Patent ID: 8608748

Claim:
A device for an orthopedic knee procedure for a specific patient comprising: a tibial drill guide having a body portion and first and second elongated posts extending away from and outside the body portion, the first and second posts defining corresponding first and second internal through bores with circular cross-sections for guiding a drill, the first post having a first circular cross-sectional shape and the second post having a second cross-sectional shape, the second post having an outer surface including an elongated cylindrical portion with a circular cross-section and an elongated prismatic portion with a rectangular cross-section extending radially from and attached to the cylindrical portion and forming a keyhole shape with the cylindrical portion, the second internal through bore passing through the elongated cylindrical portion of the second post; and a patient-specific alignment guide, the alignment guide including: a body with an inner anatomy-engaging surface shaped to conform and mate as a mirror surface of a corresponding knee joint surface of the patient; and a single guiding receptacle defining an inner channel sized and shaped to non-rotatably receive the second post of the drill guide, the inner channel having a cross-section with a circular portion and a rectangular portion communicating with the circular portion, wherein, when the alignment guide is mounted on the joint surface and the second post of the drill guide is received in the single guiding receptacle of the alignment guide, an exterior sidewall of the first post of the drill guide remains exposed and out of contact with the alignment guide and provides clearance for a tendon associated with the joint surface.