RESUMO
The Levine questionnaire is commonly used to assess the treatment outcomes of carpal tunnel syndrome (CTS). However, specific items in this questionnaire do not address symptoms or impairment in each hand separately. One concern is that patients with unilateral disease would experience greater improvement as a result of surgery than those with bilateral who have only one hand treated. The objective of this study was to compare the early outcomes of surgery for unilateral and bilateral CTS, after operation on only one hand, in order to determine if the disease in the untreated hand affects the subjective perception of treatment outcomes. A total of 372 patients, 186 with unilateral and 186 with bilateral CTS underwent minimally invasive carpal tunnel release under local anesthesia. None of the patients with bilateral CTS had the other hand operated on before the follow-up examination. The pre- and post-operative (at 3 months) measurements included subjective pain intensity in numeric rating scale and the Levine questionnaire. No statistically significant differences in declared pain intensity, as well as in the Levine symptom and function scores in patients with unilateral or bilateral CTS were noted. This suggests that subjective perception of the improvement experienced by patients as a result of surgery was independent of involvement of one or both of the patients' hands.
