“…Recognition of the difficulties of hip arthroscopy and its potential complications 15,16,19 has generated a flurry of studies of the associated learning curve. 4,6,7,9,17,19 Most of these publications have reported the experience of a single surgeon, 6,7,9,17 with outcome metrics that include operative time, 6,7,9 reoperation, 7 fluoroscopy time, 17 complications, 6,7 conversion to total hip arthroplasty, 6,7 and patient-reported outcome measures. 6,7,9 While single-surgeon reports are edifying, they reflect the abilities and experience of the reporting surgeon, as well as his or her surgical team, facility, procedure mix, and patient characteristics, and thus may not be generalizable to other practitioners.…”