Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls
Primary osteoarthritis treatments such as a total hip (THR) or knee (TKR) replacement lead to postural control changes reinforced by age. Balance tests such as standing with eyes open (EO) or closed (EC) give a possibility to calculate both linear and nonlinear indicators. This study aimed to find t...
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MDPI AG
2022-06-01
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| Series: | Diagnostics |
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| Online Access: | https://www.mdpi.com/2075-4418/12/7/1595 |
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| author | Anna Hadamus Michalina Błażkiewicz Aleksandra J. Kowalska Kamil T. Wydra Marta Grabowicz Małgorzata Łukowicz Dariusz Białoszewski Wojciech Marczyński |
| author_facet | Anna Hadamus Michalina Błażkiewicz Aleksandra J. Kowalska Kamil T. Wydra Marta Grabowicz Małgorzata Łukowicz Dariusz Białoszewski Wojciech Marczyński |
| author_sort | Anna Hadamus |
| collection | DOAJ |
| description | Primary osteoarthritis treatments such as a total hip (THR) or knee (TKR) replacement lead to postural control changes reinforced by age. Balance tests such as standing with eyes open (EO) or closed (EC) give a possibility to calculate both linear and nonlinear indicators. This study aimed to find the group of linear and/or nonlinear measures that can differentiate healthy people and patients with TKR or THR from each other. This study enrolled 49 THR patients, 53 TKR patients, and 16 healthy controls. The center of pressure (CoP) path length, sample entropy (SampEn), fractal dimension (FD), and the largest Lyapunov exponent (LyE) were calculated separately for AP and ML directions from standing with EO/EC. Cluster analysis did not result in correct allocation to the groups according to all variables. The discriminant model included LyE (ML-EO, ML-EC, AP-EC), FD (AP-EO, ML-EC, AP-EC), CoP-path AP-EC, and SampEn AP-EC. Regression analysis showed that all nonlinear variables depend on the group. The CoP path length is different only in THR patients. It was concluded that standing with EC is a better way to assess the amount of regularity of CoP movement and attention paid to maintain balance. Nonlinear measures better differentiate TKR and THR patients from healthy controls. |
| first_indexed | 2024-03-09T03:32:20Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4418 |
| language | English |
| last_indexed | 2024-03-09T03:32:20Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diagnostics |
| spelling | doaj.art-4b022ad23d754935912526673ad006de2023-12-03T14:53:52ZengMDPI AGDiagnostics2075-44182022-06-01127159510.3390/diagnostics12071595Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy ControlsAnna Hadamus0Michalina Błażkiewicz1Aleksandra J. Kowalska2Kamil T. Wydra3Marta Grabowicz4Małgorzata Łukowicz5Dariusz Białoszewski6Wojciech Marczyński7Department of Rehabilitation, Faculty of Medical Sciences, Medical University of Warsaw, 02-091 Warsaw, PolandFaculty of Rehabilitation, The Józef Piłsudski University of Physical Education in Warsaw, 00-809 Warsaw, PolandProfessor Adam Gruca Independent Public Teaching Hospital in Otwock, Rehabilitation Clinic, 05-400 Otwock, PolandProfessor Adam Gruca Independent Public Teaching Hospital in Otwock, Rehabilitation Clinic, 05-400 Otwock, PolandDepartment of Rehabilitation, Faculty of Medical Sciences, Medical University of Warsaw, 02-091 Warsaw, PolandProfessor Adam Gruca Independent Public Teaching Hospital in Otwock, Rehabilitation Clinic, 05-400 Otwock, PolandDepartment of Rehabilitation, Faculty of Medical Sciences, Medical University of Warsaw, 02-091 Warsaw, PolandMedical Centre for Postgraduate Education, 01-813 Warsaw, PolandPrimary osteoarthritis treatments such as a total hip (THR) or knee (TKR) replacement lead to postural control changes reinforced by age. Balance tests such as standing with eyes open (EO) or closed (EC) give a possibility to calculate both linear and nonlinear indicators. This study aimed to find the group of linear and/or nonlinear measures that can differentiate healthy people and patients with TKR or THR from each other. This study enrolled 49 THR patients, 53 TKR patients, and 16 healthy controls. The center of pressure (CoP) path length, sample entropy (SampEn), fractal dimension (FD), and the largest Lyapunov exponent (LyE) were calculated separately for AP and ML directions from standing with EO/EC. Cluster analysis did not result in correct allocation to the groups according to all variables. The discriminant model included LyE (ML-EO, ML-EC, AP-EC), FD (AP-EO, ML-EC, AP-EC), CoP-path AP-EC, and SampEn AP-EC. Regression analysis showed that all nonlinear variables depend on the group. The CoP path length is different only in THR patients. It was concluded that standing with EC is a better way to assess the amount of regularity of CoP movement and attention paid to maintain balance. Nonlinear measures better differentiate TKR and THR patients from healthy controls.https://www.mdpi.com/2075-4418/12/7/1595hip arthroplastyknee arthroplastyolder adultspostural controlbody balanceosteoarthritis |
| spellingShingle | Anna Hadamus Michalina Błażkiewicz Aleksandra J. Kowalska Kamil T. Wydra Marta Grabowicz Małgorzata Łukowicz Dariusz Białoszewski Wojciech Marczyński Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls Diagnostics hip arthroplasty knee arthroplasty older adults postural control body balance osteoarthritis |
| title | Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls |
| title_full | Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls |
| title_fullStr | Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls |
| title_full_unstemmed | Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls |
| title_short | Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls |
| title_sort | nonlinear and linear measures in the differentiation of postural control in patients after total hip or knee replacement and healthy controls |
| topic | hip arthroplasty knee arthroplasty older adults postural control body balance osteoarthritis |
| url | https://www.mdpi.com/2075-4418/12/7/1595 |
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