Evergreen Orthopedic Research Lab
Research and Education
Computer Navigation and The Matrix Method©
The MIS Method
In the MIS technique, modified retractors, down-sized instruments, and an altered sequence of osteotomies allow total knee replacement without eversion of the extensor mechanism.
Specialized Matrix© Retractors have been designed and shaped to eliminate abrupt margins and optimize exposure without obstructing visualization. These retractors must be placed strategically and used dynamically to optimize visualization and protect the MCL, PCL, and LCL. The assistant uses them to relax one side of a mobile soft-tissue window while maximizing exposure on the other side. This method decreases the need for more extensile soft tissue dissections without sacrificing exposure.
Ongoing Research Projects and Publications
Computer navigation eliminates the need for an IM rod, decreases blood loss, and decreases the potential for fat emboli. Computer navigation also decreases the need for exposure, and greatly facilitates MIS surgical techniques.
The Matrix© System combined with the Triathlon MIS instruments allows the orthopedic surgeon to comfortably introduce MIS surgical techniques and navigation in an intuitive, incremental, efficient, and safe manner.