Capsule contracture, is indeed the most common complication of breast augmentation
surgery. It can happen at any time, but seems to be more common in the first several months after surgery. The cause for capsule contracture are still not clear. A higher risk of occurs if there is transient germ contamination, subglandular placement, infection, seroma, hematoma, and smoking. http://www.justbreastimplants.com/risks/capsule-contracture.