生物学と医学

概要

The force required to open a plastic bottle in a patient with a distal radius fracture

Kazuo Saito, Yumiko Saito

The aim of this study was to determine what factors are involved in the process of conservative treatment of patients with distal radius fractures and to determine the cutoff value for estimating the hand function required to open a plastic bottle. This case-control study included outpatients who visited a single hospital and a single orthopedic clinic. Fifty patients were included in the open group, who could open the plastic bottle, and the non-open group, who could not open the plastic bottle. A torque meter was used to measure the torque value required to open the plastic bottle. The relationship between grip strength and pinch strength was also examined. Hand function was examined between the open group and the non-open group. Logistic regression analysis identified postinjury time (odds ratio [OR] 1.07, 0.02), pain (OR 1.68, p = 0.018), grip strength of the affected hand (OR 1.50, p = 0.001), pinch strength of the affected hand (OR 1.12, p = 0.001), and torque value (OR 1.74, p = 0.001) as predictors of the ease of opening a plastic bottle. Receiver operating characteristic curves showed postinjury time (28.5 days), pain (1.53), grip strength of the affected hand (20.5 kg), pinch strength of the affected hand (4.5 kg), and torque value (95 N-cm) as cutoff values ​​for the affected hand to predict the ability to open a plastic bottle. Three factors were found to be significantly associated with the ability of patients with distal radius fractures to open a plastic bottle, and cutoff values ​​could be obtained for each factor. It was suggested that these values ​​could serve as targets for promoting rehabilitation.