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Year : 2015  |  Volume : 4  |  Issue : 1  |  Page : 73

'Cuff Sign' a new maneuver for decision-making in patients with carpal tunnel syndrome

1 Department of Neurology, Isfahan University of Medical Sciences, Isfahan, Iran
2 Department of Neurosurgery, Isfahan University of Medical Sciences, Isfahan, Iran
3 Department of Neurology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
4 Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

Correspondence Address:
Keivan Basiri
Medical School, Isfahan Neurosciences Research Center, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2277-9175.153898

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Background: Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy that results from compression of the median nerve within the carpal tunnel. In most patients, the diagnosis can be proposed based on patient history and clinical symptoms, with physical findings being attributed only in more severely affected patients. The purpose of this study is to introduce a reliable and accurate method for the proper selection of patients with mild carpal tunnel syndrome (CTS), for surgery. Materials and Methods: Electerodiagnostic studies are performed before and after placement of the cuff of the sphygmomanometer at the arm (Cuff sign), at a mean arterial pressure, for three minutes. Thirty symptomatic patients with mild findings on electrodiagnostic studies and 49 asymptomatic control hands have been included. Results: Fifteen patients reported good pain relief on the first postoperative day (50%), which increased to 21 on the fouteenth postoperative day (70%). The sensory latency changes were significantly higher in the pain relief group, both on the first and fourteenth postoperative days. Conclusion: Considering the fact that cooperation of the patients is not necessary and the double effects of direct pressure and ischemia over the proximal parts of the median nerve leads to prolonged latencies, this test is a useful method for decision-making in patients with severe symptoms of CTS, despite the mild electrodiagnostic findings.

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