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Trends and epidemiology of knee extensor mechanism injuries presenting to United States emergency departments from 2001 to 2020.

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Title: Trends and epidemiology of knee extensor mechanism injuries presenting to United States emergency departments from 2001 to 2020.
Authors: Lyons, Joseph G.1 (AUTHOR) joseph.g.lyons@wright.edu, Mian, Humza M.1 (AUTHOR), Via, Garrhett G.1 (AUTHOR), Brueggeman, David A.1 (AUTHOR), Krishnamurthy, Anil B.1 (AUTHOR)
Source: Physician & Sportsmedicine. Apr2023, Vol. 51 Issue 2, p183-192. 10p.
Subject Terms: Tendon injuries, Quadriceps tendon, Patella fractures, Patellar tendon, Tendon rupture
Geographic Terms: United States
Abstract: Injuries to the native extensor mechanism (EM) of the knee are potentially disabling and often require surgical treatment. Large-scale, updated epidemiological data on these injuries is lacking. The objective of the current study was to examine recent trends in EM injuries presenting to United States (US) Emergency Departments (EDs) over the last 20 years using a nationally representative sample. This study retrospectively analyzed the National Electronic Injury Surveillance System (NEISS) database to identify cases of EM injuries (defined as either a quadriceps tendon rupture, a patella fracture, or a patellar tendon rupture) presenting to EDs in the US from 2001 to 2020. During the study period, an estimated 214,817 EM injuries occurred in an at-risk population of 6,183,899,410 person-years for an overall incidence rate of 3.47 per 100,000 person-years. Patella fractures (PFs) were the most common injury type, representing 77.5% of all EM injuries (overall incidence rate: 2.69), followed by patellar tendon ruptures (PTRs; 13.5%; incidence: 0.48) and quadriceps tendon ruptures (QTRs; 9%; incidence: 0.31). Demographic characteristics and mechanisms of injury differed between injury types. Annual incidence rates increased significantly during the study period for all EM injury types, with PTRs demonstrating the largest relative increase (average annual percent increase: PF, 2.8%; PTR, 7.2%; QTR, 5.3%). Accounting for population growth yielded an increasing incidence of all EM injuries combined from 3.65 in 2001 to 4.9 in 2020. The largest relative increases in incidence rates were observed in older age groups. Extensor mechanism injuries of the knee are increasing in the US, which likely reflects an aging and more active population. These types of injuries are associated with substantial functional impairment and recent increases in incidence rates highlight the need for injury prevention and management strategies. [ABSTRACT FROM AUTHOR]
Copyright of Physician & Sportsmedicine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Education Research Complete
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PubType: Academic Journal
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  Data: Trends and epidemiology of knee extensor mechanism injuries presenting to United States emergency departments from 2001 to 2020.
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  Data: <searchLink fieldCode="JN" term="%22Physician+%26+Sportsmedicine%22">Physician & Sportsmedicine</searchLink>. Apr2023, Vol. 51 Issue 2, p183-192. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Tendon+injuries%22">Tendon injuries</searchLink><br /><searchLink fieldCode="DE" term="%22Quadriceps+tendon%22">Quadriceps tendon</searchLink><br /><searchLink fieldCode="DE" term="%22Patella+fractures%22">Patella fractures</searchLink><br /><searchLink fieldCode="DE" term="%22Patellar+tendon%22">Patellar tendon</searchLink><br /><searchLink fieldCode="DE" term="%22Tendon+rupture%22">Tendon rupture</searchLink>
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– Name: Abstract
  Label: Abstract
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  Data: Injuries to the native extensor mechanism (EM) of the knee are potentially disabling and often require surgical treatment. Large-scale, updated epidemiological data on these injuries is lacking. The objective of the current study was to examine recent trends in EM injuries presenting to United States (US) Emergency Departments (EDs) over the last 20 years using a nationally representative sample. This study retrospectively analyzed the National Electronic Injury Surveillance System (NEISS) database to identify cases of EM injuries (defined as either a quadriceps tendon rupture, a patella fracture, or a patellar tendon rupture) presenting to EDs in the US from 2001 to 2020. During the study period, an estimated 214,817 EM injuries occurred in an at-risk population of 6,183,899,410 person-years for an overall incidence rate of 3.47 per 100,000 person-years. Patella fractures (PFs) were the most common injury type, representing 77.5% of all EM injuries (overall incidence rate: 2.69), followed by patellar tendon ruptures (PTRs; 13.5%; incidence: 0.48) and quadriceps tendon ruptures (QTRs; 9%; incidence: 0.31). Demographic characteristics and mechanisms of injury differed between injury types. Annual incidence rates increased significantly during the study period for all EM injury types, with PTRs demonstrating the largest relative increase (average annual percent increase: PF, 2.8%; PTR, 7.2%; QTR, 5.3%). Accounting for population growth yielded an increasing incidence of all EM injuries combined from 3.65 in 2001 to 4.9 in 2020. The largest relative increases in incidence rates were observed in older age groups. Extensor mechanism injuries of the knee are increasing in the US, which likely reflects an aging and more active population. These types of injuries are associated with substantial functional impairment and recent increases in incidence rates highlight the need for injury prevention and management strategies. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Physician & Sportsmedicine is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/00913847.2021.2024775
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        Text: English
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      – SubjectFull: Tendon injuries
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      – SubjectFull: Quadriceps tendon
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      – SubjectFull: Patella fractures
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      – SubjectFull: Patellar tendon
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      – SubjectFull: Tendon rupture
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      – SubjectFull: United States
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      – TitleFull: Trends and epidemiology of knee extensor mechanism injuries presenting to United States emergency departments from 2001 to 2020.
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              Text: Apr2023
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