Abstract:[Objective] To compare the clinical effect of non-fluoroscopy (NFS) arthroscopic acetabuloplasty versus conventional fluoroscopy (FS) counterpart for treatment of pincer femoroacetabular impingement (P-FAI). [Methods] A retrospective analysis was performedon 70 patients who were underwent hip arthroscopy for P-FAI in Department of Orthopedics, PLA General Hospital from October 2021 toFebruary 2023. According to the preoperative doctorpatient communication, 35 patients underwent a line-like acetabuloplasty under NFSarthroscopy, while other 35 patients underwent conventional FS arthroscopic acetabuloplasty. The documents regarding to perioperative period, follow-up and images were compared between the two groups. [Results] All patients in both groups had the arthroscopic procedure performed successfully without serious complications, such as injury of important blood vessels and nerves. The NFS group proved significantlysuperior to the FS group in terms of operative time [(110.1±14.8) min vs (128.5±22.5) min, P<0.001] and intraoperative fluoroscopy times[(0.9±0.9) times vs (2.9±1.4) times, P<0.001], although there were no significant differences in intraoperative blood loss, incision healing andhospital stay between the two groups (P>0.05). All patients in both groups were followed up for more than 12 months, with an average of(26.4±5.5) months. At the last follow-up, VAS scores significantly decreased (P<0.05), while mHHS and iHOT scores significantly increasedin both groups (P<0.05). There were no statistically significant differences in VAS, mHHS and iHOT scores between the two groups beforesurgery (P>0.05). At the last followup, the NFS group was greater than the FS group in terms of VAS and mHHS scores, and the former wasless than the latter in IHOT-12 scores, whereas all of the differences in abovementioned parameters proved not statistically significant between the two groups (P>0.05). In terms of imaging, the lateral center-edge angle (LCEA) and acetabular index (AI) in both groups significantly improved at the last follow-up compared with those before surgery (P<0.05), whereas which were not significantly different betweenthe two groups at any time points accordingly (P>0.05). [Conclusion] Both non-fluoroscopy and conventional fluoroscopy arthroscopic acetabuloplasty do achieve good clinical results, with no significant differences between the two methods, but the former does save operationtime and reduce the impact of radiation on health.