scholarly journals Mathematical Modeling for Neuropathic Pain: Bayesian Linear Regression and Self-Organizing Maps Applied to Carpal Tunnel Syndrome

Symmetry ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 1581
Author(s):  
Oscar J. Pellicer-Valero ◽  
José D. Martín-Guerrero ◽  
Margarita I. Cigarán-Méndez ◽  
Carmen Écija-Gallardo ◽  
César Fernández-de-las-Peñas ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Neuropathic Pain ◽  
Carpal Tunnel Syndrome ◽  
Pain Intensity ◽  
Carpal Tunnel ◽  
Symptom Severity ◽  
Grip Force ◽  
Self Organizing Maps ◽  
Tunnel Syndrome ◽  
And Function

A better understanding of the connection between risk factors associated with pain and function may assist therapists in optimizing therapeutic programs. This study applied mathematical modeling to analyze the relationship of psychological, psychophysical, and motor variables with pain, function, and symptom severity using Bayesian linear regressions (BLR) and self-organizing maps (SOMs) in carpal tunnel syndrome (CTS). The novelty of this work was a transfer of the symmetry mathematical background to a neuropathic pain condition, whose symptoms can be either unilateral or bilateral. Duration of symptoms, pain intensity, function, symptom severity, depressive levels, pinch tip grip force, and pressure pain thresholds (PPTs) over the ulnar, radial, and median nerve trunks, the cervical spine, the carpal tunnel, and the tibialis anterior were collected in 208 women suffering from CTS. The first BLR model revealed that symptom severity, PPTs over the radial nerve, and function had significant correlations with pain intensity. The second BLR showed that symptom severity, depressive levels, pain intensity, and years with pain were associated with function. The third model demonstrated that pain intensity and function were associated with symptom severity. The SOMs visualized these correlations among variables, i.e., clinical, psychophysical, and physical, and identified a subgroup of women with CTS exhibiting worse clinical features, higher pressure sensitivity, and lower pinch tip grip force. Therefore, the application of mathematical modeling identified some interactions among the intensity of pain, function, and symptom severity in women with CTS.

scholarly journals Function of Microscopic Carpal Tunnel Release in Cases Resistant to Conservative Therapy

2021 ◽  
Vol 6 (4) ◽  
pp. 89-96
Author(s):  
Jehan Zeb ◽  
Muhammad Ullah ◽  
Muhammad Shoaib ◽  
Syed Shah ◽  
Walayat Shah ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Conservative Treatment ◽  
Carpal Tunnel ◽  
Symptom Severity ◽  
Carpal Tunnel Release ◽  
P Value ◽  
Symptom Severity Score ◽  
Tunnel Syndrome ◽  
The Mean ◽  
And Function

Purpose: To determine the outcome of microscopic carpal tunnel release in patients with carpal tunnel syndrome who failed to respond to conservative treatment. Methodology: This descriptive case series was carried at Department of Neurosurgery, D.H.Q Hosptial Charsadda over 1 year from Jan 2019 to Dec 2020, indicate the sampling method used to select the study participants involving 94 patients; both men and women with ages in the range 30-70 years diagnosed of carpal tunnel syndrome who failed to respond to conservative treatment and were planned for surgical release. Microscopic CTS release was performed and outcomes were assessed in terms of improvement in VAS score for wrist pain, symptom severity score and function status scale 3 and 6 months after the surgery. Recurrence of symptoms was also noted. A written informed consent was obtained from every patient. Indicate the method of data collection and data analysis Findings: The mean age of the patients with carpal tunnel syndrome was 41.6±7.9 years. There was slight female predominance with male to female ratio of 1:2.1. History of diabetes was recorded in 29 (31.0%) patients while 34 (37.0%) patients were obese. Right hand was more frequently involved (53.0%) than the left hand (47.0%). The mean VAS score for wrist pain reduced from 7.9±1.2 at baseline to 1.8±0.7 3 months after the surgery (p- value<0.001). Similar improvements were also noted in symptom severity score (3.8±0.8 to 1.6±0.8; p- value<0.001) and function status scale (2.7±0.8 to 1.5±0.8; p-value<0.001) at the end of 3 months after the surgery. Recurrence was not observed in any patient at the end of 6 months follow-up. Recommendation: Microscopic carpal tunnel release was found to relieve patient’s symptoms and improve wrist function yet with minimal scarring and without recurrence which advocates its preferred use in future practice provided necessary surgical skills and hardware are available.

Ultra-micronized Palmitoylethanolamide Effects on Sleep-wake Rhythm and Neuropathic Pain Phenotypes in Patients with Carpal Tunnel Syndrome: An Open-label, Randomized Controlled Study

2018 ◽  
Vol 17 (4) ◽  
pp. 291-298 ◽  
Author(s):  
Maurizio Evangelista ◽  
Cilli ◽  
R. De Vitis ◽  
A. Militerno ◽  
F. Fanfani
Keyword(s):  
Neuropathic Pain ◽  
Carpal Tunnel Syndrome ◽  
Sleep Quality ◽  
Pain Intensity ◽  
Sleep Disorders ◽  
Carpal Tunnel ◽  
Secondary Outcome ◽  
Controlled Study ◽  
Tunnel Syndrome ◽  
Ultramicronized Palmitoylethanolamide

Background: Patients with carpal tunnel syndrome often suffer from fragmentary sleep. This study was designed to assess the effectiveness of treatment with ultramicronized palmitoylethanolamide in reducing pain intensity and improving quality of sleep in patients with neuropathic pain due to carpal tunnel syndrome. Methods: An open, controlled study was conducted on 42 patients awaiting carpal tunnel syndrome surgery, suffering from sleep disorders and painful symptoms and randomized into two groups. One group received ultramicronized palmitoylethanolamide (600 mg twice daily) during the pre- and postsurgery periods, while the other group did not receive any treatment except surgical therapy. The primary outcome measure was sleep quality assessment by the Pittsburgh Sleep Quality Index, with secondary outcome as painful symptomatology intensity evaluated by the Numeric Rating Scale. Results: At the end of the pre-surgery period (T1) there was a highly significant improvement (p<0.0001) in overall sleep quality with an increase of continuous sleep time and a reduction of sleep latency and disturbances as well as a significant mitigation (p<0.0001) of painful symptoms in favor of the treated group. Conclusion: Disturbed sleep patterns are very common in patients suffering from neuropathic pain due to carpal tunnel syndrome. Our results, albeit preliminary, suggest that ultramicronized palmitoylethanolamide administration favors a clear improvement of sleep quality, confirming a correlation between sleep disorders and pain intensity.

scholarly journals Spectral Clustering Reveals Different Profiles of Central Sensitization in Women with Carpal Tunnel Syndrome

Symmetry ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1042
Author(s):  
Oscar J. Pellicer-Valero ◽  
José D. Martín-Guerrero ◽  
César Fernández-de-las-Peñas ◽  
Ana I. De-la-Llave-Rincón ◽  
Jorge Rodríguez-Jiménez ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Clinical Features ◽  
Carpal Tunnel ◽  
Spectral Clustering ◽  
Grip Force ◽  
The Other ◽  
Pressure Pain ◽  
Thermal Pain ◽  
Pressure Pain Thresholds ◽  
Tunnel Syndrome

Identification of subgroups of patients with chronic pain provides meaningful insights into the characteristics of a specific population, helping to identify individuals at risk of chronification and to determine appropriate therapeutic strategies. This paper proposes the use of spectral clustering (SC) to distinguish subgroups (clusters) of individuals with carpal tunnel syndrome (CTS), making use of the obtained patient profiling to argue about potential management implications. SC is a powerful algorithm that builds a similarity graph among the data points (the patients), and tries to find the subsets of points that are strongly connected among themselves, but weakly connected to others. It was chosen due to its advantages with respect to other simpler clustering techniques, such as k-means, and the fact that it has been successfully applied to similar problems. Clinical (age, duration of symptoms, pain intensity, function, and symptom severity), psycho-physical (pressure pain thresholds—PPTs—over the three main nerve trunks of the upper extremity, cervical spine, carpal tunnel, and tibialis anterior), psychological (depressive levels), and motor (pinch tip grip force) variables were collected in 208 women with clinical/electromyographic diagnosis of CTS, whose symptoms usually started unilaterally but eventually evolved into bilateral symmetry. SC was used to identify clusters of patients without any previous assumptions, yielding three clusters. Patients in cluster 1 exhibited worse clinical features, higher widespread pressure pain hyperalgesia, higher depressive levels, and lower pinch tip grip force than the other two. Patients in cluster 2 showed higher generalized thermal pain hyperalgesia than the other two. Cluster 0 showed less hypersensitivity to pressure and thermal pain, less severe clinical features, and more normal motor output (tip grip force). The presence of subgroups of individuals with different altered nociceptive processing (one group being more sensitive to pressure pain and another group more sensitive to thermal pain) could lead to different therapeutic programs.

scholarly journals Clinical Utility of the 6-Item CTS, Boston-CTS, and Hand-Diagram for Carpal Tunnel Syndrome

2021 ◽  
Vol 12 ◽  
Author(s):  
Daniel Gregor Schulze ◽  
Kristian Bernhard Nilsen ◽  
Rikke Munk Killingmo ◽  
John Anker Zwart ◽  
Margreth Grotle
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Construct Validity ◽  
Internal Consistency ◽  
Carpal Tunnel ◽  
Symptom Severity ◽  
Clinical Utility ◽  
Severity Assessment ◽  
Discriminative Ability ◽  
Tunnel Syndrome ◽  
Severity Levels

Background: Self-reported measures are often used in research and clinical practice to diagnose carpal tunnel syndrome (CTS) and guide therapeutic choices. We aimed to assess the clinical utility of the Norwegian versions of two self-reported outcome measures for symptom severity assessment, the 6-item CTS (CTS-6), and Boston-CTS (BCTQ), and of one diagnostic measure, the hand-diagram, by evaluating measurement properties including discriminative ability for severity assessment (CTS-6, BCTQ), and diagnosis of CTS (hand-diagram).Methods: We performed forward and backward translation and cultural adaptation of the Norwegian CTS-6 and BCTQ. Following COSMIN guidelines, we investigated internal consistency, reliability, construct validity, and discriminative ability for distinguishing between severity levels of CTS in patients with confirmed CTS for the CTS-6 and BCTQ and reliability and discriminative ability for diagnosing CTS for the hand-diagram.Results: Two hundred and fifty-one patients referred for diagnostic work-up for CTS with nerve conduction studies (NCS) participated. The CTS-6 and BCTQ had acceptable internal consistency (Crohnbach's α = 0.82 and 0.86, respectively), reliability (ICC = 0.86 and 0.90; SEM = 0.24 and 0.20; SDC95% = 0.68 and 0.55, respectively), construct validity (all eight pre-defined hypotheses confirmed) and discriminative ability to distinguish between severity levels of CTS [Area under the curve (AUC) = 0.75, 95% CI 0.64–0.85]. The hand-diagram had acceptable reliability (Cohen's kappa = 0.69) and discriminative ability to diagnose CTS (sensitivity = 0.72, specificity = 0.90).Conclusion: Our findings support the clinical utility of the CTS-6 and BCTQ for symptom severity assessment and of the hand-diagram for diagnostic screening.

Psychological Status Is Associated With Symptom Severity in Patients With Carpal Tunnel Syndrome

2018 ◽  
Vol 43 (5) ◽  
pp. 484.e1-484.e8 ◽  
Author(s):  
Young Ho Shin ◽  
Jun O Yoon ◽  
You Keun Kim ◽  
Jae Kwang Kim
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Symptom Severity ◽  
Psychological Status ◽  
Tunnel Syndrome

An analysis of patient’s and disease related factors predictive of the outcomes of surgery for carpal tunnel syndrome

2020 ◽  
Vol 52 (01) ◽  
pp. 11-17
Author(s):  
Andrzej Zyluk ◽  
Paulina Zyluk-Gadowska ◽  
Lukasz Kolodziej ◽  
Zbigniew Szlosser
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Symptom Severity ◽  
Clinical Severity ◽  
Related Factors ◽  
Minimally Clinically Important Difference ◽  
Duration Of Symptoms ◽  
Younger Age ◽  
Severity Scores ◽  
Tunnel Syndrome

Abstract Purpose Outcomes of surgery for carpal tunnel syndrome may differ in relation to certain factors like age, duration of symptoms, clinical and electrophysiological severity. The objective of this study was an investigation into the hypothesis that several factors are predictive of results of surgical treatment of the condition. Methods The pre- and postoperative records of 1,117 patients: 909 women (81 %) and 208 men (19 %) with a mean age of 63 years were analysed. Outcomes recorded in the sensory and functional severity scores of the Levine questionnaire were dichotomized into achieving or not-achieving a minimally clinically important difference. The effect of selected variables: sex, age, duration of symptoms, clinical and electrophysiological severity of and presence of comorbidities on outcomes of surgery at 6 months was investigated. Results Univariate and multivariate analysis of covariates based on sex, age, duration of the disease and its clinical severity showed female gender and worse baseline symptom severity scores to be significant predictors for an improvement following carpal tunnel syndrome surgery. It showed also younger age, shorter duration of symptoms and higher baseline symptom severity scores to be predictive of a greater improvement of total grip strength, and younger age to be predictive of a greater pain cessation following surgery. Conclusion Of all considered patient’s and disease related factors, the baseline clinical severity expressed in the Levine symptom severity scores had appeared to be the strongest predictor of better outcomes of surgery for carpal tunnel syndrome.

scholarly journals Reliability and Validity of The Finnish Version of The Boston Carpal Tunnel Questionnaire among Surgically Treated Carpal Tunnel Syndrome Patients

2019 ◽  
Vol 109 (4) ◽  
pp. 343-350
Author(s):  
J. Multanen ◽  
J. Ylinen ◽  
T. Karjalainen ◽  
H. Kautiainen ◽  
J. P. Repo ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Functional Status ◽  
Carpal Tunnel ◽  
Symptom Severity ◽  
Severity Scale ◽  
Floor Effect ◽  
Symptom Severity Scale ◽  
Boston Carpal Tunnel Questionnaire ◽  
Tunnel Syndrome ◽  
Carpal Tunnel Questionnaire

Background and Aims: The Boston Carpal Tunnel Questionnaire is the most commonly used outcome measure in the assessment of carpal tunnel syndrome. The purpose of this study was to translate the original Boston Carpal Tunnel Questionnaire into Finnish and validate its psychometric properties. Materials and Methods: We translated and culturally adapted the Boston Carpal Tunnel Questionnaire into Finnish. Subsequently, 193 patients completed the Finnish version of the Boston Carpal Tunnel Questionnaire, 6-Item CTS Symptoms Scale, and EuroQol 5 Dimensions 12 months after carpal tunnel release. The Boston Carpal Tunnel Questionnaire was re-administered after a 2-week interval. We calculated construct validity, internal consistency, test–retest reliability, and coefficient of repeatability. We also examined floor and ceiling effects. Results: The cross-cultural adaptation required only minor modifications to the questions. Both subscales of the Boston Carpal Tunnel Questionnaire (Symptom Severity Scale and Functional Status Scale) correlated significantly with the CTS-6 and EuroQol 5 Dimensions, indicating good construct validity. The Cronbach’s alpha was 0.93 for both the Symptom Severity Scale and Functional Status Scale, indicating high internal consistency. Test–retest reliability was excellent, with an intraclass correlation coefficient greater than 0.8 for both scales. The coefficient of repeatability was 0.80 for the Symptom Severity Scale and 0.68 for the Functional Status Scale. We observed a floor effect in the Functional Status Scale in 28% of participants. Conclusion: Our study shows that the present Finnish version of the Boston Carpal Tunnel Questionnaire is reliable and valid for the evaluation of symptom severity and functional status among surgically treated carpal tunnel syndrome patients. However, owing to the floor effect, the Functional Status Score may have limited ability to detect differences in patients with good post-operative outcomes.

scholarly journals Effect of preoperative gabapentin on pain intensity and development of chronic pain after carpal tunnel syndrome surgical treatment in women: randomized, double-blind, placebo-controlled study

2016 ◽  
Vol 134 (4) ◽  
pp. 285-291 ◽  
Author(s):  
Eduardo Jun Sadatsune ◽  
Plínio da Cunha Leal ◽  
Rachel Jorge Dino Cossetti ◽  
Rioko Kimiko Sakata
Keyword(s):  
Chronic Pain ◽  
Neuropathic Pain ◽  
Surgical Treatment ◽  
Postoperative Pain ◽  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Postoperative Analgesia ◽  
Pain Syndrome ◽  
Double Blind ◽  
Tunnel Syndrome

ABSTRACT CONTEXT AND OBJECTIVES: Effective postoperative analgesia is important for reducing the incidence of chronic pain. This study evaluated the effect of preoperative gabapentin on postoperative analgesia and the incidence of chronic pain among patients undergoing carpal tunnel syndrome surgical treatment. DESIGN AND SETTINGS: Randomized, double-blind controlled trial, Federal University of São Paulo Pain Clinic. METHODS: Forty patients aged 18 years or over were randomized into two groups: Gabapentin Group received 600 mg of gabapentin preoperatively, one hour prior to surgery, and Control Group received placebo. All the patients received intravenous regional anesthesia comprising 1% lidocaine. Midazolam was used for sedation if needed. Paracetamol was administered for postoperative analgesia as needed. Codeine was used additionally if the paracetamol was insufficient. The following were evaluated: postoperative pain intensity (over a six-month period), incidence of postoperative neuropathic pain (over a six-month period), need for intraoperative sedation, and use of postoperative paracetamol and codeine. The presence of neuropathic pain was established using the DN4 (Douleur Neuropathique 4) questionnaire. Complex regional pain syndrome was diagnosed using the Budapest questionnaire. RESULTS: No differences in the need for sedation, control over postoperative pain or incidence of chronic pain syndromes (neuropathic or complex regional pain syndrome) were observed. No differences in postoperative paracetamol and codeine consumption were observed. CONCLUSIONS: Preoperative gabapentin (600 mg) did not improve postoperative pain control, and did not reduce the incidence of chronic pain among patients undergoing carpal tunnel syndrome surgery.

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