Customized knee replacement India were introduced in Chennai by us. These save time in the OR. They also achieve optimal alignment of the prosthesis. Survival of the implants is increased with this technique. These blocks are designed for each individual patient. The design is based on x rays and MRI scans of the knee. Measurements obtained from these scans are incorporated into dedicated cutting blocks by CAD engineers. It takes four weeks for the process. There is an added cost for pre operative scans and manufacture of the cutting blocks.