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Gait changes in patients after reconstruction of facial bones with fibula and iliac crest free vascularized flaps

Syczewska M., Krajewski R., Szczerbik E., Kalinowska M.

Acta of Bioengineering and Biomechanics

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2018

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Vol. 20, no. 1

185--190

EN

Patients with malignant tumours of the oral cavity require its surgical removal and reconstruction of the bone and soft tissues. The grafts are obtained either from leg (fibula) or pelvis (iliac crest). The removal of grafts from the locomotor apparatus can impair the gait. The aim of this study was to find out how the localization of donor site influences the gait pattern. Methods: Results obtained for 30 patients were analyzed (16 fibula graft, 14 iliac crest graft). Patients underwent instrumented gait analyses three times (VICON system): before surgery, 2–4 month after the surgery, and 4–8 months after the surgery. Results: In both groups several gait parameters were changed. Two parameters changed in both groups: gait speed and cadence. In patients receiving iliac crest graft the changed gait variables were: pelvic rotation, hip range in sagittal plane (operated side), knee range in sagittal plane (operated side), foot dorsiflexion in swing on both sides. In patients receiving fibula flap the changed gait variables were: tilt, range motion of the tilt, minimum hip flexion (operated side), time to maximum knee flexion (non-operated side), GGI (non-operated side) and step length (nonoperated side). Conclusions: The primary gait deviations occurring after surgery, and the compensatory mechanisms which subsequently arise depend on the localization of graft donor site. The results indicate that the patients in whom fibula flap was used have less problems with gait pattern after the surgery than the patients receiving iliac crest graft.

2

Zastosowanie ludzkiego wzorca chodu do sterowania robotem kroczącym

Parulski P., Michalski M., Kozłowski K.

Prace Naukowe Politechniki Warszawskiej. Elektronika

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2016

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z. 195, t. 1

115--124

PL

Celem niniejszego artykułu jest przedstawienie wstępnych wyników prac zmierzających do opracowania systemu do analizy i projektowania chodu dwunożnych robotów kroczących w oparciu o dane biologiczne. Akwizycja danych biologicznych przeprowadzona została w oparciu o system wizyjny firmy Optitrack oraz środowisko Matlab. Wygenerowane trajektorie stanowią podstawę do tworzenia zestawów funkcji wyjścia, a w konsekwencji do projektu sterownika, którego zadaniem będzie jak najlepsze odwzorowanie chodu ludzkiego.

EN

The paper presents an attempt to create a system for analysis and design a gait for the two-legged walking robot, on the basis of biological data. The acquisition of biological data was conducted based on the Optitrack vision system and the Matlab software. Generated trajectories are used to create a set of output functions, and finally to create the controller, to track the human gait pattern.

3

Gait patterns classification based on cluster and bicluster analysis

Pauk J., Minta-Bielecka K.

Biocybernetics and Biomedical Engineering

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2016

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Vol. 36, no. 2

391--396

EN

Gait patterns of hemiplegia patients have many potential applications such as assistance in diagnosis or clinical decision-making. Many techniques were developed to classify gait patterns in past years; however, these methods have some limitations. The main goal of the study was to present the performance evaluation results of the new biclustering algorithm called KMB. The second objective was to compare clustering and biclustering methods. The study was performed based on the gait patterns of 41 hemiplegia patients over 12 months post-stroke, at the age of 48.6 ± 19.6 years. Spatial–temporal gait parameters and joint moments were measured using motion capture system and force plates. Clustering and biclustering algorithms were applied for data consisting of joint moments of lower limbs. The obtained results of this study based on joint moments, clustering, and biclustering can be applied to evaluate patient condition and treatment effectiveness. We suggest that the biclustering algorithm compared to clustering algorithms better characterizes the specific traits and abnormalities of the joint moments, especially in case of hemiplegia patients.

4

Diagnostyka chodu - wzorzec a pacjenci z implantami

Jasińska-Choromańska D., Korzeniowski D.

Pomiary Automatyka Kontrola

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2005

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R. 51, nr 9 bis

340--342

PL

Chód ludzki jest jedną z doskonałych funkcji, która charakteryzuje każdego człowieka. Wzorcowy chód jest postrzegany jako precyzyjnie kontrolowane czynności polegające na cyklicznie skoordynowanych, powtarzalnych ruchach kończyn i tułowia mających na celu przemieszczenie ciała człowieka z miejsca do miejsca z jednoczesnym minimalnym wydatkowaniem energii. (Definicja chodu autorstwa: Gage J. R., DeLuca P. A. i Renshaw T. S.) [2]. Metody i narzędzia użyte do analizy i diagnostyki chodu pacjentów z implantami są opisane w dalszej części tego referatu.

EN

Gait is one of the splendid functions, which concerns every human being. The standard gait is perceived as precisely controlled activities, based on the periodically coordinated, recurrent leg and trunk (torso) movements, which provide the relocation of the human body from one place to another with the minimal waste of energy. (Gage J. R., DeLuca P. A., Renshaw T. S.)[2]. Analysis of the methods and tools used in gait diagnostics concerning the patients with implants is provident presented in this paper.