While total shoulder arthroplasty is a beneficial treatment of degenerative conditions of the glenohumeral joint, its long-term effectiveness suffers from a substantial failure rate, most frequently caused by glenoid component loosening, fragmentation, and wear. The limited longevity of prosthetic glenoid components is a particular concern for those patients who are young and those who wish to continue in physically demanding activities following glenohumeral arthroplasty. The non-prosthetic glenoid arthroplasty technique described in this article can restore the smoothness, shape, and orientation of the glenoid surface through spherical reaming of its surface. The reamed glenoid concavity is paired with the near-matching convexity of a proximal humeral prosthesis. Patients are allowed to return to their previous level of activity.