| Ultrasonographic Findings of Mild and Very Mild Carpal Tunnel Syndrome. |
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Park, Gi young , Bae, Jung ho , Lee, So young , Oh, Jeong seob , Lim, Jeong Geun , Son, Dae Gu |
1Department of Rehabilitation Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea.
2Department of Rehabilitation Medicine, Keimyung University School of Medicine, Daegu, Korea. re@dsmc.or.kr
3Department of Neurology, Keimyung University School of Medicine, Daegu, Korea.
4Department of Plastic Surgery, Keimyung University School of Medicine, Daegu, Korea. |
| 경도와 초경도 수근관 증후군 환자의 초음파 검사 소견 |
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박기영, 배정호1, 이소영1, 오정섭1, 임정근2, 손대구3 |
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대구가톨릭대학교 의과대학 재활의학교실, 1계명대학교 의과대학 재활의학교실, 2신경과학교실, 3성형외과학교실 |
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| Abstract |
Objective
To assess the clinical usefulness of ultrasonography for the diagnosis of mild and very mild carpal tunnel syndrome.
Method
Ultrasonographic evaluation was performed in 39 hands of 29 patients with mild and very mild carpal tunnel syndrome according to Bland's neurophysiologic grading scale. Controls included 41 hands of 34 subjects without electrophysiologic evidence of carpal tunnel syndrome. Ultrasonographic findings were evaluated quantitatively with regard to the cross-sectional area, the flattening ratio, the swelling ratio of the median nerve, and palmar displacement of the flexor retinaculum. The analysis of differences between controls and patients group were done by independent t-test. Cut-off values using receiver operation characteristic, were calculated.
Results
Patients had significantly increased cross sectional area and flattening ratio of the median nerve at proximal carpal area, palmar displacement of the flexor retinaculum at proximal carpal area. A critical value of equal or higher to 8.5 mm2 for cross-sectional area at the pisiform level showed a sensitivity 79.5%, a specificity of 95.1%, which had most diagnostic value compared with the value of cross-sectional area at the distal radius level, flattening ratio at the pisiform level and palmar displacement.
Conclusion
Ultrasonography was useful in the diagnosis of mild and very mild carpal tunnel syndrome. (J Korean Acad Rehab Med 2008; 32: 67-72) |
| Key Words:
Carpal tunnel syndrome, Ultrasonography, Median nerve |
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