Evaluation of Improvement in Quality of Life and Physical Activity After Total Knee Arthroplasty in Greek Elderly Women

Th Tsonga1, S Kapetanakis*, 2, C Papadopoulos2, J Papathanasiou4, N Mourgias1, N Georgiou1, A Fiska2, K Kazakos3
1 Department of Physiotherapy and Rehabilitation, General Hospital Amalia Fleming, Athens, Greece
2 Department of Anatomy, Medical School of Alexandroupolis, Greece
3 Department of Orthopaedic Surgery, University Hospital of Alexandroupolis, Greece
4 Department of Physical Rehabilitation, Medical School of Plovdiv, Bulgaria

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© Tsonga et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Anatomy, Medical School of Alexandroupolis, Democritus University of Thrace, 68100, Alexandroupolis, Greece; Tel: 00306972707384; Fax: 00302106096722; E-mail:



The aim of this study was to evaluate the changes in quality of life of patients after total knee arthroplasty and to assess the changes in physical activity by using a self-reported questionnaire and by counting the number of steps 3-6 months after post-operatively.


Included were fifty two elderly women (age 72.6±65.9 years, mean±SD) with knee osteoarthritis undergoing primary knee arthroplasty. Health-related quality of life, physical activity, pain and function and the number of steps were assessed before, 3 and 6 months post-operatively. We used the Medical Outcomes Study Short Form (SF-36), the Physical Activity Scale for the Elderly (PASE) and the pedometer SW200 Digiwalker of Yamax.


Patients showed a significant improvement (p< 0.01, η2 =0.22) in health–related quality of life, particularly in physical function, (p<0 .001) body pain (p< 0.001) and vitality scale (p< 0.001) of SF-36 at 3 and 6 months after the procedure. Physical activity (PASE score) increased at 3 and 6 months after arthroplasty (p< 0.001, η2 =0.74), and the number of steps increased 6 months after, compared to the assessment that took place 3 months after operation (p< 0.001).


Our results suggest that total knee arthroplasty leads to a gradual improvement in quality of life of elderly patients over the first 6 post-operative months.

Keywords: Knee osteoarthritis, older adults, pedometers, PASE, SF-36, total knee arthroplasty.