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ORIGINAL ARTICLE
Year : 2012  |  Volume : 39  |  Issue : 3  |  Page : 124-129

Carpal tunnel syndrome: Assessment of correlation between clinical, neurophysiological and ultrasound characteristics


1 Department of Neurology, J.N. Medical College, Nehru Nagar, Belgaum, Karnataka, India
2 Department of Radiology, J.N. Medical College, Nehru Nagar, Belgaum, Karnataka, India

Correspondence Address:
B Hemeshwar Rao
Department of Neurology, J.N. Medical College, Nehru Nagar, Belgaum - 590 010, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-5009.105914

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Objectives: To evaluate the relationship between symptoms, clinical severity, neurophysiological characteristics with median nerve cross-sectional area (CSA) at the level of carpal tunnel inlet at ultrasonography (USG) and its utility in diagnosis of carpal tunnel syndrome (CTS). Materials and Methods: Prospective study of 30 patients with symptoms of CTS, attending to the Neurology out patient department (OPD) at University Teaching Hospital. A multidimensional assessment of CTS was done using historic and objective scale (Hi-Ob scale) for clinical severity, Boston carpal tunnel questionnaire (BCTQ) for patient-oriented measures, neuro physiologic studies of median nerve at wrist and USG to measure median nerve CSA at carpal tunnel inlet. Results: Thirty patients included in the study (22 women and 8 men). Mean of CSA was 12.69 mm 2 (SD2.67). Association between BCTQ score value and inlet values was assessed by Karl Pearson correlation coefficient ( r = 0.376, P = 0.04). There was positive association with BCTQ scores and CSA of median nerve at carpal tunnel inlet. To compare clinical severity scale (Hi-Ob) and USG CSA, analysis of variance was performed (F value) and Scheffe's multiple comparison test was used to find group difference (grades 1 and 2 P < 0.001, grades1 and 2P P < 0.001, grade 2 differs with grade 2P P < 0.006). As the number of patients is less in minimal, mild and severe groups, the difference between neurophysiological groups and mean of CSA was not statistically significant. Conclusion: A positive correlation exists between USG findings and all the conventional measures of CTS severity.


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