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1.
Annu Int Conf IEEE Eng Med Biol Soc ; 2019: 2434-2438, 2019 Jul.
Article in English | MEDLINE | ID: mdl-31946390

ABSTRACT

The foot is an important part of the human body that helps to maintain and shift a person's center of gravity. The roles of the toes in balancing and walking have been the focus of recent research. However, there are few methods or systems that can be used to quantitatively evaluate toe function while walking with respect to aging. Therefore, the purpose of this study is to develop an evaluation method for toe function based on the plantar pressure distribution while walking and evaluate how it relates to general gait parameters. Herein, we propose a method to identify the boundary position between the toe and foot based on the foot pressure distribution matrix. This technique was applied to gait analysis for 1774 female and 1553 male participants aged 20-90 years. The results of the statistical analysis suggest that the toe area ratio may reflect gait function and aging.


Subject(s)
Gait , Toes , Walking , Adult , Aged , Aged, 80 and over , Biomechanical Phenomena , Data Interpretation, Statistical , Female , Foot , Human Body , Humans , Male , Middle Aged , Pressure , Young Adult
2.
Technol Health Care ; 22(6): 805-15, 2014.
Article in English | MEDLINE | ID: mdl-25160000

ABSTRACT

BACKGROUND: Hip fracture in the elderly is a serious problem, and solutions to prevent falls are needed. OBJECTIVE: This study focused on elucidating data critical to fall prevention by evaluating ambulatory function, and we achieved this by developing a plantar pressure measurement device to determine gait function. METHODS: Our device enables measurement of gait function in the unrestrained state by transmitting wireless data. In this study, we applied the device to field experiments involving 98 subjects (39 healthy individuals, 44 elderly non-fallers, and 15 elderly fallers). Gait features were determined by measuring the pressure values and foot contact patterns used as gait function parameters in previous studies. RESULTS: In particular, decreased peak pressure values were noted at heel strike and toe off during walking in elderly fallers compared with elderly non-fallers. In addition, compared with healthy subjects, elderly fallers also showed extension of the double support phase, and differences in individual gait pattern features were observed between the groups. CONCLUSIONS: Experiments confirmed that our device can be used to obtain the gait features of a diverse group of elderly individuals. Moreover, our device enables objective and quantitative evaluation of gait function and thus may be useful for evaluating gait function in the elderly.


Subject(s)
Aged/physiology , Foot/physiology , Gait/physiology , Accidental Falls/prevention & control , Biomechanical Phenomena , Female , Humans , Male , Middle Aged , Pressure , Reference Values , Walking
3.
Article in English | MEDLINE | ID: mdl-24109840

ABSTRACT

In medical institutions, the threat of infection is closely focused, in particular, inspections regarding surgical site infections (SSI) are carried out. In this study, development of the application of Radio frequency identification (RFID) tags for surgical instrument has been promoted. It enables traceability and individual management of surgical instruments. An experiment was carried out following the cleaning Appraisal guidelines, which contaminated surgical instruments, and using the washer-disinfector (WD) as the main cleaner for surgical instruments with developed RFID tags attached to them. As a result, all of the instruments with RFID tags, the amount of residual protein was less than the recommended acceptable level of 100µg. If WD is used correctly, a sufficient cleaning effect can be expected. From this result, it became evident that the secondary infection risk is low from surgical instrument with RFID tags attached.


Subject(s)
Equipment Contamination/prevention & control , Evaluation Studies as Topic , Guidelines as Topic , Radio Frequency Identification Device , Sterilization/instrumentation , Surgical Instruments , Proteins/analysis
4.
Article in English | MEDLINE | ID: mdl-23367016

ABSTRACT

The foot arch serves important functions related to shock absorption and the action of walking. Simple and quantitative classifications of foot arch types, such as flat feet and high arches, help to provide health support services for the elderly. To develop an evaluation system for foot arch types using foot pressure distribution data, discriminant analyses were conducted using data from healthy elderly persons. The midfoot pressure ratio was selected and discriminants were derived. For evaluating the performance of the classification method, the derived discriminants were applied to the data from the other group of healthy elderly persons. Results indicate that both sensitivity and specificity of the classified foot arch types were sufficiently high.


Subject(s)
Algorithms , Diagnosis, Computer-Assisted/methods , Foot/physiology , Geriatric Assessment/methods , Manometry/methods , Weight-Bearing/physiology , Aged , Female , Humans , Male , Pressure , Reproducibility of Results , Sensitivity and Specificity
5.
Article in English | MEDLINE | ID: mdl-22256046

ABSTRACT

In order to develop an evaluation system for foot arch type in the elderly using foot pressure distribution data, foot pressure distribution parameters were selected and the data thereby derived were discussed. Results from the study show that the midfoot area and pressure ratios were correlated to foot arch type determined by visual analysis and were not correlated to arch height parameters. It is assumed that foot pressure distribution parameters reflect a different phenomenon from that of arch height parameters. The inconsistency between them is considered to be a result of the effect of the forefoot arch on the arch height parameters.


Subject(s)
Anthropometry/methods , Foot/physiology , Pressure , Aged , Female , Humans , Male
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