Body Mass is a Poor Predictor of Peak Plantar Pressure in Diabetic Men

Cavanagh, Peter R.; Sims, David S; Sanders, Lee J.

doi:10.2337/diacare.14.8.750

Cited by 96 publications

(64 citation statements)

References 7 publications

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“…20 In the case of the diabetic foot, however, feedback from the proprioceptive system is poor, and peak plantar pressure and its distribution will be changed; this usually happens earlier than the clinical signs and symptoms of diabetic foot become apparent. 21 It is generally thought that there are many factors that impact the distribution of plantar pressure, such as body weight, sex, pace and footwear construction; however, Cavanagh et al 22 reported that the correlation coefficient between peak plantar pressure and body weight was only 0.37. Furthermore, in the formation of plantar pressure, body weight accounted for only 13.8% of the total pressure.…”

Section: Discussionmentioning

confidence: 99%

The Characteristics and Clinical Significance of Plantar Pressure Distribution in Patients with Diabetic Toe Deformity: A Dynamic Plantar Pressure Analysis

2011

J Int Med Res

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This study evaluated plantar pressure distribution and its clinical significance in patients with diabetic foot toe deformities. Patients with diabetic claw or hammer toe deformities (patient group; n = 30) and healthy subjects without toe deformities (control group; n = 30) were recruited into the study. Plantar pressures in different regions of the foot were measured using the F-scan ® in-shoe plantar pressure dynamic analysis system. Peak pressures in the hallux and first to fifth metatarsal heads were significantly higher in the patient group compared with the control group. In the midfoot there was no significant difference between the two groups. Hindfoot peak plantar pressures were significantly lower in the patient group compared with the control group. The results indicated that toe deformities in patients with diabetes increased forefoot plantar pressures to abnormally high levels. If plantar pressure is regularly monitored in patients with diabetic foot, toe deformities might be detected earlier and ulceration prevented.

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Section: Discussionmentioning

confidence: 99%

The Characteristics and Clinical Significance of Plantar Pressure Distribution in Patients with Diabetic Toe Deformity: A Dynamic Plantar Pressure Analysis

2011

J Int Med Res

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“…Both diabetic groups included subjects with type I and type 11 diabetes mellitus. In these tests, changes in body mass were ruled out, as a previous independent study Cavanagh et al (1991) had demonstrated this factor to be unimportant in relation to changes in plantar pressure distribution. The conclusion drawn was that increases in localised pressure levels occur as a result of changes in plantar anatomy.…”

Section: Optical Properties Of the Skin And Bloodmentioning

confidence: 99%

An in-shoe laser Doppler sensor for assessing plantar blood flow in the diabetic foot

Cobb¹,

Claremont²

2001

Medical Engineering & Physics

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An in-shoe laser Doppler sensor for assessing plantar blood flow in the diabetic foot. Jonathan Edwin CobbPlantar ulceration is a complication of the diabetic foot prevalent in adults with type 11 diabetes mellitus. Although neuropathy, microvascular disease and biornechanical factors are all implicated, the mechanism by which the tissue becomes pre-disposed to damage remains unclear. Recent theories suggest that the nutritional supply to the tissue is compromised, either by increased flow through the arteriovenous anastomoses ('capillary steal' theory) or through changes in the micro vascu I ature (haemodynamic hypothesis). Clinical data to support these ideas has been limited to assessment of the unclad foot under rest conditions. A limitation of previous studies has been the exclusion of static and dynamic tissue loading, despite extensive evidence that these biornechanical factors are essential in the development of plantar ulceration. The present study has overcome these problems by allowing assessment of plantar blood flow, in-shoe, during standing and walking.The system comprises a laser Doppler blood flux sensor operating at 780nm, load sensor, measurement shoe, instrumentation, and analysis software. In-vitro calibration was performed using standard techniques. An in-vivo study of a small group of diabetic subjects indicated differences in the blood flux response between diabetic neuropaths, diabetics with vascular complications and a control group. For example, following a loading period of 120s, relative increases in response from rest to peak were: Control (150% to 259%), Vascular (-70% to 242%), Neuropathic (109%-174%) and recovery times to 50% of the peak response were: Control (33s to 45s), Vascular (43s to >120s), Neuropathic (>120s). Dynamic re-perfusion rates (arbitrary units per millisecond) obtained for the swing phase of gait were: Control (6.1 a. u/ms to 7.9 a. u/ms), Vascular (4 a. u/ms to 6.2 a. u/ms), Neuropathic (2.3 a. u/ms to 4.5 a. u/ms).

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“…This method is clearly explained below. Fourier domain analysis: The Fourier spectrum F(u,v) of each region of the image can be obtained by using the below equation (16) [Cavanagh et al, 1991]. In this equation, M and N represent the numbers of rows and columns of the image.…”

Section: Plantar Pressure Distribution Image Analysismentioning

confidence: 99%