Development and initial application of virtual reality training system for combat musculoskeletal trauma care
Objective To develop a virtual reality (VR) training system for combat musculoskeletal trau-ma care (CMTC) and to assess the initial training effect. Methods The scenarios and scripts of different trauma severities,trauma care in both war and peace zones,and trauma triage were developed based on the STS-ETC content design principle (scene,trauma,stage,evaluation,treatment,classify). Then the tools of Maya,Photoshop,Unity,SQLite,Visual Studio,etc. were utilized to create a VR simulation training case for CMTC. Thirty trainees who were receiving standardized training at our hospital were selected for pre-test. There were 3 males and 27 females aged 26-45 (mean 37.2) years. Before and after the VR training for CMTC,all the 30 trainees were assessed for CMTC knowledge and tactical combat casualty care (TCCC) decision-making scores. The feedback of the training was as-sessed by a satisfaction questionnaire,and the usability of the VR system for CMTC was scored by the system usabili-ty scale (SUS). Results After training,the trainees' knowledge score significantly increased from 69.2±10.9 to 75.7±6.9,and the TCCC decision-making score from 73.0±8.9 to 79.5±7.6 (both P<0.001). The SUS score was 70.4±9.40,indicating a high level of usability of the VR system for CMTC. All trainees agreed that the VR training was conducive to mastering key concepts and enhancing learning efficiency and enthusiasm. Furthermore,96.67% of trainees showed that the VR system for CMTC was flexible and inspiring,and were satisfied with the training effect. Conclusion The VR training system for CMTC revealed significantly improved scores for both CMTC knowledge and TCCC decision-making,together with a>60 SUS score for all trainees. Therefore,this system can be utilized as a supplement to combat casualty care training.