Carpal Tunnel Syndrome Effects on Grip Force Coordination

1998 ◽  
Vol 42 (12) ◽  
pp. 851-855
Author(s):  
Brian D. Lowe ◽  
Andris Freivalds
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Grip Force ◽  
Pinch Grip ◽  
Force Coordination ◽  
Hand Tool ◽  
Tunnel Syndrome ◽  
Two Measures

This study investigated the effects of carpal tunnel syndrome (CTS) on the coordination between grip force on and the force applied with a hand tool. A simulated tool device was developed to measure pinch grip force exerted on the tool and the force applied with the tool to a workpiece. Two measures of grip force coordination efficiency were calculated for seven subjects with diagnoses of carpal tunnel syndrome and seven controls. The dependent measures reflected subjects' abilities to (1) modulate grip force in parallel with the tool application force and (2) minimize the ratio of grip force to application force when dynamically applying forces with the tool. The parallel modulation of grip force with application force was 12% lower (p < 0.05) and the ratio of grip force to application force was 54% higher (p < 0.05) for the CTS group than for the controls. These results suggest that individuals with carpal tunnel syndrome lose some ability to efficiently coordinate grip force with tool application force.

Bilateral deficits in fine motor control and pinch grip force in patients with unilateral carpal tunnel syndrome

2008 ◽  
Vol 194 (1) ◽  
pp. 29-37 ◽  
Author(s):  
César Fernández-de-las-Peñas ◽  
Marta Pérez-de-Heredia-Torres ◽  
Rosa Martínez-Piédrola ◽  
Ana Isabel de la Llave-Rincón ◽  
Joshua A. Cleland
Keyword(s):  
Motor Control ◽  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Grip Force ◽  
Fine Motor ◽  
Fine Motor Control ◽  
Pinch Grip ◽  
Tunnel Syndrome

Bilateral Deficits in Fine Motor Control and Pinch Grip Force Are Not Associated with Electrodiagnostic Findings in Women with Carpal Tunnel Syndrome

2011 ◽  
Vol 90 (6) ◽  
pp. 443-451 ◽  
Author(s):  
Ana Isabel de la Llave-Rincón ◽  
César Fernández-de-las-Peñas ◽  
Marta Pérez-de-Heredia-Torres ◽  
Almudena Martínez-Perez ◽  
Marie Carmen Valenza ◽  
...  
Keyword(s):  
Motor Control ◽  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Grip Force ◽  
Fine Motor ◽  
Fine Motor Control ◽  
Pinch Grip ◽  
Tunnel Syndrome

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 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.

A Checklist for Carpal Tunnel Syndrome

1986 ◽  
Vol 30 (14) ◽  
pp. 1438-1442 ◽  
Author(s):  
George M. Calisto ◽  
Bernard C. Jiang ◽  
S.H. Cheng
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Upper Extremity ◽  
Carpal Tunnel ◽  
Manufacturing Sector ◽  
Mechanical Stresses ◽  
Material Management ◽  
Hand Tool ◽  
Working Postures ◽  
Tunnel Syndrome ◽  
Service Data

Efforts to control the incidence of Carpal Tunnel Syndrome (CTS) in industry should focus on introducing the shop supervisor to those basic biomechanical principles underlying the etiology of CTS; i.e., it is the supervisor who best monitors an employee's reactions to prescribed work methods, tools, and concomitant postures. A three-part, pictorially illustrated checklist was developed: Part I assists in the identification of upper-extremity working postures; Part II facilitates the judgement of force/torque levels by identifying the implemented tool and the material which it acts on; and Part III examines the mechanical stresses resulting from hand-tool and/or limb-worksurface interfaces. Copies of the checklist were distributed to several AT&T manufacturing, installation, service, data, and material management centers to determine its readability, relevance, time for completion, and utility in terms of orienting the supervisor to the said principles. In general, supervisory input indicated that the checklist catered mainly to the manufacturing sector: most manufacturing supervisors found the form to be readable, pertinent, and edifying.

scholarly journals Diagnostic accuracy of sensory and motor tests for the diagnosis of carpal tunnel syndrome: a systematic review

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Armaghan Dabbagh ◽  
Joy C. MacDermid ◽  
Joshua Yong ◽  
Tara L. Packham ◽  
Luciana G. Macedo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Carpal Tunnel Syndrome ◽  
Diagnostic Accuracy ◽  
Grip Strength ◽  
Carpal Tunnel ◽  
Test Accuracy ◽  
Pinch Grip ◽  
Motor Test ◽  
Tunnel Syndrome ◽  
Motor Tests

Abstract Background Carpal tunnel syndrome (CTS) is the most common entrapment mononeuropathy of the upper extremity. The previous systematic review of the diagnostic tests for CTS was outdated. The objective of this study was to compile and appraise the evidence on the accuracy of sensory and motor tests used for the diagnosis of CTS. Methods MEDLINE, CINAHL, and Embase databases were searched on January 20, 2020. Studies assessing at least one diagnostic accuracy property of the sensory or motor tests for CTS diagnosis were selected by two independent reviewers. Diagnostic test accuracy extension of the PRISMA guidelines was followed. Risk of bias and applicability concerns were rated using QUADAS-2 tool. Any reported diagnostic accuracy property was summarized. Study characteristics and any information on the accuracy of the sensory and motor tests for CTS diagnosis were extracted. Results We included sixteen clinical studies, assessing thirteen different sensory or motor tests. The most sensitive test for CTS diagnosis was the Semmes-Weinstein monofilament test (with 3.22 in any radial digit as the normal threshold) with sensitivity from 0.49 to 0.96. The tests with the highest specificity (Sp) were palmar grip strength (Sp = 0.94), pinch grip strength (Sp from 0.78 to 0.95), thenar atrophy (Sp from 0.96 to 1.00), and two-point discrimination (Sp from 0.81 to 0.98). Conclusions The evidence was inconclusive on which sensory or motor test for CTS diagnosis had the highest diagnostic accuracy. The results suggest that clinicians should not use a single sensory or motor test when deciding on CTS diagnosis. Trial registration PROSPERO CRD42018109031, on 20 December 2018.

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