Customized Resurfacing of the Knee: Design of the Shell Knee Replacement

Current total knee replacements have been successful in relieving the pain associated with arthritis, as well as increasing patient mobility and allowing them to partake in sports activities to a limited degree. In the elderly patient group, the ten-year survivorship has been as high as 95%. Approximately, one-third of the patients who are candidates for total knee replacement fall into the younger patient group category. In this group, where life expectancy can exceed 20 years[1], the survivorship of a TKR is limited. This becomes an important issue since one or more revision surgeries may be necessary. As a result, the chances of infection, pain associated with surgery and rehabilitation, and loss of viable bone are increased. Achieving a high degree of mobility is also a priority for this group since they tend to lead a more active lifestyle.