Scratch Collapse Test: a new clinical test for peripheral nerve compression

Sollero, Carlos Eduardo Vervloet; Filho, Péricles Maranhão

doi:10.1590/0004-282x20140184

Cited by 6 publications

(2 citation statements)

References 2 publications

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“… 12 Several other authors have also reported positive findings with the SCT. Sollero and Maranhão-Filho 25 demonstrated a positive SCT in EMG-confirmed CTS when other clinical examinations were unremarkable. Pinder and Ng 26 similarly reported a positive SCT with EMG-confirmed long thoracic nerve compression.…”

Section: Discussionmentioning

confidence: 89%

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

Huynh¹,

Karir²,

Bennett³

2018

Plastic and Reconstructive Surgery - Global Open

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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.

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Section: Discussionmentioning

confidence: 89%

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

Huynh¹,

Karir²,

Bennett³

2018

Plastic and Reconstructive Surgery - Global Open

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“…Before testing, the examiner demonstrated the procedures to the participants and instructed them to exert maximal force against the device for five seconds. All muscular groups were tested once, after a familiarization trial, and a 30-second rest interval was allowed between the tests 16 ) .…”

Section: Methodsmentioning

confidence: 99%

Handgrip strength deficits best explain limitations in performing bimanual activities after stroke

et al. 2016

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[Purpose] To evaluate the relationships between residual strength deficits (RSD) of the upper limb muscles and the performance in bimanual activities and to determine which muscular group would best explain the performance in bimanual activities of chronic stroke individuals. [Subjects and Methods] Strength measures of handgrip, wrist extensor, elbow flexor/extensor, and shoulder flexor muscles of 107 subjects were obtained and expressed as RSD. The performance in bimanual activities was assessed by the ABILHAND questionnaire. [Results] The correlations between the RSD of handgrip and wrist extensor muscles with the ABILHAND scores were negative and moderate, whereas those with the elbow flexor/extensor and shoulder flexor muscles were negative and low. Regression analysis showed that the RSD of handgrip and wrist extensor muscles explained 38% of the variance in the ABILHAND scores. Handgrip RSD alone explained 33% of the variance. [Conclusion] The RSD of the upper limb muscles were negatively associated with the performance in bimanual activities and the RSD of handgrip muscles were the most relevant variable. It is possible that stroke subjects would benefit from interventions aiming at improving handgrip strength, when the goal is to increase the performance in bimanual activities.

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Objective evaluation of the ``scratch collapse test'' for the diagnosis of carpal tunnel syndrome

García-Medrano

Pérez

Montoya³

et al. 2021

Injury

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Scratch Collapse Test: a new clinical test for peripheral nerve compression

Cited by 6 publications

References 2 publications

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

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

Handgrip strength deficits best explain limitations in performing bimanual activities after stroke

Objective evaluation of the ``scratch collapse test'' for the diagnosis of carpal tunnel syndrome

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