COMPARATIVE STUDY
JOURNAL ARTICLE

A 5-year interval evaluation of function after pollicization for congenital thumb aplasia using multiple outcome measures

Oluseyi Aliu, David T Netscher, Kimberly G Staines, John Thornby, Arturo Armenta
Plastic and Reconstructive Surgery 2008, 122 (1): 198-205
18594406

BACKGROUND: The authors aimed to determine the functional improvement rate over a 5-year interval among patients who had undergone index finger pollicization for isolated thumb absence compared with age-matched controls. They also investigated suggestions in previous reports that tissue remodeling in reconstructed thumbs causes improvements in function outpacing normal development.

METHODS: Five patients (seven hands) evaluated 5 years earlier with grip, lateral pinch, and tripod pinch strength tests; the pegboard Functional Dexterity Test; the Jebsen Hand Function Test; standard radiographs; and parent questionnaires on appearance, social interactions, and functionality were reevaluated. Percentage changes were compared with expected changes from published norms.

RESULTS: Regarding grip strength, patients showed a 148 percent increase compared with 102 percent in controls. Regarding lateral and tripod pinch, patients had 99 and 125 percent increases compared with 78 and 69 percent in controls, respectively; the differences were not significant between groups. Functional dexterity outcomes showed the same trend. Controls improved in the five administered subtests of the Jebsen tests. In three Jebsen subtests, patients accomplished the tasks in 40 to 45 percent less time than 5 years previously. Parent perspectives were comparable to 5 years previously. Previously, 60 percent of responses were in the best category and 4 percent were in the worst category. Those percentages were 58 and 6 percent, respectively, in this study.

CONCLUSIONS: Although this was a small study group, it seems that children who have undergone index finger pollicization have changes in function comparable to normal development. Parents still have positive perspectives of the reconstructed thumb. There is no evidence that tissue remodeling causes improvement outpacing normal development.

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