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. Currently, there are no definitive guidelines for the resection of a cam lesion. The purpose of this study was to investigate factors indicating the potential differences in low and high volume hip arthroscopists in marking the area of resection in cam lesions using X-rays for preoperative planning. Methods. Thirty-nine surgeons with varying levels of hip arthroscopy experience participated in the study. Surgeons filled out a survey and traced the area of optimal resection on radiographs with varying amounts of cam FAI. Participants were grouped by number of hip arthroscopies performed, years of surgical experience, and number of surgeries performed. Results. Surgeons who perform osteoplasty as a high percentage of their total hip surgeries per year correlate to the total number of hip arthroscopies performed per year (r=0.412, p<0.05) and number of years of experience (r=0.72, p<0.01). Surgeons performing greater than 50 cases per year traced a larger resection area for 3 different patients’ radiographs as compared to those performing less than 50 cases per year (117%, 143%, and 173%, p<0.05). Conclusions. This study demonstrates that surgeons with less experience (decreased number of years operating and total number of surgeries) plan for resecting less cam than do experienced surgeons

Variation in Planned Resection of CAM FAI Based on Surgeon Experience