Abstract
The aim of the present study was to evaluate the diagnostic efficacy of different tendon reflexes in detecting diabetic peripheral neuropathy (DPN). According to the changes in tendon reflexes, all patients with diabetes were divided into three strata: impaired Achilles reflex only, impaired lower extremity reflexes, and impaired lower and upper extremity reflexes. Taking nerve conduction studies (NCS) as the gold standard, the sensitivity, specificity, and predictive ability of the tendon reflexes of these three strata, as well as the Toronto clinical scoring system (TCSS) and Michigan Neuropathy Screening Instrument (MNSI), were calculated. Then, the electrophysiological characteristics of diabetic patients with different tendon reflexes were analysed. Among the 240 patients studied, 92 (38.3%) presented evidence of neuropathy, which was confirmed by abnormal NCS, while 148 (61.7%) had normal NCS results. Taking NCS as the gold standard, stratum 1 yielded a sensitivity and specificity of 93.5% and 54.7%, respectively, while stratum 3 had higher specificity (96.6%) and lower sensitivity (34.8%) when compared to stratum 1. However, stratum 2 had the highest specificity (75.7%). The assessment of tendon reflexes can be proposed as a test for screening diabetic polyneuropathy.
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