The most common complication that can occur after breast implant surgery is capsular contracture. It occurs in 4-8% of operations. It leads to excessive formation of connective tissue around the implants and hardening of the breast. There is no health risk, but the pain and tenderness in the breasts can be uncomfortable. The shape of the breasts can also be altered by stiff connective tissue, pregnancy, breastfeeding, weight loss or age-related loosening of the connective tissue. In these cases, the implant can be replaced and the breast reshaped.