Leather Science and Engineering ›› 2023, Vol. 33 ›› Issue (6): 77-84.doi: 10.19677/j.issn.1004-7964.2023.06.012

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Early Warning Threshold Test of the Pressure Monitoring System in the Shoes of Diabetic Patients

WAN Pengbo1, MIAO Rongrong1,*, WANG Pengli2, GUO Tianhong1, LI Xueqing1   

  1. 1. College of Art and Design, Shaanxi University of Science & Technology, Xi an 710021, China;
    2. College of Light Industry Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
  • Received:2023-01-15 Published:2023-12-01 Online:2023-11-14

Abstract: This work explored the threshold values of peak plantar pressure, pressure discomfort and pain associated with the increased risk of diabetic foot ulcer type II Wagner0, in order to provide data support for setting a pressure warning threshold for the in-shoe pressure monitoring system that can detect the plantar pressure of diabetic patients. A Footscan plantar pressure plate was used to collect the peak pressure in 10 zones of the plantar of 347 patients with type II Wagner0 diabetes mellitus, and a pressure tester was used to collect 9 test points of the plantar of 30 healthy people. The pressure discomfort and pain threshold were tested at the test speeds of 0.5, 1.0 and 2.0 mm/s, respectively. The results showed that the peak plantar pressure in the left and right foot of type II Wagner0 diabetes mellitus was greater in males than in females, and the main stress areas of the plantar were the 2nd, 3rd, 4th metatarsal bone and heel. In the test points of plantar pressure discomfort and pain threshold of healthy people with gender differences (P < 0.05), the fifth metatarsal bone, lateral arch and heel center were more male than female, and the third metatarsal bone were less male than female. The overall trend of plantar pressure discomfort and pain threshold in men and women was center heel > lateral arch > metatarsal > medial arch > big toe. At the same test point, the faster the test speed, the higher the pressure discomfort and pain threshold measured. To sum up, the pressure warning threshold setting of the pressure monitoring system in shoes for type II Wagner0 diabetes patients needs to be adjusted and decided according to the patient's gender and planta region. It is suggested that the peak plantar pressure of diabetic patients, the threshold of plantar pressure discomfort and the threshold of pressure pain of healthy people should be set as level III (general), level II (severe) and level I (severe) warning values in the pressure monitoring system, respectively.

Key words: diabetes mellitus, plantar pressure, discomfort, pain, early warning, threshold value

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