This study investigated the effects of wearing a wrist support splint for 8 wk and receiving a formal education program on patients with carpal tunnel syndrome (CTS), as well as factors associated with patients' desire to seek surgical intervention. Participants were recruited from a hospital surgical wait list and randomly assigned to an intervention group (n = 30) or a control group (n = 24). Significant improvements in measures of symptom severity and functional status over the duration of the study appeared in the intervention group but not in the control group. Logistic regression for the intervention group showed that symptom severity (odds ratio [OR] = 1.53, 95% confidence interval [CI] [1.20-1.93]), functional deficits (OR = 1.31, 95% CI [1.08-1.57]), pain score (OR = 1.25, 95% CI [1.11-1.61]), and symptom duration (OR = 1.11, 95% CI [1.01-1.24]) were positively associated with the desire to seek surgical intervention. This conservative CTS treatment program conducted by occupational therapists can improve symptoms and hand function in CTS patients.

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a b s t r a c tWhile humans rely on vision during navigation, they are also competent at navigating non-visually. However, non-visual navigation over large distances is not very accurate and can accumulate error. Currently, it is unclear whether this accumulation of error is due to the visual estimate of the distance or to the locomotor production of the distance. In a series of experiments, using a blindfolded walking test, we examine whether enhancing the visual estimate of the distance to a previously seen target, through environmental enrichment, visual imagery, or repeated exposure would improve the accuracy of blindfold navigation across different distances. We also attempt to decrease the visual estimate in order to see if the opposite effect would occur. Our results would indicate that manipulation of the static visual distance estimate did not change the navigation accuracy to any great extent. The only condition that improved accuracy was repeated exposure to the environment through practice. These results suggest that error observed during blindfold navigation may be due to the locomotor production of the distance, rather than the visual process.

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