title: Cow horn used as a stimulating bone graft: a 20 year follow up.
mesh_terms: D000328:Adult; D000818:Animals; D001846:Bone Development; D001852:Bone Lengthening / Q000379:methods; D002417:Cattle; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D005500:Follow-Up Studies; D006733:Horns / Q000637:transplantation*; D006801:Humans; D010812:Physical Stimulation; D011051:Poliomyelitis / Q000601:surgery*; D011859:Radiography; D013997:Time Factors