University of Twente Student Theses


Evaluation of swelling in patients with distal radius fractures : Towards a 3D-printed patient-specific cast

Rikhof, C.J.H. (2020) Evaluation of swelling in patients with distal radius fractures : Towards a 3D-printed patient-specific cast.

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Abstract:Background - Distal radius fractures (DRF) are the most common type of fractures. The conservative treatment entails the immobilization with a splint and a plaster cast. Plaster casts are described as uncomfortable and unhygienic and are associated with. To overcome these complications a 3D-printed patient-specific cast is proposed. The aim of the current study is (1) to evaluate the pressure underneath a forearm cast and (2) to evaluate the contralateral side as an input variable for a 3D model. Method - (1) Five patients with non-displaced DRF were included in the pressure study. The pressure is measured during the entire full treatment period. (2) Thirty healthy volunteers were included in the bilateral symmetry study. From every participant three optical 3D scans were acquired, two of the right arm and one of the left arm. Seven circumference measurements were obtained at different points from each scan and heatmaps were conducted. Results - (1) The pressure measurements showed varying results. Three of the patients showed a decrease in the pressure in the first three days in the distal sensors, subsequently, the pressure stabilizes around a value. (2) The circumference measurements showed a mean error of 0.08 mm (sd: 1.39 mm) for right-right comparison and -0.25 mm (sd: 2.39 mm) for the right-left comparison. The heatmaps showed varied results, on average the deviation is similar between the right-right and right-left comparison. Conclusion - (1) The first results of the pressure study showed that after three days of wearing a splint the pressure was stabilized. Therefore, this would be the ideal moment to replace the splint. (2) The results of the bilateral symmetry study showed some similarity between the right and the left arm. In future research, the contralateral side can be used.
Item Type:Essay (Master)
Unknown organization, Arnhem
Faculty:TNW: Science and Technology
Subject:44 medicine
Programme:Technical Medicine MSc (60033)
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