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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03782558
Other study ID # JagiellonianU60
Secondary ID
Status Completed
Phase
First received
Last updated
Start date January 22, 2019
Est. completion date September 9, 2023

Study information

Verified date September 2023
Source Jagiellonian University
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Carpal tunnel syndrome is the most common compression neuropathy. The compression of the median nerve occurs in the carpal tunnel and results in pain and other unpleasant sensations in hand and wrist. In more advanced stage, weakness and wasting of the thenar and other muscles innervated by median nerve occurs, which may lead to permanent impairment of manual performance. The Boston carpal tunnel questionnaire (BCTQ) is one of the most commonly used tools for monitoring of the disease progression and of the effect of therapy. Originally created in English, it has been translated into many languages and subsequently validated. Recently the Polish version has been created and the purpose of this study is to validate it.


Description:

Carpal tunnel syndrome (CTS) is the most common compression neuropathy. The compression of the median nerve occurs in the carpal tunnel and results in pain and other unpleasant sensations in hand and wrist. In more advanced stage, weakness and wasting of the thenar and other muscles innervated by median nerve occurs, which may lead to permanent impairment of manual performance. The Boston carpal tunnel questionnaire (BCTQ) (Levine et al. 1993) is one of the most commonly used tools for monitoring of the disease progression and of the effect of therapy. It is a self administered questionnaire, which consists of two subscales, the Symptom severity scale and the Functional status scale. In the first one, the severity of particular symptoms is rated between none or never to very severe or continuous where appropriate. In the second one, the difficulties in performing several typical daily tasks, requiring manual activity is rated between "no difficulty" to "cannot perform activity at all due to hands and wrists symptoms". Originally created in English, it has been translated into many languages and subsequently validated. Recently the Polish version has been created (Polish version of the Boston Carpal Tunnel Questionnaire - pBCTQ) and the purpose of this study is to validate it. The translation from English to Polish has been independently made by two health professionals, native Polish speakers with good acquired knowledge of English. Next, both Polish versions were independently backward-translated to English, by two native English speakers with good acquired knowledge of Polish. Finally, all translators met together and all translations were presented to everyone of them. Possible mistakes in translations from original version into Polish, which might led to discrepancies between backwardly translated versions (from Polish to English) and the original version were discussed and the final version was created. The first step of the study on validation of the Polish version will be the pre-testing. In this step, pBCTQ will be administered to small sample of patients (ten in this study) and the investigators will interview in detail how these participants understand each question of the questionnaire. If pre-testing reveals that patients may understand any question differently from its meaning in the original version, final adjustments will be discussed among the translators and possibly introduced. The final pBCTQ will be administered before and after surgical treatment to the convenience group of 120 patients with electrodiagnostically confirmed CTS. Moreover, 30 randomly selected patients will be asked to fill out pBCTQ additionally, two weeks after first administration but before surgical treatment. Data from this subgroup will serve to assess the test-retest reliability. pBCTQ will be tested also regarding its consistency, validity and reactivity.


Recruitment information / eligibility

Status Completed
Enrollment 130
Est. completion date September 9, 2023
Est. primary completion date September 1, 2023
Accepts healthy volunteers No
Gender All
Age group 18 Years to 85 Years
Eligibility Inclusion Criteria: - Presence of at least one symptom within hand and / or wrist, from the following: paresthesias, sensory loss, tingling, burning sensation, impression of swelling. - Electrophysiologic confirmation of CTS, which will base on the abnormal latency difference in sensory or motor conduction between median and ulnar nerve or on sensory conduction slowing in median nerve, or on the prolongation of distal motor latency of the median nerve. (bilateral CTS will be included. pBCTQ will be filled out separately for each hand and the outcomes wil be measured separately for each hand). Exclusion Criteria: - Clinical signs or symptoms and /or electrophysiologic results indicative of more generalized peripheral neuropathy. - Presence of conditions, which may lead to the development of peripheral neuropathy such as diabetes, renal insufficiency, hypothyroidism or amyloidosis. - Presence of conditions, which may clinically resemble CTS, such as cervical radiculopathy or myelopathy or thoracic outlet syndrome

Study Design


Related Conditions & MeSH terms


Intervention

Procedure:
Surgical transection of transverse ligament
Standard therapy for CTS. An incision is made at the base of the palm of the hand. Then the transverse ligament is cut, which releases the compression of the median nerve and improves the symptoms.

Locations

Country Name City State
Poland Jagiellonian University Medical College Cracovia
Poland Krakowska Akademia Neurologii Centrum Neurologii Klinicznej Cracovia

Sponsors (2)

Lead Sponsor Collaborator
Jakub Antczak Centrum Neurologii Klinicznej Krakowska Akademia Neurologii

Country where clinical trial is conducted

Poland, 

References & Publications (2)

Levine DW, Simmons BP, Koris MJ, Daltroy LH, Hohl GG, Fossel AH, Katz JN. A self-administered questionnaire for the assessment of severity of symptoms and functional status in carpal tunnel syndrome. J Bone Joint Surg Am. 1993 Nov;75(11):1585-92. doi: 10.2106/00004623-199311000-00002. — View Citation

Padua L, LoMonaco M, Gregori B, Valente EM, Padua R, Tonali P. Neurophysiological classification and sensitivity in 500 carpal tunnel syndrome hands. Acta Neurol Scand. 1997 Oct;96(4):211-7. doi: 10.1111/j.1600-0404.1997.tb00271.x. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Internal Consistency Consistency between two subscales of pBCTQ (Symptom severity scale and Functional status scale) will be evaluated using Cronbach alfa test. Through study completion, an average of six months.
Primary Validity Validity will be tested by calculating the correlation of the subscore of each of two parts of the questionnaire with the electrophysiologic, six-grade severity level according to Padua et al. (1997). Through study completion, an average of six months.
Primary Reactivity: Correlation between changes in pBCTQ and electrophysiologic severity of CTS The reactivity will be evaluated as correlation between change in electrophysiologic severity level of CTS and changes in both pBCTQ subscales after treatment. Before treatment and then three months after surgical treatment of CTS
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