 Maxwell is credited with a significant advancement in the design of tissue expanders used for breast reconstruction by co-developing textured surfaces (to decrease capsular contracture) and helping to introduce prostheses which more closely resemble the shape and feel of the natural breast.The two-stage method of expander-implant reconstruction as described by Maxwell and Spears has become the most widely used technique for implant-based breast reconstruction.His work on concepts of matching implants and surgical techniques to individual soft-tissue characteristics in cosmetic and reconstructive breast surgery led to a method called the "biodimensional approach" which advanced dimensional analysis rather than volume when using breast implants and expanders.