Microinvasive Carpal Tunnel Release Using a Retractable Needle-Mounted Blade

Early Return to Work after Carpal Tunnel Release with Ultrasound Guidance

Background

The duration of postoperative leave varies by the carpal tunnel release (CTR) technique. This study aimed to determine the time to return to work (RTW) after CTR with ultrasound (CTR-US) guidance and identify factors contributing to this duration.

Methods

This was a multicenter postmarket registry of patients treated with CTR-US. Time to RTW was analyzed with Kaplan-Meier methods. Logistic regression identified the association of patient, work, and procedural factors with the probability of RTW within 5 days (a standard work week) after CTR-US.

Results

A total of 544 employed patients (655 hands) from 24 centers were treated with CTR-US between November 2019 and August 2022. The mean patient age was 50 years, 62% were women, and most (76%) were full-time employees, where work activities were desk-based (49%), light manual (28%), or heavy manual (23%). The complication rate was 0.8%. After CTR-US, the median RTW was 3 days (interquartile range: 1-6 days), with 74.6% returning by 5 days, 87.8% by 10 days, and 97.1% by 30 days. Work activity (desk-based versus heavy manual: odds ratio = 2.93, 95% confidence interval: 1.70-5.04, P < 0.001) and sex (man versus woman: odds ratio = 1.85, 95% confidence interval: 1.15-2.98, P = 0.01) were associated with higher probability of RTW within 5 days. The median RTW ranged from 2 to 4 days in all patient subgroups, including heavy manual laborers (median 4 days) and women (median 3 days).

Conclusions

CTR-US offers an efficient approach to treating CTS, enabling most patients to RTW with minimal delay. The short recovery periods observed across diverse patient and work characteristic subgroups compare favorably to other CTR techniques.

Understanding the Learning Curve of Carpal Tunnel Release With Ultrasound Guidance: A Review

Carpal tunnel syndrome (CTS) is the most common compressive neuropathy and can be treated through carpal tunnel release (CTR) if nonoperative treatments fail. CTR can be performed through a variety of techniques, including traditional open, mini-open, endoscopic, and CTR with ultrasound guidance (CTR-US). The evidence on endoscopic CTR is mixed, due to a higher potential for nerve injury with endoscopic CTR compared to traditional open CTR. CTR-US offers the potential advantage of allowing the visualization of all key anatomical structures, combined with a very small incision and minimal soft tissue insult. As with any ultrasonographic technique or procedure, the learning curve needs to be considered for any provider considering adopting CTR-US. However, literature on ultrasound use around the wrist, including early evidence on the learning curve of CTR-US specifically, demonstrates this skill can be learned relatively quickly by providers with a wide range of prior experience in ultrasound and CTR. Overall, there is a need for high-quality studies comparing different CTR techniques, particularly CTR-US, as it offers the potential for considerable cost savings.

Ultrasound-Guided Interventions for Carpal Tunnel Syndrome: A Systematic Review and Meta-Analyses

Carpal tunnel syndrome (CTS) is the most common peripheral entrapment, and recently, ultrasound-guided perineural injection (UPIT) and percutaneous flexor retinaculum release (UPCTR) have been utilized to treat CTS. However, no systematic review or meta-analysis has included both intervention types of ultrasound-guided interventions for CTS. Therefore, we performed this review using four databases (i.e., PubMed, EMBASE, Scopus, and Cochrane) to evaluate the quality of evidence, effectiveness, and safety of the published studies on ultrasound-guided interventions in CTS. Among sixty studies selected for systemic review, 20 randomized treatment comparison or controlled studies were included in six meta-analyses. Steroid UPIT with ultrasound guidance outperformed that with landmark guidance. UPIT with higher-dose steroids outperformed that with lower-dose steroids. UPIT with 5% dextrose in water (D5W) outperformed control injection and hydrodissection with high-volume D5W was superior to that with low-volume D5W. UPIT with platelet-rich plasma outperformed various control treatments. UPCTR outperformed open surgery in terms of symptom improvement but not functional improvement. No serious adverse events were reported in the studies reviewed. The findings suggest that both UPIT and UPCTR may provide clinically important benefits and appear safe. Further treatment comparison studies are required to determine comparative therapeutic efficacy.

Ultrasound-guided percutaneous carpal tunnel release: A systematic review

OBJECTIVE

Carpal tunnel syndrome (CTS) is the most common peripheral entrapment mononeuropathy. The purpose of this systematic review is to evaluate the reported clinical effectiveness and safety of ultrasound-guided percutaneous carpal tunnel release (USCTR) for the treatment of CTS.

LITERATURE SURVEY

PubMed, EMBASE, and ScienceDirect databases were queried from database inception to February 20, 2021, to identify clinical studies on USCTR.

METHODOLOGY

Two reviewers independently completed title, abstract, and full-text screening, and they extracted data in duplicate for analysis. Procedure techniques, outcome measures, and complications were descriptively analyzed.

SYNTHESIS

Eighty-seven studies were eligible for screening. Twenty studies (three randomized controlled trials, three prospective cohort studies, and 14 case series) met inclusion criteria, with a total of 1772 USCTR cases. The overall level of evidence was very low, with seven studies with at least moderate risk of bias. Thirteen studies exceeded the minimal clinically important difference (MCID) for the Boston Carpal Tunnel Questionnaire Symptom Severity Scale (BCTQ-SS) and Boston Carpal Tunnel Questionnaire Functional Status Scale (BCTQ-FS), and six studies exceeded the MCID for the Quick Disabilities of Arm, Shoulder & Hand (QDASH). Five studies reported statistically significant improvement in these functional outcome measures as early as the first week post-procedure. A major complication occurred in one patient who developed suspected compartment syndrome, and minor complications were reported in 24 patients.

CONCLUSIONS

Based on very low level of evidence, early studies suggest that USCTR may be an effective treatment for CTS, with potential for short post-procedure recovery times.

Trial of ultrasound guided carpal tunnel release versus traditional open release (TUTOR)

BACKGROUND

Carpal tunnel release (CTR) is a surgical treatment option for patients with carpal tunnel syndrome (CTS) symptoms that are unresponsive to conservative treatment. Most patients experience symptomatic relief after CTR regardless of the surgical technique. However, direct comparisons of the safety and effectiveness between CTR surgical techniques are limited. The purpose of this randomized controlled trial is to compare the safety and effectiveness of CTR with ultrasound guidance (CTR-US) versus mini-open CTR (mOCTR) in subjects with symptomatic CTS.

DESIGN AND METHODS

TUTOR (Trial of Ultrasound guided CTR versus Traditional Open Release) is a randomized controlled trial in which 120 subjects at up to 12 sites in the United States will be randomized (2:1) to receive CTR-US or mOCTR. The primary endpoint of the study is the percentage of patients who return to normal daily activities within 3 days of the procedure. Secondary endpoints of the study are median time to return to normal daily activities, percentage of patients who return to work within 3 days of the procedure, median time to return to work, Boston Carpal Tunnel Questionnaire Symptom Severity Scale (BCTQ-SSS) change score at 3 months, BCTQ Functional Status Scale (BCTQ-FSS) change score at 3 months, Numeric Pain Scale change score at 3 months, EuroQoL-5 Dimension 5-Level (EQ-5D-5L) change score at 3 months, and the incidence of device- or procedure-related adverse events at 3 months. Patient follow-up in this trial will continue for 1 year.

ETHICS AND DISSEMINATION

This study was approved by a central institutional review board and ongoing trial oversight will be provided by a data safety monitoring board (DSMB). The authors intend to report the results of this trial at medical conferences and peer-reviewed journals. The outcomes of TUTOR will have important clinical and economic implications for all stakeholders involved in treating patients with CTS.

STUDY REGISTRATION

ClinicalTrials.gov (https://clinicaltrials.gov): NCT05405218.

LEVEL OF EVIDENCE

1.