title: Benign cortical defect: site for an avulsion fracture.
abstract: A benign cortical defect in a bone may present itself as a weak site for muscle attachment resulting in an avulsion injury. Such a benign cortical defect may be mistaken for a malignant tumor when the avulsion injury excites irregular, laminated periosteal reaction. We report three patients in whom avulsion fractures occurred at the site of pre-existing benign cortical defects in the distal femur.
authors.forename: R
authors.initials: R
authors.lastname: Kumar
authors.forename: L E
authors.initials: LE
authors.lastname: Swischuk
authors.forename: J E
authors.initials: JE
authors.lastname: Madewell
mesh_terms: D000293:Adolescent; D000328:Adult; D001845:Bone Cysts / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005264:Femoral Fractures / Q000000981:diagnostic imaging*; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging; D005269:Femur / Q000000981:diagnostic imaging; D006801:Humans; D007718:Knee Injuries / Q000000981:diagnostic imaging*; D008297:Male; D012516:Osteosarcoma / Q000000981:diagnostic imaging; D011859:Radiography; D014945:Wound Healing