Comparison of Quantitative Sensory-Threshold Measures for Their Association With Foot Ulceration in Diabetic Patients (original) (raw)
We compared the accuracy of cutaneous pressure perception-threshold measurements with that of other sensory-threshold measurements for detecting diabetic foot ulcer patients. Three hundred fourteen non-insulindependent diabetic patients were studied, of whom 91 had either a current foot ulcer or a history of foot ulceration. Foot ulcer patients had much higher pressure perception thresholds at the hallux than those without foot ulcers (mean ± SE 4.63 ± 0.05 vs. 3.54 ± 0.04 U, P < 0.001). The magnitude of association was higher than that for vibration thresholds and markedlygreater than those for cool and warm thresholds. Pressure thresholds were highly accurate for identifying foot ulcer patients. At a threshold level of 4.21 U, the sensitivity was 0.84, with a specificity of 0.96. At similar sensitivities for vibration and thermal thresholds, specificities were lower. Foot ulceration and cutaneous pressure perception threshold are strongly associated. Pressure-threshold measurem...
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