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The Impact of Trigger Finger on Hand Function, Quality of Life and Activity and Participation
Shai Luria, MD1, Adina Maeir, PhD1, Michael Michailevich, MD2; Danit Langer, MSc1, 1Hadassah-Hebrew University Medical Center, Jerusalem, Israel, 2Sherutay Briut Clalit, Jerusalem, Israel

Introduction: The goals of the study were to: a) evaluate the impact of trigger finger (TF) on motor function, activity & participation (A&P) and quality of life (QOL); b) evaluate the association between personal factors (age and gender, disease severity) and body functions (dexterity and strength) with A&P and QOL in patients with TF.
Methods: Sixty-six patients with TF (study group) and 66 healthy volunteers (control group) participated in the study. TF symptoms were graded using the Quinnell classification. A&P was evaluated using the Disabilities of Arm Shoulder and Hand (DASH) questionnaire and QOL was evaluated using the World Health Organization Quality of Life (WHOQOL-BREF) questionnaire. Dexterity was evaluated using the Functional Dexterity Test (FDT) & the Purdue Pegboard Test (PPT) and strength evaluated with the Jamar Dynamometer (JD) and Pinch Gauge (PG). A hierarchal stepwise analysis was used to calculate the explanatory power of the independent personal (age and gender), disease severity (Quinnell grade) and impairment (hand strength and dexterity) variables on the dependent variables (DASH and global health related QOL).
Results: The comparisons between the study and control groups revealed significant differences in all measures. The study group reported lower perceived QOL, A&P and reduced hand strength and dexterity. Hierarchical regression analyses revealed that (a) the severity of TF contributed significantly to the explained variance of QOL, while, demographics and hand functioning did not; (b) demographics, TF severity and hand function all contributed significantly to the explained variance of A&P.
Conclusion: Although TF is considered a relatively mild condition, this study demonstrated its significant impact on all domains of the study model using the International Classification of Function framework. Measuring dysfunction with the DASH questionnaire is sensitive to different factors. In contrast, it is possible that the relationship between TF severity and QOL can be attributed to a prolonged period of disruption in daily life in individuals with more severe TF, which in turn affects psychological and physical well-being. Other factors, which will affect the DASH, will not have the same significant effect on QOL.

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