Total Knee Arthroplasty (TKA) is actually the most effective treatment option for patients with end-stage osteoarthritis (OA). However, nearly 20% of patients who underwent TKA remain unsatisfied with their clinical outcome. Investigating modifiable factors that limit knee functioning following TKA we may notice the significance of lower limb muscles strength. Gait pattern is also affected by OA, as arthritic knee joint cannot provide proper range of motion (ROM) and stability.Therefore any deviation in biomechanics should be noticed and analyzed. After TKA patients' physical function may change, but the study should be conducted to prove whether it improves or not. Patient-reported outcome defined by OKS (Oxford Knee Score) and FJS (Forgotten Joint Score) questionnaires will be evaluated.
Study Type
OBSERVATIONAL
Enrollment
100
Department of Orthopedics and Rehabilitation, Medical University of Warsaw
Warsaw, Poland
RECRUITINGMuscle strength measurement with a use of dynamometer
Analysis of pre- and postoperative strength of lower limb muscles. Assessment of force \[N\] generated by knee flexors, knee extensors, hip adductors and hip abductors with a use of a hand-held dynamometer.
Time frame: 6 months
Gait biomechanics analysis - step length
Analysis of pre- and postoperative parameters of gait pattern and biomechanics with a use of Baiobit device (wearable motion analysis system). Subjected to the analysis will be the step length (in meters).
Time frame: 6 months
Gait biomechanics analysis - gait speed
Analysis of pre- and postoperative parameters of gait pattern and biomechanics with a use of Baiobit device (wearable motion analysis system). Subjected to the analysis will be the gait speed (metre per second).
Time frame: 6 months
Gait biomechanics analysis - phases of gait
Analysis of pre- and postoperative parameters of gait pattern and biomechanics with a use of Baiobit device (wearable motion analysis system). Subjected to the analysis will be the swing and the stance phase of gait (% of the gait cycle).
Time frame: 6 months
Gait biomechanics analysis - step duration
Analysis of pre- and postoperative parameters of gait pattern and biomechanics with a use of Baiobit device (wearable motion analysis system). Subjected to the analysis will be the duration of left and right step (in seconds).
Time frame: 6 months
Physical function assessment based on standardized test
Analysis of pre- and postoperative physical function on the basis of Up and Go test.
Time frame: 6 months
Patient-reported outcome - Oxford Knee Score
Pre- and postoperative evaluation of Oxford Knee Score. Patients will be asked 12 closed-end questions. 5 possible answers to choose. The scoring system is from 0 to 4 for each answer. Total score ranges from 0 to 48, where 0 is the poorest outcome, and 48 is the best one.
Time frame: 6 months
Patient-reported outcome - Forgotten Joint Score
Pre- and postoperative evaluation of Forgotten Joint Score. The questionnaire is based on 12 questions. Total score ranges from 0 to 100. Higher score on the questionnaire, means better results were obtained.
Time frame: 6 months
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