Minimum 10-Year Follow-Up of Anatomic Total Shoulder Arthroplasty and Ream-and-run Arthroplasty for Primary Glenohumeral Osteoarthritis.

Background: Reports on long term outcomes and failures of shoulder arthroplasty are uncommon. The purpose of this study is to present minimum 10-year outcomes in consecutive patients undergoing ream-and-run and anatomic total shoulder arthroplasty (TSA) for primary glenohumeral arthritis. Methods: This study analyzed consecutive patients who had undergone a ream-and-run or TSA with minimum 10-year follow-up. Pain scores and Simple Shoulder Test (SST) values were obtained preoperatively and at a minimum of 10 years postoperatively via e-mail or mail-in response. Percentage of maximum possible improvement (%MPI) was also calculated. Results: Of 127 eligible patients, 63 (50%) responded to a 10-year survey. This included 34 patients undergoing ream-and-run arthroplasty and 29 patients undergoing TSA. The ream-and-run patients were significantly younger than the TSA patients (60 +/- 7 vs. 68 +/- 8, P < .001), predominantly male (97% vs. 41%, P < .001), and had a lower American Society of Anesthesiologists classification (P = .018). In the ream-and-run group, the mean pain score improved from a preoperative value of 6.5 +/- 1.9 to 0.9 +/- 1.3 (P < .001), and the mean SST score improved from 5.4 +/- 2.4 to 10.3 +/- 2.1 at 10-year follow-up (P < .001). Twenty-eight (82%) achieved an SST improvement above the minimally clinically important difference (MCID) of 2.6. Four patients (12%) underwent single-stage exchange to another hemiarthroplasty, whereas 1 (3%) required manipulation under anesthesia. In the TSA group, the pain score improved from a preoperative value of 6.6 +/- 2.2 to 1.2 +/- 2.3 (P < .001), and the SST score improved from 3.8 +/- 2.6 to 8.9 +/- 2.6 at 10-year follow-up (P < .001). Of the 29 patients who underwent a TSA, 27 (93%) achieved an SST improvement above the MCID of 1.6. No patient in the TSA group required reoperation. Conclusion: Although the characteristics of the patients differ between the 2 groups, excellent functional results can be obtained with the ream-and-run arthroplasty and TSA for glenohumeral osteoarthritis.