Identification of Clinical and Demographic Predictors for Treatment Modality in Patients With Carpal Tunnel Syndrome

An Analysis of Treatment Choices among White and African American Medicaid Patients with Carpal Tunnel Syndrome

BACKGROUND

Carpal tunnel syndrome (CTS) is the most common compressive neuropathy and has severe long-term effects on hand function if surgery is delayed significantly following diagnosis. The authors investigated the timespan between diagnosis and surgical intervention for carpal tunnel syndrome among African American and White patients on Medicaid.

METHODS

Using the MarketScan Truven Database Medicaid Supplement 2009 to 2020, the authors identified patients with CTS. Demographic data and time intervals between diagnosis and treatment were collected and analyzed using chi-square test and regression models.

RESULTS

A total of 361,942 African American and White Medicaid patients with a diagnosis of CTS were included in the study. Overall, 21.4% of White patients compared with 13.6% of African American patients chose surgery as their first and only option ( P < 0.001). A greater proportion of White patients underwent surgery less than 6 months after diagnosis compared with African Americans (75.5% and 67.7%, respectively; P < 0.001). African American women underwent surgery at a significantly lower rate compared with White women (13.8% and 21.8%, respectively); P < 0.001). Despite the increase in rates of surgery among both groups, the gap in use of surgery widened from a 6.6% difference in 2009 to a difference of 9.5% in 2020 between racial groups.

CONCLUSIONS

African American race and female sex are significantly correlated with choice of treatment and time to surgery among Medicaid patients with CTS. Identification of the relationship between health care disparities and the decision to undergo surgery is the first step in the development of strategies to mitigate underuse of this quality-of-life-improving procedure.

Revision Carpal Tunnel Release Following Endoscopic Compared With Open Decompression

Importance

Carpal tunnel release (CTR) technique may influence the likelihood of revision surgery. Prior studies of revision CTR following endoscopic CTR (ECTR) compared with open CTR (OCTR) have been limited by sample size and duration of follow-up.

Objective

To estimate the incidence of revision CTR following ECTR compared with OCTR in a national cohort.

Design, Setting, and Participants

This retrospective cohort study used data from the US Veterans Health Administration. Participants included all adults (age ≥18 years) undergoing at least 1 outpatient CTR from October 1, 1999, to May 20, 2021. Data were analyzed from May 21, 2021, to November 27, 2023.

Exposure

Index CTR technique.

Main Outcomes and Measures

The primary outcome was time to revision CTR, defined as repeat ipsilateral CTR during the study period. Secondary outcomes were indications for revision, findings during revision, and additional procedures performed during revision.

Results

Among 134 851 wrists from 103 455 patients (92 510 [89.4%] male; median [IQR] age, 62 [53-70] years) undergoing at least 1 CTR, 1809 wrists underwent at least 1 revision at a median (IQR) of 2.5 (1.0-3.8) years. In competing-risks analysis, the cumulative incidence of revision was 1.06% (95% CI, 0.99%-1.12%) at 5 years and 1.59% (95% CI, 1.51%-1.67%) at 10 years. ECTR was associated with increased hazard of revision CTR compared with OCTR (adjusted hazard ratio [aHR], 1.56; 95% CI, 1.34-1.81; P < .001). The risk difference for revision CTR associated with ECTR compared with OCTR was 0.57% (95% CI, 0.31%-0.84%) at 5 years (number needed to harm, 176) and 0.72% (95% CI, 0.36%-1.07%) at 10 years (number needed to harm, 139). Regardless of index CTR technique, the most common indication for revision was symptom recurrence (1062 wrists [58.7%]). A reconstituted transverse carpal ligament (TCL) was more common after ECTR compared with OCTR, whereas scarring of the overlying tissues and of the median nerve itself were more common following OCTR. Incomplete transverse-carpal-ligament release was observed in 251 of the wrists undergoing revision CTR (13.94%) and was more common among revisions following ECTR (odds ratio, 1.62; 95% CI, 1.11-2.37; P = .01).

Conclusions and Relevance

In this cohort study of revision CTR in the Veterans Health Administration, ECTR was associated with increased risk of revision compared with OCTR, but the absolute risk was low regardless of technique. Intraoperative findings at revision varied significantly according to index CTR technique.