van Ginkel Laura, Dupuis Lotte, Verhamme Luc, Hermans Erik, Maal Thomas J J, Stirler Vincent
Department of Trauma Surgery, Radboud University Medical Center, Nijmegen, The Netherlands.
Technical Medicine, University of Twente, Enschede, The Netherlands.
PLOS Digit Health. 2024 Apr 18;3(4):e0000458. doi: 10.1371/journal.pdig.0000458. eCollection 2024 Apr.
The conventional treatment for distal radius fractures typically involves immobilization of the injured extremity using a conventional forearm cast. These casts do cause all sorts of discomfort during wear and impose life-style restrictions on the wearer. Personalized 3D printed splints, designed using three-dimensional (3D) imaging systems, might overcome these problems. To obtain a patient specific splint, commercially available 3D camera systems are utilized to capture patient extremities, generating 3D models for splint design. This study investigates the feasibility of utilizing a new camera system (SPENTYS) to capture 3D surface scans of the forearm for the design of 3D printed splints. In a prospective observational cohort study involving 17 healthy participants, we conducted repeated 3D imaging using both the new (SPENTYS) and a reference system (3dMD) to assess intersystem accuracy and repeatability. The intersystem accuracy of the SPENTYS system was determined by comparison of the 3D surface scans with the reference system (3dMD). Comparison of consecutive images acquired per device determined the repeatability. Feasibility was measured with system usability score questionnaires distributed among professionals. The mean absolute difference between the two systems was 0.44 mm (SD:0.25). The mean absolute difference of the repeatability of the reference -and the SPENTYS system was respectively 0.40 mm (SD: 0.30) and 0.53 mm (SD: 0.25). Both repeatability and intersystem differences were within the self-reported 1 mm. The workflow was considered easy and effective, emphasizing the potential of this approach within a workflow to obtain patient specific splint.
桡骨远端骨折的传统治疗方法通常是使用传统的前臂石膏固定受伤的肢体。这些石膏在佩戴过程中确实会引起各种不适，并对佩戴者的生活方式造成限制。使用三维（3D）成像系统设计的个性化3D打印夹板可能会克服这些问题。为了获得患者特定的夹板，利用市售的3D相机系统来捕捉患者的肢体，生成用于夹板设计的3D模型。本研究调查了使用一种新的相机系统（SPENTYS）来捕捉前臂的3D表面扫描以设计3D打印夹板的可行性。在一项涉及17名健康参与者的前瞻性观察队列研究中，我们使用新的（SPENTYS）和参考系统（3dMD）进行了重复的3D成像，以评估系统间的准确性和可重复性。通过将3D表面扫描与参考系统（3dMD）进行比较来确定SPENTYS系统的系统间准确性。比较每个设备获取的连续图像来确定可重复性。通过向专业人员分发系统可用性评分问卷来衡量可行性。两个系统之间的平均绝对差异为0.44毫米（标准差：0.25）。参考系统和SPENTYS系统的可重复性平均绝对差异分别为0.40毫米（标准差：0.30）和0.53毫米（标准差：0.25）。可重复性和系统间差异均在自我报告的1毫米范围内。该工作流程被认为简单有效，强调了这种方法在获取患者特定夹板的工作流程中的潜力。
