1. Calvo E, Morcillo D, Foruria AM, Redondo-Santamaría
E, Osorio-Picorne F, Caeiro JR. Nondisplaced proximal
humeral fractures: high incidence among outpatienttreated
osteoporotic fractures and severe impact
on upper extremity function and patient subjective
health perception. Journal of Shoulder and Elbow
Surgery. 2011; 20(5):795–801.
2. Court-Brown CM, Caesar B. Epidemiology of adult
fractures: A review. Injury. 2006; 37(8):691–7.
3. Yahuaca BI, Simon P, Christmas KN, Patel S, Gorman
RA, Mighell MA, et al. Acute surgical management
of proximal humerus fractures: ORIF vs.
hemiarthroplasty vs. reverse shoulder arthroplasty.
Journal of Shoulder and Elbow Surgery. 2020;
29(7S):S32-S40
4. van der Merwe M, Boyle MJ, Frampton CMA, Ball
CM. Reverse shoulder arthroplasty compared with
hemiarthroplasty in the treatment of acute proximal
humeral fractures. Journal of Shoulder and Elbow
Surgery. 2017; 26(9):1539–45.
5. Schumaier A, Grawe B. Proximal Humerus Fractures:
Evaluation and Management in the Elderly Patient.
Geriatric Orthopaedic Surgery & Rehabilitation.
2018; 9:215145851775051.
6. United States Census Bureau. Older People Projected
to Outnumber Children for First Time in U.S.
History. [Internet]. Release Number CB18-41. 2018
[cited 2020]. Available from: https://www.census.
gov/newsroom/press-releases/2018/cb18-41-
population-projections.html
7. Jacobs JP, Lahey SJ, Nichols FC, Levett JM, Johnston GG,
Freeman RK, et al. How Is Physician Work Valued? The
Annals of Thoracic Surgery. 2017;103(2):373–80.
8. Conversion Factor adjusted for budget neutrality -
dollar amount used to convert RVUs into a payment
amount adjusted for budget neutrality to ensure
that total Medicare payments comply with allowed
total Medicare funding. [Internet]. Work. 2010 [cited
2020]. Available from: http://labor.alaska.gov/wc/
med-serv-comm/CMS_RVU_Calculations
9. Lorio M, Martinson M, Ferrara L. Paired Comparison
Survey Analyses Utilizing Rasch Methodology of
the Relative Difficulty and Estimated Work Relative
Value Units of CPT ® Code 27279. International
Journal of Spine Surgery. 2016; 10:40.
10. Shah DR, Bold RJ, Yang AD, Khatri VP, Martinez SR,
Canter RJ. Relative value units poorly correlate with
measures of surgical effort and complexity. Journal
of Surgical Research. 2014; 190(2):465–70.
11. Schwartz DA, Hui X, Velopulos CG, Schneider EB,
Selvarajah S, Lucas D, et al. Does relative value unit–
based compensation shortchange the acute care
surgeon? Journal of Trauma and Acute Care Surgery.
2014; 76(1):84–94.
12. Peterson J, Sodhi N, Khlopas A, Piuzzi NS, Newman
JM, Sultan AA, et al. A Comparison of Relative
Value Units in Primary Versus Revision Total Knee
Arthroplasty. The Journal of Arthroplasty. 2018;
33(7):S39–42.
13. Sodhi N, Piuzzi NS, Khlopas A, Newman JM, Kryzak TJ,
Stearns KL, et al. Are We Appropriately Compensated
by Relative Value Units for Primary vs Revision Total
Hip Arthroplasty? The Journal of Arthroplasty. 2018;
33(2):340–4.
14. American College of Surgeons. ACS National Surgical
Quality Improvement Program [Internet]. [Cited
2020]. Available from: https://www.facs.org/qualityprograms/
acs-nsqip
15. CMS. Physician Fee Schedule Search [Internet]. [Cited
2020]. Available from: https://www.cms.gov/apps/
physician-fee-schedule/search/search-criteria.aspx
16. CMS. CPT Codes [Internet]. 2014 [cited 2020].
Available from: https://www.cms.gov/Medicare/
Coding/ICD9ProviderDiagnosticCodes/codes.html
17. AMA. Medicare Physician Payment Schedule
[Internet]. [Cited 2020]. Available from: https://
w w w. a m a - a s s n . o r g / p ra c t i c e - m a n a g e m e n t /
medicare-physician-payment-schedules
18. Sodhi N, Dalton SE, Garbarino LJ, Gold PA, Piuzzi
NS, Newman JM, et al. Not all primary total hip
arthroplasties are equal—so is there a difference in
reimbursement? Annals of Translational Medicine.
2018;7(4):74.
19. Skråmm I, Š altyt Benth J, Bukholm G. Decreasing time
trend in SSI incidence for orthopaedic procedures:
Surveillance matters! Journal of Hospital Infection.
2012; 82(4):243–7.
20. Agarwalla A, Gowd AK, Yao K, Bohl DD, Amin
NH, Verma NN, et al. A 15-Minute Incremental
Increase in Operative Duration Is Associated
With an Additional Risk of Complications Within
30 Days After Arthroscopic Rotator Cuff Repair.
Orthopaedic Journal of Sports Medicine. 2019;
7(7):2325967119860752.
21. Ravi B, Jenkinson R, O’Heireamhoin S, Austin PC, Aktar
S, Leroux TS, et al. Surgical duration is associated
with an increased risk of periprosthetic infection
following total knee arthroplasty: A populationbased
retrospective cohort study. EClinicalMedicine.
2019; 16:74–80.
22. Cheng H, Chen BPH, Soleas IM, Ferko NC, Cameron
CG, Hinoul P. Prolonged Operative Duration Increases
Risk of Surgical Site Infections: A Systematic Review.
Surgical Infections. 2017; 18(6):722–35.
23. Somerson JS, Hsu JE, Neradilek MB, Matsen FA.
Analysis of 4063 complications of shoulder
arthroplasty reported to the US Food and Drug
Administration from 2012 to 2016. J Shoulder Elb
Surg. 2018;27(11):1978-1986.
24. Bohsali KI, Bois AJ, Wirth MA. Complications of
shoulder arthroplasty. J Bone Jt Surg - Am Vol.
2017;99(3):256-269.