Carpal tunnel syndrome in patients with thyroid dysfunction: Ultrasonographic and electrophysiologic evaluation
Journal Title: Ege Tıp Dergisi - Year 2014, Vol 53, Issue 1
Abstract
Aim: Our objective was to evaluate the patients with thyroid dysfunction for carpal tunnel syndrome (CTS) with ultrasonography (US) and electrophysiologic tests and to investigate the prevalance of CTS in these patients. Materials and Methods: Seventy eight wrists in 40 patients with thyroid dysfunction (23 hypothyroid, 17 hyperthyroid) underwent US and electrodiagnostic tests. Fourty one wrists in 21 healthy volunteers constituted the control group. The echogenicity of the median nerve was evaluated and the cross-sectional area was measured at the level of distal radius (DRL) and the proximal carpal (os pisiforme) bones (PCL). A median nerve cross-sectional area over 10mm2 was accepted as compatible with CTS. The prevalance of CTS was calculated. Results: None of the controls were diagnosed with CTS. Eight wrists in 6 patients with thyroid dysfunction were diagnosed with CTS according to the cross-sectional area measured at DRL or PCL with US. The cross-sectional area of the median nerve at DRL on the right and left sides were 11.00 (± 1.82) mm2 and 9.75 (± 0.96) mm2 respectively. It was 13.00 (± 2.45) mm2 and 12.25 (± 2.63) mm2 at PCL. The median nerve was more homogenous and hypoechogenic in all patients with CTS. The prevalence of CTS was 21.7 % and 17.3 % with US and electrophysological tests respectively among hypothyroid patients and 5.9 % among hyperthyroid patients. Conclusion: Decreased echogenicity of the median nerve and higher cross sectional area can be detected with US in patients with CTS. Hypothyrodism is a prominent risk factor for CTS. US can be used for evaluating risk groups.
Authors and Affiliations
T Uğur, G Demirpolat, D Tuncel, M Özkaya
Keywords
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- EP ID EP344837
- DOI 10.19161/etd.344035
- Views 98
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