Evidence-Based Medicine: Current Evidence in the Diagnosis and Management of Carpal Tunnel Syndrome

A 15-Year Review of Clinical Practice Patterns in Carpal Tunnel Syndrome Based on Continuous Certification by the American Board of Plastic Surgery

BACKGROUND

The American Board of Plastic Surgery has been collecting practice data on carpal tunnel syndrome treatment since 2004 as part of its Continuous Certification Program. These data allow plastic surgeons to compare their surgical experience to national trends and analyze those trends in relation to current evidence-based medicine.

METHODS

Data on carpal tunnel syndrome treatment from 2004 to 2014 were compared to those from 2015 to 2020. National practice trends observed in these data were evaluated relative to current literature regarding evidence-based practices.

RESULTS

A total of 11,090 carpal tunnel syndrome cases were included from 2004 to 2020. Electrodiagnostic and imaging studies were performed on most patients despite adding little sensitivity and specificity when physical examination tests are performed and not being considered cost-effective. An open "mini" approach has remained the most common surgical technique in carpal tunnel release for the last 15 years, with growing usage (53 percent versus 59 percent, p < 0.001). Splinting has decreased significantly over the last 15 years, from usage in 39 percent of patients to 28 percent (p < 0.001). Formal postoperative hand therapy has declined from 27 percent of patients to 22 percent (p < 0.001). Despite their low efficacy, 63 percent of patients received one or more perioperative doses of antibiotics.

CONCLUSIONS

Analysis of the Continuous Certification Program tracer data from the American Board of Plastic Surgery provides an excellent overview of current practice and its development over the 15 years since its inception. This analysis provides insight into how effectively plastic surgeons have remained aligned with developments in best practices in treating carpal tunnel syndrome.

Additional Treatment after Collagenase Injections and Needle Fasciotomy for Dupuytren's Disease: A Retrospective Cohort Study

Introduction  The aim of this study was to assess the rate of additional treatment after collagenase injection and needle fasciotomy, and what factors are associated with additional procedures for recurrence. Materials and Methods  We retrospectively identified 201 adult patients who underwent collagenase injection and 19 patients who underwent needle fasciotomy for Dupuytren's disease from 2012 to 2014. Outcomes included additional treatment of the same ray for either recurrence or persistence of contracture. To evaluate associated factors, we performed a bivariate analysis. Results  Additional treatment after collagenase injection for recurrence was performed in 24% of fingers at a median of 23 months (interquartile range [IQR]: 10.8-36.1) and was associated with bilateral disease ( p = 0.008). Additional treatment for persistence was performed in 5.6% at a median of 1.9 months (IQR: 1.1-3.2). Additional treatment for recurrence after needle fasciotomy was performed in 13% of fingers at a median of 28.2 months (IQR: 27.5-28.2) and 4.2% for persistence at 1.1 months. Fingers treated with needle fasciotomy were more likely to undergo secondary open fasciectomy (13% vs. 5.1%, p = 0.022). Conclusion  Additional treatment after collagenase injections was performed in 29% of fingers, mostly another collagenase injection, and was associated with bilateral disease. After needle fasciotomy, 17% of patients underwent additional treatment, primarily open partial fasciectomy.

A Systematic Review of Randomised Control Trials Evaluating the Efficacy and Safety of Open and Endoscopic Carpal Tunnel Release

INTRODUCTION

Carpal tunnel syndrome is the most prevalent form of nerve compression syndrome of the upper limb; therefore, it is of clinical significance to critique treatment methods. There is an ongoing debate amongst clinicians as to which surgical method-open or endoscopic carpal tunnel release-provides better overall symptom relief and faster recovery time. This systematic review aimed to investigate the evidence from randomised control trials to evaluate the effectiveness and safety of open and endoscopic carpal tunnel release surgery.

METHODS

Database searches were carried out to identify literature. An inclusion and exclusion criteria was applied to only include randomised control trials which compared open and endoscopic surgery. Publications were then selected according to PRISMA guidelines, risk of bias was assessed and patient outcome was assessed.

RESULTS

Twenty-three studies were selected for this systematic review. It was found that for improvement to grip strength and symptom severity, the endoscopic group had more significant improvement in the short term, resulting in a quicker return to work time compared to the open group. The complication rate for both intervention groups was low despite more severe and irreversible complications such as prolonged pain and wound infections being observed in the open group; however, the endoscopic group reported a higher risk of needing repeat surgery.

CONCLUSION

The quicker recovery time, improved cosmetic result and less severe complications observed with the endoscopic technique suggest that it should be used more often. However, this review found no convincing evidence of a significantly superior technique in the long term.

Risk Factors of Carpal Tunnel Syndrome in Taiwan: A Population-Based Cohort Study

BACKGROUND

Carpal tunnel syndrome (CTS), 1 of the most common peripheral neuropathies of the upper extremity, has been studied for decades regarding its epidemiology and associated medical conditions. We conducted a large-scale, age- and gender-matched study from an Asian population database to investigate the relationship between the incidence and the demographic characteristics.

METHODS

A retrospective cohort study using data of National Health Insurance Research Database was conducted. One million enrollees in Taiwan was used to identify 9442 patients with CTS and 37,768 randomly selected controls, in a control-case ratio of 4:1. Diagnoses of CTS were ascertained from January 1, 2003, to December 31, 2012. Sociodemographic and medical characteristics were evaluated to assess the correlation with CTS.

RESULTS

Annual incidence of CTS was approximately 0.4% during the 10-year-period in Taiwan, with higher incidence rate in female sex and middle age of group (50-59 years). Among the medical conditions, previous wrist injuries, obesity, gout, and rheumatoid arthritis were associated with CTS most significantly.

CONCLUSIONS

Carpal tunnel syndrome has presented a relatively constant incidence in Taiwan. Female gender with middle age seemed to have the highest incident rate during a 10-year period from 2003 to 2012. Among the risk factors of CTS, previous wrist injuries, obesity, gout, and rheumatoid arthritis were demonstrated to be the most significantly correlated comorbidities.

Non-operative Treatment of Carpal Tunnel Syndrome

PURPOSE OF REVIEW

To determine the current evidence for various non-operative therapies in the treatment of carpal tunnel syndrome RECENT FINDINGS: Multiple non-operative treatment modalities exist in the treatment of mild to moderate carpal tunnel syndrome. While certain modalities such as splinting and corticosteroid injections have moderate- to high-quality evidence to support use, other less commonly used treatments have fewer therapeutic indications in the current literature. Healthcare providers should be able to initiate the appropriate diagnostic evaluation and assess the utility of non-operative therapies in the treatment of carpal tunnel syndrome. Moreover, healthcare providers should also be able to understand the evidence behind each treatment and the indications for surgical intervention.

A Comparative Multimetric Assessment of English and Spanish Carpal Tunnel Syndrome Materials

BACKGROUND

Spanish-speaking Hispanics living in the United States utilize the internet as a primary means to obtain health information. Accurate, accessible information is important for English speakers; however, it could have even greater utility for Spanish speakers who have lower health literacy levels. The aim of this study was to evaluate and compare online English and Spanish carpal tunnel surgery materials provided by using a multimetric approach.

MATERIALS AND METHODS

A web search using the English term "carpal tunnel surgery" was performed. The first 10 institutional/organizational websites that provided carpal tunnel surgery information in English and Spanish were included. All relevant online materials were evaluated using the Patient Education and Materials Assessment Tool (PEMAT), Cultural Sensitivity Assessment Tool (CSAT), and Simplified Measure of Gobbledygook, Spanish (SOL) to assess understandability and actionability, cultural sensitivity, and readability, respectively.

RESULTS

There were no statistically significant differences in understandability or actionability scores between Spanish and English materials. Average cultural sensitivity scores for Spanish materials were significantly lower than English materials (P = 0.015). The average reading grade level of online English materials was greater than that for Spanish materials (P = 0.011). Both mean values were above the recommended sixth-grade reading level.

CONCLUSIONS

Online patient-directed information regarding carpal tunnel surgery exceeded the recommended reading grade level for both English and Spanish-speaking populations. Most Spanish materials were often direct translations and were not contoured to the elevated literacy needs of this demographic. Institutions must caution their authors to tailor their web material in a way that is sensitive to their target population to optimize understanding.

Optimal parameters and location for diffusion tensor imaging in the diagnosis of carpal tunnel syndrome: a meta-analysis

AIM

To assess the diagnostic value of the apparent diffusion coefficient (ADC) and fractional anisotropy (FA) of diffusion tensor imaging (DTI) at several anatomical locations in patients with carpal tunnel syndrome (CTS) to explore the optimal parameters and measurement location.

MATERIALS AND METHODS

A search was conducted using the PubMed, EBSCO, Ovid, Web of Science, and Cochrane databases to identify articles relevant to this study published before September 2017. Studies were selected and included according to strict eligibility criteria. Mean differences (MD) and 95% confidence intervals (CIs) were used to compare FA and ADC values between CTS patients and healthy subjects. Potential publication bias was investigated.

RESULTS

Eleven studies involving 349 CTS wrists and 278 controls were selected for the meta-analysis. A notable MD: was found for lowered FA at the level of the pisiform bone for CTS versus controls (MD: -0.11, 95% confidence interval [CI]: -1.14 to -0.07, z=5.83, p<0.001). A higher ADC was found at the pisiform bone and hamate bone levels for CTS versus controls (P: MD: 0.15, 95% CI: 0.10 to 0.20, z=5.98, p<0.001, H: MD: 0.15; 95% CI: 0.09 to 0.21, z=4.67, p<0.001).

CONCLUSIONS

The meta-analysis demonstrated a significant FA reduction and ADC increase in CTS patients. This result supports the use of DTI parameters in differentiating CTS patients from health subjects. The anatomical site for FA at the pisiform and ADC at the pisiform and hamate levels were more accessible than other sites for the diagnosis of CTS patients.

Scratch Collapse Test for Carpal Tunnel Syndrome: A Systematic Review and Meta-analysis

Background:

Despite the fact that carpal tunnel syndrome (CTS) is the most common entrapment neuropathy, the diagnostic accuracy of clinical screening examinations for CTS is controversial. The scratch collapse test (SCT) is a novel test that may be of diagnostic advantage. The purpose of our study was to determine the diagnostic accuracy of the SCT for CTS.

Methods:

A literature search was performed using PubMed (1966 to April 2018); Ovid MEDLINE (1966 to April 2018); EMBASE (1988 to April 2018); and Cochrane Central Register of Controlled Trials (The Cochrane Library, to April 2018). We examined the studies for the pooled sensitivity, specificity, and likelihood ratios of the SCT. This review has been registered with PROSPERO (CRD42018077115).

Results:

The literature search generated 13 unique articles. Seven articles were included for full text screening and 3 articles met our inclusion criteria, all of which were level II evidence with low risk of bias (165 patients). Pooled sensitivities, specificities, positive likelihood ratio, and negative likelihood ratios were 0.32 [95% CI (0.24–0.41)], 0.62 [95% CI (0.45–0.78)], 0.75 [95% CI (0.33–1.67)], and 1.03 [95% CI (0.61–1.74)], respectively. The calculated area under the summary receiver operating characteristic (AUSROC) curve was 0.25, indicating a low diagnostic accuracy.

Conclusion:

The SCT has poor sensitivity; however, it is moderately specific. Based on the current literature and their variable quality of the evidence, we conclude that the SCT is not an adequate screening test for detecting CTS.

Carpal Tunnel Syndrome: Making Evidence-Based Treatment Decisions

Carpal tunnel syndrome (CTS) is one of the most common musculoskeletal disorders of the upper extremity. Comorbidities associated with the development of CTS include diabetes and obesity. Although a high rate of repetitive hand/wrist motions is a risk factor, there is insufficient evidence to implicate computer use in the development of CTS. Initial treatment generally is nonoperative, with the strongest evidence supporting bracing/splinting. Strong evidence supports operative treatment, regardless of technique, as superior to nonoperative treatment. Complications are infrequent and most are minor and transient.