Does Labral Size Correlate With Degree of Acetabular Dysplasia?
Authors: Gupta A, Chandrasekaran S, Redmond JM, Hammarstedt JE, Cramer TL, Liu Y, Domb BG
Purpose
To investigate the correlation between acetabular labral size and the degree of hip dysplasia on radiographs.
Methods
Prospective study of 130 patients undergoing hip arthroscopy with arthroscopic labral measurements across four quadrants and correlation with radiographic dysplasia parameters (LCEA, AI, ACEA).
Key Findings
- Dysplastic hips (LCEA ≤ 25°) demonstrated significantly larger labral size in all quadrants.
- Increased AI (>10°) correlated with larger posteroinferior labrum.
- Decreased ACEA (≤ 20°) correlated with larger anteroinferior and posteroinferior labra.
What Does This Mean for Providers?
- Labral hypertrophy should be expected in dysplastic hips and is likely a compensatory mechanism for deficient bony coverage.
- Recognition of labral size variations can inform surgical planning, particularly decisions regarding labral repair versus reconstruction.
- This data underscores the importance of detailed labral assessment in hip preservation surgery.