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Comparison of ultrasound and dorsal tangential view for dorsal cortex screw penetration in volar plating of the distal radius |
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| Authors: | Jui-Ming Yang Chien-Kuo Wang Wei-Chin Lin Chung-Yi Li Fong-Chin Su I-Ming Jou Po-Ting Wu |
| Affiliation: | 1. Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan Department of Orthopedics, Tainan ShinLau Christian Hospital, Tainan, Taiwan;2. Department of Radiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan;3. Department of Orthopaedic Surgery, Show Chwan Memorial Hospital, Changhua, Taiwan Department of Orthopedics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan;4. Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan Department of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung, Taiwan;5. Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan;6. Department of Orthopedics, E-Da Hospital, Kaohsiung, Taiwan School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan;7. Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan |
| Abstract: | We compared the accuracy of the fluoroscopic dorsal tangential view (DTV) and an ultrasound (US) examination in detecting dorsal screw penetration during volar distal radius plating. In six fresh cadaveric distal radii, seven periarticular locking screws in two rows for each plate were inserted according to the measured length using a depth gauge and then replaced with another that was 1 and 2 mm longer, respectively. The actual protruded length of each screw was determined using computed tomography (CT) images. The accuracy of US and DTV measurements was determined using the intraclass correlation coefficient (ICC), as both measurements were compared with CT measurements. The ICC of US and DTV was 0.96 and 0.75, respectively, for all screws. After excluding the data for proximal-row screws, the ICC of US remained unchanged at 0.96, and that of DTV improved to 0.86. The ICC of US was significantly higher than that of DTV (p < 0.01). US had a 100% detection rate for screw protrusion of more than 1.0 mm. US examination showed excellent consistency with CT measurements and its accuracy was not affected by screw location. US might thus be a practical tool for detecting dorsal cortex screw penetration during volar distal radius plating. |
| Keywords: | fluoroscopy radius fractures screws penetration ultrasound volar plating |