Increased forefoot loading is associated with an increased plantar flexion moment

NewsBot · Aug 21, 2013

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Increased forefoot loading is associated with an increased plantar flexion moment.
Melai T, Schaper NC, Ijzerman TH, de Lange TL, Willems PJ, Meijer K, Lieverse AG, Savelberg HH.
Hum Mov Sci. 2013 Aug 16.

The aim of this study was to identify the cascade of effects leading from alterations in force generation around the ankle joint to increased plantar pressures under the forefoot. Gait analysis including plantar pressure measurement was performed at an individually preferred and a standardized, imposed gait velocity in diabetic subjects with polyneuropathy (n=94), without polyneuropathy (n=39) and healthy elderly (n=19). The plantar flexion moment at 40% of the stance phase was negatively correlated with the displacement rate of center of pressure (r=-.749, p<.001 at the imposed, and r=-.693, p<.001 at the preferred gait velocity). Displacement rate of center of pressure was strongly correlated with forefoot loading (r=-.837, p<.001 at the imposed, and r=-.731, p<.001 at the preferred gait velocity). People with a relatively high plantar flexion moment at 40% of the stance phase, have a faster forward transfer of center of pressure and consequently higher loading of the forefoot. This indicates that interventions aimed at increasing the control of the roll-off of the foot may contribute to a better plantar pressure distribution.
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Admin2 · Aug 23, 2013

Related Thread:
Achilles tendon lengthening in the diabetic foot

Dr. Steven King · Aug 26, 2013

"People with a relatively high plantar flexion moment at 40% of the stance phase, have a faster forward transfer of center of pressure and consequently higher loading of the forefoot. This indicates that interventions aimed at increasing the control of the roll-off of the foot may contribute to a better plantar pressure distribution.

Aloha,

We have been working with advanced composite spring lever carbon fiber orthotic systems to increase the the control of the roll-off of the foot and distribute plantar pressure successfully. We have seen this quick movement of the COM through midstance as well with our lab testing.

Great research keep it up!

A hui hou,
Steve

NewsBot · Aug 27, 2017

Development of a Plantar Load Estimation Algorithm for Evaluation of Forefoot Load of Diabetic Patients during Daily Walks Using a Foot Motion Sensor.
Watanabe A et al
J Diabetes Res. 2017;2017:5350616. doi: 10.1155/2017/5350616

Forefoot load (FL) contributes to callus formation, which is one of the pathways to diabetic foot ulcers (DFU). In this study, we hypothesized that excessive FL, which cannot be detected by plantar load measurements within laboratory settings, occurs in daily walks. To demonstrate this, we created a FL estimation algorithm using foot motion data. Acceleration and angular velocity data were obtained from a motion sensor attached to each shoe of the subjects. The accuracy of the estimated FL was validated by correlation with the FL measured by force sensors on the metatarsal heads, which was assessed using the Pearson correlation coefficient. The mean of correlation coefficients of all the subjects was 0.63 at a level corridor, while it showed an intersubject difference at a slope and stairs. We conducted daily walk measurements in two diabetic patients, and additionally, we verified the safety of daily walk measurement using a wearable motion sensor attached to each shoe. We found that excessive FL occurred during their daily walks for approximately three hours in total, when any adverse event was not observed. This study indicated that FL evaluation method using wearable motion sensors was one of the promising ways to prevent DFUs.
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NewsBot · Jul 21, 2021

Immediate Effects of Weight-Bearing Calf Stretching on Ankle Dorsiflexion Range of Motion and Plantar Pressure During Gait in Patients with Diabetes Mellitus
Noriaki Maeshige et al
Int J Low Extrem Wounds. 2021 Jul 13

High plantar pressure is a risk factor for diabetic foot ulcers, and it is known that restriction of ankle dorsiflexion range of motion (ROM) causes high plantar pressure. Stretching is a non-invasive and general means to improve ROM; however, the effect of stretching on the ROM and plantar pressure has not been clarified in patients with diabetes mellitus. We aimed to study the effects of intermittent weight-bearing stretching on ankle dorsiflexion ROM and plantar pressure during gait in patients with diabetes mellitus. Seven patients with diabetes mellitus participated, and their triceps surae was stretched using weight-bearing stretching with a stretch board. Five minutes of stretching was performed 4 times with a rest interval of 30 s. Ankle dorsiflexion ROM was measured with the knee flexed and extended. Peak pressure and pressure-time integral during gait were measured and calculated for the rearfoot, midfoot, forefoot, and total plantar surface before and after stretching. Ankle dorsiflexion ROM with the knee extended or bent increased significantly after stretching (P < .05). Peak pressure and the pressure-time integral decreased significantly, especially in the forefoot (P < .01), and these also decreased significantly in the total plantar surface (P < .05). The duration of foot-flat decreased after stretching (P < .05). Weight-bearing stretching improved ankle dorsiflexion ROM and reduced plantar pressure during gait. These results suggest that weight-bearing calf stretching may be an effective means to prevent and treat diabetic foot ulcers.
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Increased forefoot loading is associated with an increased plantar flexion moment

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Dr. Steven King Well-Known Member

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Increased forefoot loading is associated with an increased plantar flexion moment

NewsBot The Admin that posts the news.

Admin2 Administrator Staff Member

Dr. Steven King Well-Known Member

NewsBot The Admin that posts the news.

NewsBot The Admin that posts the news.

Increased Tibial Strain in Forefoot Striking

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Minimalist footwear may put crossfit athletes at increased risk for injury

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Share This Page

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