Is acetabular morphology related to trochlear dysplasia?

Purpose: To evaluate the correlation between trochlear dysplasia and acetabular coverage.

Materials And Methods: 109 retrospective CT studies referred from the young adult knee clinic were independently reviewed by two observers. Anterior acetabular (AASA) and posterior acetabular (PASA) sector angles were calculated bilaterally on axial CT. Trochlear dysplasia was graded using the Dejour classification (A-D). ANOVA test was used.

Results: Dejour types A, B and D trochlear dysplasia were associated with a significantly increased AASA (P value = 0.0011).

Conclusion: Our results demonstrate a significant relationship between trochlear dysplasia and anterior acetabular coverage, as measured by AASA.