Plantar pressure distribution in non-obese, overweight and obese subjects with diabetic neuropathy while walking

Overweight and obesity are growing health complications mostly associated with metabolic and musculoskeletal comorbidities. The knowledge about the effects of obesity on the plantar pressure distribution in diabetic population is lacking. The purpose of this study was to assess the differences regarding plantar pressure distribution in participants with diabetic neuropathic feet who had a different body mass index (BMI). Peak plantar pressure was measured in 12 participants during level walking. The subjects were classified into three categories, each containing 4 participants, as non-obese, overweight and obese according to their BMI values. Peak plantar pressure was determined for the hindfoot, midfoot and forefoot regions using Pedar-X® in-shoe pressure measurement system. Lower peak plantar pressure was observed in midfoot compared to the hindfoot and forefoot. There was no significant difference in peak plantar pressure between the groups for forefoot and hindfoot. However, the obese group showed a significant higher peak plantar pressure in midfoot compared to the non-obese and overweight diabetic foot with neuropathy. Therefore, the high peak plantar pressure at the midfoot can cause a foot pain in obese diabetic neuropathic foot.