CRP and infection: In this report, the preoperative MRI examination (Fig. 1C,D) showed that the soft tissues in the carpal tunnel were swollen and there was a large amount of fluid, which had pressed the median nerve, combined with the medical history and physical examination, this was an indication for emergency surgery.[10] Blood tests provide evidence of infection, and of the inflammatory markers hypersensitive C-reactive protein takes the shortest time to return to normal and can be used as a dynamic test of treatment efficacy.