The Sacramento Bee today reports on a new knee replacement system from OtisMed (Fremont, CA) that uses 3D imaging and computer software to achieve a level of customization not possible before. The technology aims to enable doctors to use more of the patient's own bone, and to shorten recovery times. The procedure begins with an MRI of the patient's knee. The software then takes the images and makes a three-dimensional model of the knee's bones and cartilege. Using that model, the surgeon discerns what areas must be strengthened. Plastic guides are used to tell the surgeon where to cut. This could be the most significant innovation in knee-replacement technology in 10 years.