Impact of Surgeon Volume, Experience, and Training on Outcomes After Arthroscopic Rotator Cuff Repair: A Nationwide Analysis of 1,489 surgeons

Background Given the complexity of arthroscopic rotator cuff repair (ARCR) and increasing prevalence, there is a need for comprehensive, large-scale studies that investigate potential correlations between surgeon-specific factors and postoperative outcomes after ARCR. This study examines how surgeon-specific factors including case volume, career length, fellowship training, practice setting, and regional practice impact two-year reoperation rates, conversion to total shoulder arthroplasty (anatomic or reverse) (TSA), and 90-day post-ARCR hospitalization. Methods The PearlDiver Mariner Database was used to collect surgeon-specific variables and query patients who underwent ARCR from 2015 to 2018. Patient outcomes were tracked for two years, including reoperations, hospitalizations, and ICD-10 codes for revision rotator cuff repair (RCR) laterality. Hospitalizations were defined as any emergency department (ED) visit or hospital readmission within 90 days after primary ARCR. Surgeon-specific factors including surgeon case volume, career length, fellowship training, practice setting, and regional practice were analyzed in relation to postoperative outcomes using both univariate and multivariate logistic regression. Results 94,150 patients underwent ARCR by 1,489 surgeons. On multivariate analysis, high volume surgeons demonstrated a higher risk for two-year total reoperation (OR = 1.06, 95% CI: 1.01-1.12, P = 0.03) and revision RCR (OR = 1.06, 95% CI: 1.01-1.12, P = 0.02) compared to low volume surgeons. Early-career surgeons showed higher rates of 90-day ED visits (mid-career surgeons: OR = 0.78, 95% CI: 0.73-0.83, P < 0.001; late-career surgeons: OR = 0.73, 95% CI: 0.68-0.78, P < 0.001) and hospital readmission (mid-career surgeons: OR = 0.74, 95% CI: 0.63-0.87, P < 0.001; late-career surgeons: OR = 0.73, 95% CI: 0.61-0.88, P = 0.006) compared to mid- and late-career surgeons. Sports Medicine and/or Shoulder and Elbow fellowship-trained surgeons demonstrated lower two-year reoperation risk (OR = 0.95, CI: 0.91-0.99, P = 0.04) and fewer 90-day ED visits (OR = 0.93, 95% CI = 0.88-0.98, P = 0.002). Academic surgeons experienced higher readmission rates compared to community surgeons (OR = 1.16, 95% CI = 1.01-1.34, P = 0.03). Surgeons practicing in the Northeast demonstrated lower two-year reoperation (OR = 0.88, 95% CI: 0.83-0.93, P < 0.001) and revision (OR = 0.88, 95% CI: 0.83-0.94, P < 0.001) rotator cuff repair risk, compared to surgeons in the Southern United States. Conclusions High-volume surgeons exhibit higher two-year reoperation rates after ARCR compared to low-volume surgeons. Early-career surgeons demonstrate increased hospitalizations. Sports Medicine or Shoulder and Elbow Surgery fellowships correlate with reduced two-year reoperation rates and 90-day ED visits.