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Grip force control during object manipulation in cervical myelopathy

Study design Cross-sectional research. Objectives To objectively evaluate grip force (GF) control while holding a freely movable object in individuals with cervical myelopathy (CM). Setting Harunaso Hospital, Takasaki, Japan. Methods We studied 52 hands from 26 individuals with CM. Participants perf...

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Bibliographic Details
Published in:Spinal cord 2020-06, Vol.58 (6), p.689-694
Main Authors: Noguchi, Naoto, Lee, Bumsuk, Kamiya, Shoya, Kondo, Ken, Teshima, Ryoto, Ino, Masatake, Tanaka, Koji, Yamazaki, Tsuneo
Format: Article
Language:English
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Summary:Study design Cross-sectional research. Objectives To objectively evaluate grip force (GF) control while holding a freely movable object in individuals with cervical myelopathy (CM). Setting Harunaso Hospital, Takasaki, Japan. Methods We studied 52 hands from 26 individuals with CM. Participants performed a grip-and-lift task by pulp pinch using the thumb and index finger before surgery. We monitored individual finger GF (N) during the first 3 s while lifting and holding an object. Correlations between the GF and other clinical tests were evaluated. A multiple stepwise regression analysis was used to examine the contribution of the GF to the severity of clinical symptoms. Results Thumb GF was negatively correlated with the 10-s test (rs = −0.32), and index finger GF was positively correlated with its cutaneous pressure threshold (rs = 0.34). Multiple regression for the severity of upper extremity symptoms revealed that the model including the GF had a larger adjusted R 2 and a lower AIC value than that of conventionally used clinical tests. Conclusions These results suggested that the assessment of individual finger GF control could provide an indicator of the clinical severity of upper extremity in individuals with CM.
ISSN:1362-4393
1476-5624
DOI:10.1038/s41393-020-0414-x