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Late follow-up of ORTHO2 patients (last update, January 2020): One case with early progression to the next stage without collapse after five years (case 105). Three cases of THR during the first year of the clinical trial (cases 203, 312, 502). One case drop-out at 3 months (case 307), healing confirmed at 5 years. One case drop-out at 5 months (case 602), underwent THR in the first year. One case healed at 2 years (case 501), lost to follow-up at 5 years.
