Patient-specific augmented glenoid systems

Abstract

A glenoid implant comprises a body comprising: an articular surface and a scapula-engaging surface, the scapula-engaging surface including first and second portions angled relative to each other; anda fixation feature extending from the scapula-engaging surface. A method comprises: forming a planar bone surface at a glenoid using a guide pin; forming a first bore into the glenoid located near theguide pin; forming a second bore into the glenoid offset from the first bore; inserting an augment ream guide into the first and second bores; and forming an angled bone surface at the glenoid relative to the planar bone surface using the augment ream guide. A ream guide comprises: a base having first and second surfaces; a bone peg extending from the first surface; an alignment peg spaced from the bone peg; and a guide peg extending from the second surface at an oblique angle to the bone peg.

Description

[0001] claim priority [0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 152,304, filed April 24, 2015, by Kovacs et al., entitled "PATIENTSPECIFIC AUGMENTED GLENOID PREP," which The entire contents of the US Provisional Patent Application are incorporated herein by reference. technical field [0003] This document relates generally, but without limitation, to systems and methods of preparing bone for orthopedic implants. More specifically, the present disclosure relates to, but is not limited to, preparing bone surfaces to receive orthopedic implants having asymmetric bone-engaging surfaces. Background technique [0004] In cases of severe glenoid wear, it may be difficult to return the joint to a near-neutral state using standard implants. In these cases, the surgeon must make compromises: place components at non-ideal torsion angles, remove substantial native bone to obtain complete dorsal coverage of the glenoid base, or perf...

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Problems solved by technology

However, many of these designs still require substantial bone removal

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