The Boston Carpal Tunnel Questionnaire Symptom Severity Scale (BCTQ-SSS) is a Carpal Tunnel Syndrome specific questionnaire that has been shown to be highly reproducible, internally consistent, valid, and responsive to clinical change in Carpal Tunnel Syndrome (CTS) and subject status post-carpal tunnel release (CTR). The BCTQ consists of 11 symptom severity questions (BCTQ-SSS). Scoring for the BCTQ- SSS ranges from 1 to 5, with higher scores indicating more severe symptoms, and is calculated as the mean of each response. The mean change scores in BCTQ-SSS from baseline to the 3-month follow-up are reported for each study group. Negative change scores indicate decreased symptom severity and positive change scores indicate increased symptom severity.

Boston Carpal Tunnel Questionnaire Symptom Severity Scale (BCTQ-SSS) change at 3 months

The Boston Carpal Tunnel Questionnaire Functional Status Scale (BCTQ-FSS) additionally consists of 8 functional status questions. Scoring for the BCTQ-FSS ranges from 1 to 5, with higher scores indicating more functional limitation, and is calculated as the mean of each response. The mean change scores in BCTQ-FSS from baseline to the 3-month follow-up are reported for each study group. Negative change scores indicate decreased functional limitation and positive change scores indicate increased functional limitation.

Boston Carpal Tunnel Questionnaire Functional Status Scale (BCTQ-FSS) change at 3 months

Participants with adverse events (AEs) occurring within 90 days of treatment and that are adjudicated as definitely related or probably related to the device or definitely related or probably related to the procedure will be included in this endpoint. The incidence of device- or procedure-related AEs within 90 days of treatment in each study group will represent an endpoint of the study.

Participants with Procedure and/or Device-Related Adjudicated Adverse Events

The Numeric Pain Scale measures pain severity. Scoring for the Numeric Pain Scale ranges from 0 (indicating no pain) to 10 (indicating worst pain possible). The mean change scores in the Numeric Pain Scale from baseline to the 3-month follow-up are reported for each study group. Negative change scores indicate decreased pain severity and positive change scores indicate increased pain severity.

Numeric Pain Scale change at 3 months

The EuroQol 5-Dimension 5-Level (EQ-5D-5L) is a generic preference-based questionnaire developed by the EuroQol Group to measure health-related quality of life. The EQ-5D-5L measures quality of life across 5 domains: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Each dimension is scored on a 5-level severity ranking consisting of: no problems, slight problems, moderate problems, severe problems, unable to/extreme problems. Scoring for the EQ-5D-5L ranges from -0.57 (indicating lowest quality of life) to 1.00 (indicating highest quality of life). The mean change scores in the EQ-5D-5L from baseline to the 3-month follow-up are reported for each study group. Negative change scores indicate decreased quality of life and positive change scores indicate increased quality of life.

EuroQol 5-Dimension 5-Level (EQ-5D-5L) change at 3 months

The time to return to work will be defined as the number of days between treatment and the time the subject reports returning to work in any capacity.

Time to return to work in days among employed subjects

The time to return to normal daily activities will be defined as the number of days between treatment and the time the subject reports returning to normal daily activities, irrespective of work status.

Participants who returned to normal daily activities within 3 days postoperatively