Surgical guide

A surgical guide adapted to receive and guide a surgical instrument for performing a bone osteotomy in a canine tibial tuberosity advancement (TTA) procedure, the surgical guide comprising:

• a body formed as an irregular polyhedral block, the irregular polyhedral block further comprising:
• an elongate cutting channel extending in a straight line longitudinally along at least a portion of a length of the user-facing surface between a first end and a second end and extending through the irregular polyhedral block from the user-facing surface to the opposing bone-facing surface, the elongate cutting channel having a discrete length such that the elongate cutting channel is bounded by the irregular polyhedral block through which it extends;
• a first fixation aperture extending through a portion of the irregular polyhedral block from a user-facing surface to an opposing bone-facing surface, the first fixation aperture configured to receive a primary fixation device on a first angle;
• a second fixation aperture extending through a portion of the irregular polyhedral block from the user-facing surface to the opposing bone-facing surface, the second fixation aperture configured to receive a secondary fixation device on a second angle oblique to the first angle, wherein the second fixation aperture is located on a first lateral side of the cutting channel;
• at least two positioning apertures extending through a portion of the irregular polyhedral block from the user-facing surface to the opposing bone-facing surface, the at least two positioning apertures configured to receive one or more positioning devices configured to, when received, abut an anterior edge of a tibial bone surface;
• wherein the at least two positioning apertures comprise a first positioning aperture and a second positioning aperture, each located on an opposing lateral side of the elongate cutting channel from the second fixation aperture and spaced apart from the longitudinal axis of the cutting channel;
• wherein the first positioning aperture is located substantially perpendicular to a mid-portion of the elongate cutting channel positioned between the first end and the second end, and the second positioning aperture is located substantially perpendicular to the second end of the elongate cutting channel;
• wherein a substantially perpendicular distance of the first positioning aperture from the longitudinal axis of the elongate cutting channel is greater than a second substantially perpendicular distance of the second positioning aperture from the elongate cutting channel.