The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December Effect

Background: The purpose of this study was to assess the impact of month of the year on postsurgical outcomes after primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) and to specifically analyze for a December effect. Material and methods: The National Inpatient Sample was used to...

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Main Authors: Abdul Kareem Zalikha, MD, Kassem-Ali J. Abbas, MSBS, Patrick Karabon, MSc, Inaya Hajj Hussein, PhD, Mouhanad M. El-Othmani, MD
Format: Article
Language:English
Published: Elsevier 2022-08-01
Series:Arthroplasty Today
Online Access:http://www.sciencedirect.com/science/article/pii/S2352344121002417
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author Abdul Kareem Zalikha, MD
Kassem-Ali J. Abbas, MSBS
Patrick Karabon, MSc
Inaya Hajj Hussein, PhD
Mouhanad M. El-Othmani, MD
author_facet Abdul Kareem Zalikha, MD
Kassem-Ali J. Abbas, MSBS
Patrick Karabon, MSc
Inaya Hajj Hussein, PhD
Mouhanad M. El-Othmani, MD
author_sort Abdul Kareem Zalikha, MD
collection DOAJ
description Background: The purpose of this study was to assess the impact of month of the year on postsurgical outcomes after primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) and to specifically analyze for a December effect. Material and methods: The National Inpatient Sample was used to identify all patients older than 40 years undergoing primary TKA and THA between 2006 and 2015. Patients were stratified based on the month of the year of surgery. In-hospital complication, disposition, and economic outcomes were comparatively analyzed. Results: There were statistically significant differences in outcomes based on month of the year. When comparing December to the other months, both TKA and THA patients had significantly lower rates of any complication, postoperative anemia, and genitourinary complications, while there were significantly higher rates of home than rehab discharge and shorter average length of stay in December. THA patients additionally had significantly lower rates of cardiac and respiratory complications during December. Conclusion: Postoperative outcomes are significantly associated with the month in which arthroplasty is performed. This study provides evidence of a positive “December effect” of improved in-hospital complications and economic outcomes for surgeries performed in December. Future research should direct attention to the impact that social factors may have on outcomes after elective surgical procedures and how these factors may be translated to other months.
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spelling doaj.art-23ef062ba5ce444aa98bd047f4362f992022-12-22T03:12:18ZengElsevierArthroplasty Today2352-34412022-08-0116101106The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December EffectAbdul Kareem Zalikha, MD0Kassem-Ali J. Abbas, MSBS1Patrick Karabon, MSc2Inaya Hajj Hussein, PhD3Mouhanad M. El-Othmani, MD4Department of Orthopaedic Surgery and Sports Medicine, Detroit Medical Center, Detroit, MI, USA; Corresponding author. Detroit Medical Center, 3990 John R Street, Harper Suite 7-Brush, Detroit, MI, 48201, USA. Tel.: +1 305 968 5336.College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USADepartment of Foundational Medical Studies, Oakland University William Beaumont School of Medicine, Auburn Hills, MI, USADepartment of Foundational Medical Studies, Oakland University William Beaumont School of Medicine, Auburn Hills, MI, USADepartment of Orthopaedic Surgery and Sports Medicine, Detroit Medical Center, Detroit, MI, USABackground: The purpose of this study was to assess the impact of month of the year on postsurgical outcomes after primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) and to specifically analyze for a December effect. Material and methods: The National Inpatient Sample was used to identify all patients older than 40 years undergoing primary TKA and THA between 2006 and 2015. Patients were stratified based on the month of the year of surgery. In-hospital complication, disposition, and economic outcomes were comparatively analyzed. Results: There were statistically significant differences in outcomes based on month of the year. When comparing December to the other months, both TKA and THA patients had significantly lower rates of any complication, postoperative anemia, and genitourinary complications, while there were significantly higher rates of home than rehab discharge and shorter average length of stay in December. THA patients additionally had significantly lower rates of cardiac and respiratory complications during December. Conclusion: Postoperative outcomes are significantly associated with the month in which arthroplasty is performed. This study provides evidence of a positive “December effect” of improved in-hospital complications and economic outcomes for surgeries performed in December. Future research should direct attention to the impact that social factors may have on outcomes after elective surgical procedures and how these factors may be translated to other months.http://www.sciencedirect.com/science/article/pii/S2352344121002417
spellingShingle Abdul Kareem Zalikha, MD
Kassem-Ali J. Abbas, MSBS
Patrick Karabon, MSc
Inaya Hajj Hussein, PhD
Mouhanad M. El-Othmani, MD
The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December Effect
Arthroplasty Today
title The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December Effect
title_full The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December Effect
title_fullStr The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December Effect
title_full_unstemmed The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December Effect
title_short The Impact of Month on Joint Arthroplasty In-Hospital Outcomes: The December Effect
title_sort impact of month on joint arthroplasty in hospital outcomes the december effect
url http://www.sciencedirect.com/science/article/pii/S2352344121002417
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