Patient 6 was a 61-year-old Caucasian man operated on the right hip. The paired components in the initial surgery were ceramic-on-polyethylene, and the reason for revision was loosening of the cup. He received a titanium sleeve size XL, and no additional screws were required. His HHS increased from 50 before surgery to 90 at the 2-year follow-up examination. His VAS score for pain improved from 6.0 to 1.0, and his VAS score for satisfaction rose from 7.0 to 9.0. This patient showed a grade I heterotopic ossification according to the Brooker classification [].
Patient 5 was a 53-year-old Caucasian woman operated on the right hip. The paired components in the initial surgery were ceramic-on-polyethylene, and the reason for revision was loosening of the cup. The patient received a titanium sleeve size XL, and two additional screws were required. Her HHS increased from 56 before surgery to 91 at the 2-year follow-up visit. Her VAS score for pain improved from 5.0 to 0.0, and her VAS score for satisfaction went up from 5.0 to 10.0. No heterotopic ossification was observed.