Fig. 2

Fatigue Scale Scores for Surgeons and Assistants. (A) In all surgeries, there were no significant differences in the fatigue scale scores of the surgeons; (B) In surgeries lasting more than 100 min, the use of mechanical and pneumatic arms significantly reduced the fatigue levels of the surgeons. (C) In all surgeries, there were no significant differences in the fatigue scale scores of the surgical assistant. (D) In surgeries lasting more than 100 min, the use of mechanical and pneumatic arms significantly reduced the fatigue levels of the surgical assistant. ^*P<0.05, ^**P<0.01, ^****P<0.0001.