gms | German Medical Science

Objectives/Interrogation: To discuss ultrasonic inspection methods and diagnostic indicators by multiple plane scanning and side-to-side comparing for unilateral peripheral nerve entrapment disease.

Methods: Unilateral carpal tunnel syndrome (CTS), cubital tunnel syndrome (CuTS) and radial nerve compression (RNC) patients have been selected as object in this study. The numbers of patients were seperately 15,34 and 13. First, CSASR (cross section area swelling rate) in multiple level was calculated by comparing cross section area of affected side and normal side. Second, the diagnose cut-off value of CSASR was used to diagnose CTS, CuTS, and RNC meanwhile therapy cut-off value to select therapy method. When the maximum value of CSASR was greater than therapy cut-off value, surgical treatment was selected for patients. When the maximum value of CSASR was between the two cut-off values, conservative treatment was selected for patients. At last, the most serious position was determined based on the location where the maximum CSASR value was calculated. The extent of disease was defined by the segment where the CSASR value was greater than diagnose cut-off value.

Results and Conclusions: Diagnose cut-off values of CTS, CuTS and RNC were separately 1.22,1.51 and 1.50. Therapy cut-off values were separately 1.48, 1.67 and 3.04.

The ultrasonic diagnostic method realized localization diagnosis and defined the extent of disease by multiple plane scanning,simultaneously, further decreased individual difference, intranerve difference, and internerve difference by side-to-side comparing. The accuracy and objectivity of ultrasonic diagnosis was greatly improved.