Conroy Ellen, Surender Ketan, Geng Zhixian, Chen Ting, Dailey Seth, Jiang Jack
Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, U.S.A.
Laryngoscope. 2014 Oct;124(10):2332-7. doi: 10.1002/lary.24724. Epub 2014 Jun 26.
OBJECTIVES/HYPOTHESIS: To investigate the use of the Video-Based Phonomicrosurgery Instrument Tracking System to collect instrument position data during simulated phonomicrosurgery and calculate motion metrics using these data. We used this system to determine if novice subject motion metrics improved over 1 week of training.
Prospective cohort study.
Ten subjects performed simulated surgical tasks once per day for 5 days. Instrument position data were collected and used to compute motion metrics (path length, depth perception, and motion smoothness). Data were analyzed to determine if motion metrics improved with practice time. Task outcome was also determined each day, and relationships between task outcome and motion metrics were used to evaluate the validity of motion metrics as indicators of surgical performance.
Significant decreases over time were observed for path length (P < .001), depth perception (P < .001), and task outcome (P < .001). No significant change was observed for motion smoothness. Significant relationships were observed between task outcome and path length (P < .001), depth perception (P < .001), and motion smoothness (P < .001).
Our system can estimate instrument trajectory and provide quantitative descriptions of surgical performance. It may be useful for evaluating phonomicrosurgery performance. Path length and depth perception may be particularly useful indicators.
目的/假设：研究基于视频的显微手术器械跟踪系统在模拟显微手术过程中收集器械位置数据，并使用这些数据计算运动指标。我们使用该系统来确定新手受试者的运动指标在1周的训练后是否有所改善。
前瞻性队列研究。
10名受试者连续5天每天进行一次模拟手术任务。收集器械位置数据并用于计算运动指标（路径长度、深度感知和运动平滑度）。分析数据以确定运动指标是否随练习时间而改善。每天还确定任务结果，并使用任务结果与运动指标之间的关系来评估运动指标作为手术表现指标的有效性。
观察到路径长度（P < .001）、深度感知（P < .001）和任务结果（P < .001）随时间显著下降。运动平滑度未观察到显著变化。观察到任务结果与路径长度（P < .001）、深度感知（P < .001）和运动平滑度（P < .001）之间存在显著关系。
我们的系统可以估计器械轨迹并提供手术表现的定量描述。它可能有助于评估显微手术表现。路径长度和深度感知可能是特别有用的指标。
