Clinical Outcomes of Arthroscopic Femoroacetabular Impingement Surgery for Adolescent Patients With Borderline Hip Dysplasia With a Minimum 5-Year Follow-up
Haruki Nishimura, Eddie K. Afetse, Jarrod Brown, Nicholas A. Felan, Alexander R. Garcia, Naomasa Fukase, Heath Melugin, Alyson Speshock, Grant J. Dornan, Marc J. PhilipponBackground:
The relationship between borderline developmental dysplasia of the hip (BDDH) and concomitant femoroacetabular impingement (FAI) has not been established in the adolescent population.
Purpose:
To compare the minimum 5-year outcomes after primary hip arthroscopy in adolescent patients with BDDH and FAI to those with FAI alone.
Study Design:
Cohort study; Level of evidence, 3.
Methods:
A retrospective review of 122 adolescent patients who underwent primary hip arthroscopy for FAI by the senior author between February 2007 and December 2016 was conducted. Eligible patients who were ≤19 years of age and whose proximal femoral physis had not yet closed and who completed a minimum 5-year follow-up were included. Then, patients with BDDH (lateral center-edge angle [LCEA], 18°-25°) were compared with patients without BDDH (LCEA, ≥25°). Outcome scores, including the modified Harris Hip Score (mHHS), Hip Outcome Score Activities of Daily Living (HOS-ADL), Hip Outcome Score Sport-Specific Subscale (HOS-Sport), Short Form-12 scores, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score were prospectively collected.
Results:
In total, 23 patients with BDDH and 67 patients without BDDH were included. The mean follow-up times for those with and without BDDH were 6.60 years (range, 5.24-9.73 years) and 8.17 years (range, 6.39-10.08 years), respectively (
Conclusion:
Hip arthroscopy for FAI in growing adolescents with BDDH is safe and effective and yields equivalent achievement in PASS and MCID with clinical outcomes when compared to adolescents without BDDH.