| Summary: | 碩士 === 國立中正大學 === 資訊管理所 === 96 === Computer Assistance Orthopedic Navigation System（CAOS）is the newest application of information technology in orthopedics operation for the past five years.
The research model and related hypotheses of this study are based on the Technology Acceptance Model（TAM）and Theory of Planned Behavior (TPB) with external variables that might influence orthopedic surgeons’ acceptance. The questionnaires were distributed to orthopedic surgeons in medial centers and regional teaching hospitals in Taiwan which have adopted the CAOS for two years or more. Through statistic analysis, we found that research model is useful in indicating factors that affect orthopedic surgeons to accept CAOS. Four factors: perceived usefulness, task (operation) complexity, subjective norm, and image, are significantly affecting the respondents’ behavior intention with R2 =.332***and ***p < 0.001.
The development of CAOS was not mature by the time this study was conducted and still is not. According to the importance performance analysis, the navigation systems lacked of flexibility and were not easy to use. Also, the instructions for navigation systems were insufficient. All of these factors are perceived as important but unsatisfied factors currently.
Combined TAM and TPB are useful in investigating the acceptance of CAOS by orthopedic surgeons. However, some modifications are required. The support of high-order executive and familiar degree to the navigation system can facilitate the surgeons in using CAOS.
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