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Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_1 | Pages 99 - 99
1 Feb 2020
Carducci M DeVito P Menendez M Zimmer Z Levy J Jawa A
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Background

Stress fracture of the acromium and scapular spine is a common complication following reverse total shoulder arthroplasty (RSA), with a reported incidence of 3.1%–11%. There is some evidence associating osteoporosis with increased risk of acromial stress fractures, but little else is known about the causes of acromial stress fractures after RSA. This study aims to define better preoperative factors, including demographics, comorbidities, and diagnoses, which predispose patients to postoperative acromial stress fractures.

Methods

We retrospectively identified patients who underwent primary or revision RSA for any indication between January 2013 and December 2018 by two surgeons at two separate hospitals. Stress fractures of the acromion were identified on plain radiographs or computed tomography, when necessary. Patient demographics, comorbidities, and surgical indications were compared between patients with and without acromial stress fractures.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 8 - 8
1 Mar 2017
Barnes L Menendez M Lu N Huybrechts K Ring D Ladha K Bateman B
Full Access

Background

There is growing clinical and policy emphasis on minimizing transfusion use in elective joint arthroplasty, but little is known about the degree to which transfusion rates vary across US hospitals. This study aimed to assess hospital-level variation in use of allogeneic blood transfusion in patients undergoing elective joint arthroplasty, and to characterize the extent to which variability is attributable to differences in patient and hospital characteristics.

Methods

The study population included 228,316 patients undergoing total knee arthroplasty (TKA) at 922 hospitals and 88,081 patients undergoing total hip arthroplasty (THA) at 606 hospitals from January 1, 2009, to December 31, 2011, in the Nationwide Inpatient Sample database, a 20% stratified sample of US community hospitals.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 7 - 7
1 Mar 2017
Menendez M Ring D Barnes L
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Background

Inpatient dislocation after total hip arthroplasty (THA) is considered a non-reimbursable “never event” by the Centers for Medicare and Medicaid Services. There is extensive evidence that technical procedural factors affect dislocation risk, but less is known about the influence of non-technical factors. We evaluated inpatient dislocation trends following elective primary THA, and identified patient and hospital characteristics associated with the occurrence of dislocation.

Methods

We used discharge records from the Nationwide Inpatient Sample (2002–2011). Temporal trends were assessed and multivariable logistic regression modeling was used to identify factors associated with dislocation.