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EN
Purpose: Presentation of the results of clinical study on new supplementary method applied in the physical rehabilitation of patients who underwent total hip arthroplasty. The standard rehabilitation program was supplemented with the lower limb loading symmetry training based on the follow-up posturography with an adaptively modified visual biofeedback, performed on a double plate posturographic platform. Methods: The research involved 60 randomly selected patients included in prospective and comparative clinical study in the scheme of the parallel groups. The subjects were divided into two groups comprised of 30 patients each. In both groups a conventional 21-day rehabilitation was carried out. Additionally, in experimental group the limb loading symmetry restoration training based on the follow-up posturography with an adaptively modified biofeedback was implemented. The biofeedback coefficient reflected the distribution of loading exerted on a given patient’s legs and was evaluated during the static posturography examinations carried out before each symmetry training session. Results: The eyes-open static posturography examinations indicated significant improvement in the lower limb loading symmetry in 29 (97%) patients from the experimental group ( p = 0.000003). In the control group, such an improvement was observed in 20 (67%) patients ( p = 0.034796). In the eyes closed examinations correction in the limb loading symmetry was evident in 23 (77%) patients from the experimental group ( p = 0.000247) and 18 (60%) patients from the control group ( p = 0.043327). Conclusions: Significant improvement in the lower limb loading symmetry was observed in patients who underwent rehabilitation supplemented with the herein discussed training method.
EN
The article presents a number of posturographic methods enabling objective postural symmetry assessment in patients undergoing rehabilitation after total hip replacement surgery. The key goal of such rehabilitation is fast restoration of a proper body weight distribution. The postural symmetry measures proposed in the article enable generalized quantification of the CoP (Center of Pressure) trajectories measured during standard static posturography diagnostics and the so-called follow-up posturography examination. The follow-up posturography is a relatively new but promising method of physical rehabilitation. All of the herein discussed posturographic measures have been designed specifically to quantify postural symmetry either in a standing and relaxed upright position, in the absence of any deterministic external stimulation (static posturography) or in the presence of a visual biofeedback stimulation enforcing the coordinated slow swaying movements of the body (the follow-up posturography). The experimental results presented in this paper constitute the outcome of the long-term cooperation between the Institute of Electronics of the Silesian University of Technology and the Silesian Rheumatology and Rehabilitation Hospital. The usefulness of the proposed postural symmetry measures has been verified in a series of clinical trials carried out in a selected group of patients undergoing rehabilitation after total hip replacement surgery.
PL
W artykule przedstawiono metodę oceny symetrii postawy wykorzystującą stabilografię ze wzrokowym sprzężeniem zwrotnym – zwaną stabilografią nadążną. Parametrami określającymi stopień symetrii są odchylenia standardowe składowych х, у różnicy nadążnej trajektorii stabilograficznej zarejestrowanej dla lewoskrętnego bodźca wzrokowego i odbicia lustrzanego względem osi rzędnych trajektorii nadążnej zmierzonej dla bodźca prawoskrętnego.
EN
The paper presents a method for postural symmetry assessment utilizing posturographic examination with visual feedback stimulation, known as the follow-up posturography. Parameters quantifying the degree of symmetry are the standard deviations of x, у components of a difference signal obtained from subtracting the mirror image of the follow-up trajectory acquired for clockwise visual stimulation, with Y being the axis of reflection, from the follow-up trajectory measured during the counterclockwise visual stimulation.
PL
W artykule zaprezentowano oryginalny sposób oceny symetrii postawy oparty na analizie kształtu trajektorii stabilograficznej uzyskiwanej w trakcie testu stabilografii nadążnej. Opracowany w ramach współpracy Politechniki Śląskiej ze Śląskim Szpitalem ReumatologicznoRehabilitacyjnym test stabilografii nadążnej wykorzystywany jest w rehabilitacji osób po endoprotezoplastyce stawu biodrowego i bezpośrednio związany jest z procesem kształtowania prawidłowego stereotypu postawy. Zaproponowana metoda oceny symetrii postawy oparta jest na kwantyfikacji stopnia symetrii bilateralnej oraz obrotowej trajektorii rejestrowanej w trakcie testu stabilografii nadążnej.
EN
The article presents a novel method of postural symmetry quantification based on shape analysis of COP (Center Of Pressure) trajectories measured during the follow-up posturography test session. The test itself is a result of mutual cooperation between Silesian University of Technology and Silesian Rheumatology and Rehabilitation Hospital. It’s main purpose is to support the process of restoration of optimal bilateral body weight distribution during the rehabilitation of patients that underwent alloplastic hip surgery. The symmetry quantification approach proposed in this paper utilizes bilateral and rotational symmetry measures calculated for the COP trajectories registered during the follow-up posturography test sessions conducted on a daily basis as part of the rehabilitation program.
PL
W artykule przedstawiono podstawy konstrukcji i zasadę działania platformy stabilograficznej. Skonstruowana platforma wraz ze specjalistycznym oprogramowaniem była klinicznie testowana na pacjentach po endoprotozoplastyce stawu biodrowego. Eksperyment okazał się klinicznie użyteczny. Przedstawiono również wyniki analizy statystycznej wykonanych eksperymentów.
EN
The aim of this paper is to present construction of stabilographic platform and its principle of operation. This stabilographic platform with specialist software was clinically tested on patients after a hip replacement surgery. The experiment had clinically useful results. The results of statistical analysis for these experiments are presented too.
PL
W artykule przedstawiono opis zastosowania stanowiska stabilograficzego do oceny stanu zdrowia pacjentów po endoprotezoplastyce stawu biodrowego. W pierwszej części pracy przedstawiono konstrukcję platformy stabilograficznej oraz podstawowe jej parametry. Następnie, zdefiniowano współczynniki wykorzystywane do oceny trajektrorii stabilograficznych. Wyniki przeprowadzonych badań klinicznych podsumowano w końcowej części artykułu.
EN
The paper describes the application of stabilographic stand in medical examinations of a patients after hip replacement surgery. The first part of the paper provides an overview of construction and basic parameters of the stabilographic platform. Then, the coefficients used for stabilographic trajectory evaluation are defined. In the last section of the paper, the results of a clinical examinations of the patients are summarized.
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