. 2021 May 4;9(5):23259671211007401. doi: 10.1177/23259671211007401

TABLE A3.

Failure Rate of Included Studies: PAO^a

First author (Year)	Mean Follow-up, mo	No. of Patients	Revision Hip Arthroscopic Surgery		Conversion to THA
First author (Year)	Mean Follow-up, mo	No. of Patients	n (%)	Description	n (%)	Description
McClincy²⁹ (2019)	26.4	49	NR	NR	NR	NR
Mose³² (2019)	24	99^b	22 (22.2)^b	There were 14 patients with type 3a tears, 1 patient with a type 3b tear, and 1 patient with a type 1 tear. Also, 4 patients were preoperatively classified as having type 0 tears, but during arthroscopic surgery, the labrum was found to be affected in 3 patients and was treated accordingly.	1 (1.0)^b	NR

^aNR, not reported; PAO, periacetabular osteotomy; THA, total hip arthroplasty.

^bThere were 44 patients with borderline dysplasia (lateral center-edge angle of 20°-25°) and 55 with dysplasia (lateral center-edge angle <20°), which we could not distinguish.