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Background: Patients with acetabular dysplasia are at a higher risk of developing symptomatic labral tears. Isolated treatments that address these pathologies are well established. Combined treatment with hip reorientation osteotomy using Bernese periacetabular osteotomy in addition to arthroscopic labral repair show good results. Studies that report the outcome in patients who received both arthroscopic labral repair and a triple pelvic osteotomy (TPO) are lacking. The aim of this study is to investigate the short to midterm functional outcome and activity level in these patients., Methods: This case series retrospectively included 8 patients (2 male, 6 female) with acetabular dysplasia (lateral center-edge angle [LCEA] ≤ 25°) and a labral tear on magnetic resonance arthrography (MRA). All patients underwent arthroscopic labral repair followed by TPO after an average period of 3 months (range 2-6). Average age at the time of surgery was 25 years (range 15-37). Patients were followed up and the following main parameters were assessed: LCEA, modified Harris hip score (mHSS), Tegner score, UCLA score, patient satisfaction on a scale of 1-4., Results: The mean follow-up was 19 months (range 15-25). The mean LCEA increased from 18° to 37° (p < 0.0001). The mHSS improved from a mean of 79 to 94 on final follow-up (p = 0.00123). The Tegner and UCLA scores had a median of 4 and 5, respectively. The mean LCEA increased from 18° to 37° (p < 0.0001). The mean patient satisfaction was 3.6., Conclusion: Patients with evidence of a labral tear resulting from acetabular dysplasia benefit from arthroscopic repair followed by a TPO. The literature still lacks evidence that labral repair and reorientation osteotomy produce superior outcome compared to osteotomy alone. Treatment should consider clinical presentation in addition to radiological findings with emphasis on MRA., (© 2023. The Author(s).)