Customized patient-specific acetabular orthopaedic surgical instrument and method of use and fabrication

A method of using a customized patient-specific acetabular reaming guide to perform an orthopaedic bone reaming procedure on a patient's acetabulum to facilitate implantation of an acetabular cup prosthesis in a coxal bone of the patient, the method comprising:

• positioning a guide body of the customized patient-specific acetabular reaming guide such that a customized patient-specific negative contour defined in a bone-facing surface of the guide body receives a corresponding positive contour of the patient's coxal bone, the guide body having a cylindrical passageway that defines a longitudinal axis oriented relative to the bone-facing surface based on a predetermined version angle and a predetermined inclination angle of the acetabular cup prosthesis when implanted in the patient's coxal bone,
• securing a guide housing of the customized patient-specific acetabular reaming guide to the guide body,
• advancing an acetabular reamer surgical tool along the longitudinal axis into the patient's acetabulum, and
• reaming the patient's acetabulum using the cylindrical passageway of the guide body and the guide housing as guides for the acetabular reamer surgical tool.