Table V.

Zone-specific chondrophobic acetabular rim drilling^*

Anterior zone	Drill path parallel to floor
Superior zone	Fluoroscopic divergent drill path
Posterior zone	Divergent drill path**

*via mid-anterior or modified mid-anterior portal. **The posterior-most drill site is the most challenging and should be done before the final drill site. If done as the final drill site, anchor spacing may dictate that far-posterior drilling is done in a region most susceptible to posterior wall fracture with compromised labral refixation.