BACKGROUND: Shoulder arthroplasty is increasing in the United States. Reverse shoulder arthroplasty (RSA) has emerged as an alternative treatment for end-stage glenohumeral pathology. Until recently, administrative coding practices have not differentiated RSA from traditional @entity348 ( @entity348 ), and thus national procedural volume has been unknown. The purpose of this study was to define the utilization, @entity1 characteristics, indications and complications for RSA, and contrast these to @entity348 and hemiarthroplasty (HA). METHODS: The 2011 Nationwide Inpatient Sample (HCUP-NIS) dataset was queried using ICD-9-CM codes to identify @entity1 undergoing RSA, @entity348 , or HA. We used weighted estimates of national procedure volume, per-capita utilization, @entity1 comorbidities, and inpatient complications denned by the Agency for Healthcare Research and Quality (AHRQ) and identified them using standard methods described by Elixhauser. ANOVA statistical analysis was used and significance was denned as p value <0.05. RESULTS: In 2011, 66,485 @entity1 underwent shoulder arthroplasty; there were 21,692 cases of RSA, 29,359 of @entity348 , and 15,434 of HA. Utilization of RSA and @entity348 increased between 2002-2011, and decreased for HA. RSA @entity1 were older (72.7 years vs 67.4 @entity348 vs 66.8 HA) and more commonly female. Comorbidity burden was highest in @entity1 undergoing HA. Inpatient complications were highest after RSA (p < 0.001). When compared to @entity348 , RSA was more commonly used in the setting of rotator cuff disease, and posttraumatic sequelae (p<0.001). CONCLUSIONS: Our findings represent the first national estimates of RSA within the United Sates. RSA is a significant contributor to increasing shoulder arthroplasty utilization nationally representing one-third of arthroplasty cases. Conditions traditionally managed with HA in older populations appear to now be more commonly managed with RSA. RSA is performed on older @entity1 with expanded indications.

Reverse Shoulder Arthroplasty in the United States: A Comparison of National Volume, XXXX Demographics, Complications, and Surgical Indications.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity348 :: ('MESH:C535338', 'Disease') :: ['total shoulder arthroplasty', 'TSA']
@entity1 :: (9606,Species) :: ['Patient']
