Studi, Bologna, Italy. The design of a lower limb ortbosis requires as an input an accurate estimate of the loads that will be applied to the orthosis during its daily use. On the basis of reliable loading estimates the designers will be able to chose the materials and determine its optimal distribution in order to obtain a lightweight orthosis that will safely meet the mechanical and functional specifications. In the present study the moment at ankle and metatarsophalangeal joints were estimated by means of the projected GRF vector in order to describe the loads in normal joints during walking. Purpose of the study was the collection of a data base of normal subjects in the age range of child pathologies and the study of the correlations between joint moments and some anthropometric parameters aimed at the optimization of the design process. Fourtyfve normal subjects were tested: the age range of population tested was 4-18 years. Kinematics analpis of the lower limb joint joints was performed by means of an optoelectronic motion analysis system; dynamic data were collected by means of a piezoelectric force platform. Statistical analysis was used to determine equations for the prediction of the dorsifIexion moment at ankle (DTT), dorsifIexion (DMF) and plantarflexion moments at metatarsophalangeal (PMF) joints. The equations derived are the following:
Cicchella, A., Merni, F., Bombardi, F., Venturi, M., Olmucci, A. (1992). Gait dynamics and anthropometrics parameters in the development of a new ankle-foot orthosis. JOURNAL OF BIOMECHANICS, 27(6), 1-1 [10.1016/0021-9290(94)91404-4].
Gait dynamics and anthropometrics parameters in the development of a new ankle-foot orthosis
Cicchella A.
;Merni F.
;
1992
Abstract
Studi, Bologna, Italy. The design of a lower limb ortbosis requires as an input an accurate estimate of the loads that will be applied to the orthosis during its daily use. On the basis of reliable loading estimates the designers will be able to chose the materials and determine its optimal distribution in order to obtain a lightweight orthosis that will safely meet the mechanical and functional specifications. In the present study the moment at ankle and metatarsophalangeal joints were estimated by means of the projected GRF vector in order to describe the loads in normal joints during walking. Purpose of the study was the collection of a data base of normal subjects in the age range of child pathologies and the study of the correlations between joint moments and some anthropometric parameters aimed at the optimization of the design process. Fourtyfve normal subjects were tested: the age range of population tested was 4-18 years. Kinematics analpis of the lower limb joint joints was performed by means of an optoelectronic motion analysis system; dynamic data were collected by means of a piezoelectric force platform. Statistical analysis was used to determine equations for the prediction of the dorsifIexion moment at ankle (DTT), dorsifIexion (DMF) and plantarflexion moments at metatarsophalangeal (PMF) joints. The equations derived are the following:I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
