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Introduction Partial thickness rotator cuff tears (PTRCT) are a common injury reported in 13–32% of the population, yet most of the current literature focuses on full thickness rotator cuff tears. Therefore, the purpose of this study was to analyze trends among patients with PTRCT including: (1) demographics; (2) comorbidities; (3) cost of care; (4) setting of initial diagnosis; and (5) change in incidence of PTRCT or surgical approach over time. Methods A Medicare patient-population consisting of 44 million lives was retrospectively analyzed from 2007 to 2017 using International Classification of Disease, 9th Revision (ICD-9) codes. Patients were identified for PTRCT using ICD-9 code: 726.13. The query yielded a total of 44,978 patients all of which had been previously diagnosed with PTRCT. Primary trends analyzed included: demographics, comorbidities, cost of care, initial setting of diagnosis, and change in incidence of PTRCT or surgical approach over time. Results PTRCTs and surgical repair of PTRCTs were most common in patients ages 65 to 69 and least common in patients who were 85 and older. Incidence of PTRCT was greater in females (54.12%) than males (45.88%). Comorbidities found within the population included hypertension, hyperlipidemia, diabetes mellitus, tobacco use, obesity, rheumatoid arthritis, and osteoarthritis of the shoulder. The average cost per episode of care totaled $9,923.26. PTRCTs were most commonly diagnosed in patients who resided in assisted living facilities (n = 27,106), making up 60% of the patient population. Reported incidence of PTRCT has increased substantially along with the surgical repair of PTRCT. Conclusion Reported cases of PTRCT and its surgical repair have both increased substantially over time. Approximately 11.70% of patients with PTRCT undergo either open or arthroscopic procedure as a means of surgical repair. With the growing popularity of arthroscopic procedures for rotator cuff repair, further investigation should be performed to analyze trends and risk factors for PTRCT, a seemingly underrepresented orthopedic condition.

INTRODUCTION: The study evaluated whether sleep apnea (SA) patients undergoing total shoulder arthroplasty (TSA) are at greater odds of: 1) medical complications; 2) implant-related complications; 3) readmission rates; and 4) costs. METHODS: Complications and readmissions were assessed using logistic regression analysis. Welch's t-test was used to compare CCI and cost between cohorts. RESULTS: 33,366 patients equally distributed in both cohorts. SA increased the odds of medical [Odds-ratio (OR)]: 2.52, p