He is a fellowship trained joint specialist and has been practicing minimally invasive surgery since 1991. Dr. Mixa has completed over 3000 joint replacements and is able to do total joint surgery in approximately 50 minutes, therefore minimizing the risk for infections and blood clots. Dr. Mixa has had no infections in over 3,000 joint replacements and 0.5% blood clots, compared to national average of 12%.