ChondroFiller injection for hip cartilage defectsChondroFiller is an injectable collagen scaffold that repairs hip cartilage by recruiting the body's own repair cells; delivered under local anaesthesia as an outpatient procedure, it shows 70–85% symptom relief in small published series, though long-term data beyond five years are absent.ChondroFiller is an injectable collagen scaffold that repairs hip cartilage by recruiting the body's own repair cells; delivered under local anaesthesia as an outpatient procedure, it shows 70–85% symptom relief in small published series, though long-term data beyond five years are absent.