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Validity and Reliability of the Thumb Grasp and Pinch Assessment for Children After Reconstruction of Congenital Hypoplastic Thumbs.
- Source :
-
The Journal of hand surgery [J Hand Surg Am] 2024 Oct; Vol. 49 (10), pp. 1041.e1-1041.e8. Date of Electronic Publication: 2023 Feb 10. - Publication Year :
- 2024
-
Abstract
- Purpose: The Thumb Grasp and Pinch Assessment (T-GAP) is a new instrument for evaluating thumb use in children with congenital hypoplastic thumbs. The assessors video-record the children while they perform nine specific activities and score their grasp types using T-GAP. A high T-GAP score indicates more mature grasp patterns. The developers reported the instrument's validity and reliability for index finger pollicization. This study investigated T-GAP's validity and reliability in children with reconstructed hypoplastic thumbs.<br />Methods: Four hand surgeons and two hand therapists from two hospitals rated video clips of 20 Manske type II and IIIa hands twice in 17 patients who performed the T-GAP at least 1 year after opposition transfer and thumb ligament reconstruction. To investigate the validity, we calculated correlation coefficients for T-GAP scores and clinical outcomes, including thumb ROM, grip and pinch strength, and visual analog assessments of thumb function and appearance. To estimate T-GAP's inter- and intrarater reliability, we calculated intraclass correlation coefficients and their 95% confidence intervals (CIs).<br />Results: Thumb Grasp and Pinch Assessment score showed a strong linear correlation (r = 0.815-0.944) and a moderate to strong nonlinear correlation (ρ = 0.527-0.744) with visual analog scale assessments of thumb function and appearance, respectively; a moderate nonlinear correlation (ρ = 0.464) with grip strength; and a moderate nonlinear correlation (ρ = 0.541) with thumb MCP joint range of motion. The intraclass correlation coefficient for the interrater reliability was 0.892 (95% CI, 0.768-0.954) in round 1 and 0.898 (95% CI, 0.754-0.959) in round 2, and for intrarater reliability, the mean was 0.882 (95% CI, 0.785-0.980).<br />Conclusions: Thumb Grasp and Pinch Assessment score had a moderate to strong construct validity and a moderate concurrent validity. Both inter- and intrarater reliability was strong.<br />Clinical Relevance: This study supports the T-GAP instrument's validity and reliability for assessing functional outcomes in congenital hypoplastic thumb reconstruction.<br /> (Copyright © 2024 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.)
- Subjects :
- Humans
Reproducibility of Results
Male
Female
Child
Child, Preschool
Hand Deformities surgery
Hand Deformities physiopathology
Plastic Surgery Procedures methods
Video Recording
Thumb abnormalities
Thumb surgery
Thumb physiopathology
Hand Strength physiology
Range of Motion, Articular physiology
Pinch Strength physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1531-6564
- Volume :
- 49
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- The Journal of hand surgery
- Publication Type :
- Academic Journal
- Accession number :
- 36775792
- Full Text :
- https://doi.org/10.1016/j.jhsa.2022.12.017