Abstract
The objectives of this study were to address the following questions regarding previous non-arthroplasty surgery prior to primary anatomic shoulder arthroplasty (either total shoulder arthroplasty [TSA] or ream-and-run arthroplasty): (1) To what degree is primary anatomic shoulder arthroplasty after prior non-arthroplasty surgery associated with inferior clinical outcomes and higher revision rates compared with arthroplasty without previous surgery? (2) Does type, approach, or timing of previous surgery affect outcomes after anatomic arthroplasty? A retrospective review of a primary shoulder arthroplasty database was performed and identified 640 patients undergoing anatomic shoulder arthroplasty (345 TSAs and 295 ream-and-run arthroplasties). Of these patients, 183 (29%) underwent previous non-arthroplasty surgery. Baseline and demographic information, 2-year postoperative outcome scores, and revision surgical procedures with associated culture results were collected. In patients undergoing TSA, previous non-arthroplasty surgery was associated with a significantly lower 2-year Simple Shoulder Test (SST) score(P = .010), percentage maximum possible improvement (MPI) (P = .024), and Single Assessment Numeric Evaluation (SANE) score(P < .001) and a higher rate of reoperation (P < .001). In patients undergoing ream-and-run arthroplasty, previous non-arthroplasty surgery was associated with a nonsignificantly lower 2-year SST score, percentage MPI, and SANE score and higher reoperation rate. Prior fracture surgery carried a higher risk of reoperation than other types of surgery including rotator cuff repair and instability surgery. Among TSA and ream-and-run arthroplasty cases with prior non-arthroplasty surgery, prior open surgery and the time interval from most recent surgery were associated with nonsignificant differences in the 2-year SST score, percentage MPI, SANE score, and revision risk. Previous surgery is associated with inferior clinical outcomes and higher revision rates in patients undergoing index TSA but not in those undergoing the ream-and-run procedure. Patients with previous fracture surgery carry the highest risk of reoperation.
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