Patent ID: 9579106
Date: 2017-02-28
CPC Classifications: A61B

Claim:
1. A patient specific surgical instrument for positioning the glenoid component of a shoulder implant said glenoid component having a keel or a plug component for fixing the glenoid component, a joint including a diseased native glenoid articular joint surface and an adjacent anterior glenoid fossa, said instrument comprising: an instrument body fabricated specifically to have a patient derived surface computed from image data of said diseased native glenoid articular joint surface creating a negative surface such that said instrument body has a surface that approximately matches and conforms to said diseased native glenoid joint surface; an index feature formed in the periphery of said instrument body and directly adjacent and contiguous with said instrument body, said index feature fabricated specifically to have a patient derived surface for engaging a portion of said adjacent anterior glenoid fossa, to position and locate said instrument body patient derived surface on said diseased native glenoid joint anatomy; at least one cutting guide through said instrument body to locate and direct cutting tools for aligning the keel or the plug component of the glenoid component for use in total shoulder arthroplasty in a pre-operatively planned orientation is less than or equal to 0° of version.