Archive for Март, 2008

New Accelerometric Method to Discriminate Between Asymptomatic Subjects and Patients With Medial Knee Osteoarthritis During 3-D Gait

Дата: Март 14th, 2008 Автор:
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  • Тип контента: Научная статья
  • Номер документа: 1007
  • Название документа: New Accelerometric Method to Discriminate Between Asymptomatic Subjects and Patients With Medial Knee Osteoarthritis During 3-D Gait
  • Номер (DOI, IBSN, Патент): 10.1109/TBME.2007.912428
  • Изобретатель/автор: Turcot, K., Pelletier, M., Hagemeister, N., de Guise, J.A., Boivin, K., Aissaoui, R.
  • Правопреемник/учебное заведение: Univ. de Montreal, Montreal
  • Дата публикации документа: 2008-03-14
  • Страна опубликовавшая документ: Канада
  • Язык документа: Английский
  • Наименование изделия: Не заполнено
  • Источник: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&a
  • Вложения: Да
  • Аналитик: Дмитрий Соловьев

This study presents a new method to estimate 3-D linear accelerations at tibial and femoral functional coordinate systems. The method combines the use of 3-D accelerometers, 3-D gyroscopes and reflective markers rigidly fixed on an exoskeleton and, a functional postural calibration method. Marker positions were tracked by a six-camera optoelectronic system (VICON 460, Oxford Metrics). The purpose of this study was to determine if this method could discriminate between medial osteoarthritic and asymptomatic knees during gait. Nine patients with osteoarthritic knees and nine asymptomatic control subjects were included in this study. Eighteen parameters representing maximal, minimal, and range of acceleration values were extracted during the loading and preswing to mid-swing phase periods, and were compared in both groups. Results show good discriminative capacity of the new method. Eight parameters were significantly different between both groups. The proposed method has the potential to be used in comprehending and monitoring gait strategy in patients with osteoarthritic knee.

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Design of a compliantly actuated exo-skeleton for an impedance controlled gait trainer robot

Дата: Март 5th, 2008 Автор:
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  • Тип контента: Научная статья
  • Номер документа: 1409
  • Название документа: Design of a compliantly actuated exo-skeleton for an impedance controlled gait trainer robot
  • Номер (DOI, IBSN, Патент): 10.1109/IEMBS.2006.259397
  • Изобретатель/автор: Veneman, J.F., van der Kooij, H., Ekkelenkamp, R.
  • Правопреемник/учебное заведение: Twente Univ.
  • Дата публикации документа: 2008-03-05
  • Страна опубликовавшая документ: Нидерланды (Голландия)
  • Язык документа: Английский
  • Наименование изделия: Не заполнено
  • Источник: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&a
  • Вложения: Да
  • Аналитик: Дмитрий Соловьев

We have designed and built a lower extremity powered exo-skeleton (LOPES) for the training of post-stroke patients. This paper describes the philosophy behind the design of LOPES, motivates the choices that have been made and gives some exemplary results of the ranges of mechanical impedances that can be achieved.

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