Apparatus and method for creating a dome tibial osteotomy

摘要

An instrument system and a method for creating a dome osteotomy having a semi-cylindrical surface contour configuration with an arcuate profile configuration at a selected location on a proximal tibia utilize a first guide component having a plurality of apertures placed along an arc which follows the arcuate profile configuration of the dome osteotomy and a cannula received in each aperture for establishing an array of parallel drill holes forming a pattern for the surface contour configuration of the dome osteotomy. A second guide component includes a slot which follows the arcuate profile configuration of the dome osteotomy and which is juxtaposed with the array of drill holes to guide osteotomes along the slot and into the tibia to create the surface contour configuration of the dome osteotomy. The osteotomes have a lateral curved configuration for following the arcuate profile configuration and footed osteotomes are used to reach behind the patellar tendon for completing the full dome osteotomy.