or often without explanation.It will not improve by breast reduction alone. It can easily be reduced by liposuction but the cause should first be identified.

The hump on your back could be either from curvature of the thoracic spinner from fat accumultion.  If it is fat accumulation , then liposuction might be of some benefit.  If it is spine curvature, a breast reduction would help in preventing it from worsening so could be of considerable benefit.

This hump is probably unrelated to your breast issue. However, most of my patients do experience an improvement in their posture after breast reduction surgery.