ABSTRACT
PURPOSE: As filler procedures have increased in popularity, serious injection-related complications (e.g., blindness and stroke) have also increased in number. Proper and effective training is important for filler procedure safety; however, limitations exist in traditional training methods (i.e. anatomical illustrations and cadaver studies). We aimed to describe the development process and evaluate the usability of a virtual reality (VR)-based aesthetic filler injection training system. MATERIALS AND METHODS: We developed the virtual reality hardware for the training system and a short guide, with a lecture regarding safe filler injection techniques. One hundred clinicians who attended a conference tested the training system. Participants completed system usability scale (SUS) and satisfaction questionnaires. RESULTS: Nearly half of the participants were aged 35-50 years, and 38% had more than 5 years of aesthetic experience. The mean SUS score was 59.8 (standard deviation, 12.23), with no significant differences among the evaluated subgroups. Approximately 76% of participants provided SUS scores of more than 51, indicating acceptable usability. Participants aged 35-50 years were more likely to rate the system as having poor usability than were those aged < 35 years (odds ratio = 5.20, 95% confidence interval: 1.35-20.08). CONCLUSIONS: This study was the first to develop and explore the usability of a VR-based filler training system. Nearly three-fourths of participants indicated that the training system has an acceptable level of usability. However, assessments in precise target audiences and more detailed usability information are necessary to further refine the training system. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
Subject(s)
Cosmetic Techniques , Dermal Fillers , Virtual Reality , Adult , Blindness , Esthetics , Humans , Middle AgedABSTRACT
The aim of this study was to elucidate the injection point on the teres minor (TM) for effective injection. Thirty-two specimens from 16 adult Korean cadavers (10 males and 6 females, age ranging from 42 to 102 years) were used in the study. The reference line between the inferior point on the inferior angle of the scapula (IA) and the most prominent point on the acromial angle of the scapula (AA) on the surface were identified. The measurements expressed the two above-mentioned parameters as X and Y coordinates in relation to the reference line. The X coordinate was located at 128.1±10.4 mm (78.1±5.7 %) and the Y coordinate was located at 25.3±7.6 mm (15.5±4.8 %). The recommended site according to this can be used for injections in patients with TM stiffness.
El objetivo fue determinar el punto de inyección en el músculo redondo menor (MRM) para llevar a cabo una correcta inyección. Se utilizaron 32 muestras correspondientes a 16 cadáveres adultos coreanos (10 hombres y 6 mujeres, entre 42 a 102 años de edad). Se identificó en la superficie la línea de referencia entre el punto inferior en el ángulo inferior de la escápula (AI) y el punto más prominente en el ángulo acromial de la escápula (AA). Las mediciones expresaron los dos parámetros mencionados anteriormente como coordenadas X e Y en relación con la línea de referencia. La coordenada X se encuentra a 128,1±10,4 mm (78,1±5,7 %) y la coordenada Y estaba situada a 25,3±7,6 mm (15,5±4,8 %). El sitio recomendado de acuerdo a estos resultados se puede usar para preparaciones inyectables en pacientes con rigidez del MRM.
