Abstract
Study design
Cross-sectional.
Objectives
To investigate the natural course of passive tenodesis grip in individuals with spinal cord injury (SCI) with no experience of tenodesis splint application and the related factors for success of the grip.
Setting
Community-dwelling persons with chronic SCI in South Korea.
Methods
Individuals with cervical SCI with preserved wrist extensor power, but completely paralyzed fingers and thumbs, were recruited. For each hand, success or failure of passive tenodesis lateral grip was assessed both in the opening and closing phase. The key task in the Graded and Redefined Assessment of Strength, Sensibility, and Prehension (GRASSP) test was also assessed.
Results
Fifty-eight hands of 37 individuals with SCI were analyzed. In 35 of the 58 hands, both opening and closing phases of the grip were achieved. During the closing phase of the passive tenodesis lateral grip, the mean (s.d.) value of the second MP joint flexion angle (°) in the success group was 55.1 (13.6), compared to 38.6 (17.8) in the failure group. The key task in GRASSP was completed in only 14 out of 58 hands. Hands with a wrist extensor power of grade 4 or 5 on a manual muscle test showed higher GRASSP scores than those with a grade 3 wrist extensor power.
Conclusions
The passive tenodesis lateral grip can be achieved in a large number of hands without splint application after SCI, but its use in the key task of the GRASSP is limited.
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Authors contribution
HYJ was responsible for acquisition of data, analysis, and interpretation of data, and writing the protocol. LJ was responsible for acquisition of data, conducting the search, and making the study concept and design. HIS was responsible for making the study concept and design and drafting the work, and critical revision of the manuscript.
Funding
This work was funded by Korea Workers’ Compensation and Welfare Service. This study was funded by Seoul National University Hospital Grant No. 0420150650 (2015-1218).
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Jung, H.Y., Lee, J. & Shin, H.I. The natural course of passive tenodesis grip in individuals with spinal cord injury with preserved wrist extension power but paralyzed fingers and thumbs. Spinal Cord 56, 900–906 (2018). https://doi.org/10.1038/s41393-018-0137-4
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DOI: https://doi.org/10.1038/s41393-018-0137-4
