Analyzing finger interdependencies during the Purdue Pegboard Test and comparative activities of daily living.
J Hand Ther. 2017 Jan – Mar;30(1):80-88
Authors: Gonzalez V, Rowson J, Yoxall A
STUDY DESIGN: Bench and cross-sectional study.
INTRODUCTION: Information obtained from dexterity tests is an important component of a comprehensive examination of the hand.
PURPOSE OF THE STUDY: To analyze and compare finger interdependencies during the performance of the Purdue Pegboard Test (PBT) and comparative daily tasks.
METHODS: A method based on the optoelectronic kinematic analysis of the precision grip style and on the calculation of cross-correlation coefficients between relevant joint angles, which provided measures of the degree of finger coordination, was conducted on 10 healthy participants performing the PBT and 2 comparative daily living tasks.
RESULTS: Daily tasks showed identifiable interdependencies patterns between the metacarpophalangeal joints of the fingers involved in the grip. Tasks related to activities of daily living resulted in significantly higher cross-correlation coefficients across subjects and movements during the formation and manipulation phases of the tasks (0.7-0.9), whereas the release stage produced significantly lower movement correlation values (0.3-0.7). Contrarily, the formation and manipulation stages of the PBT showed low finger correlation across most subjects (0.2-0.6), whereas the release stage resulted in the highest values for all relevant movements (0.65-0.9).
DISCUSSION: Interdependencies patterns were consistent for the activities of daily living but differ from the patterns observed from the PBT.
CONCLUSIONS: The PBT does not compare well with the whole range of finger movements that account for hand performance during daily tasks.
LEVEL OF EVIDENCE: Not applicable.
PMID: 27185088 [PubMed – indexed for MEDLINE]