title: Five additional cases of local fibrocartilaginous dysplasia.
abstract: Focal fibrocartilaginous dysplasia has previously been described as an etiology of genu varum deformity in children at about walking age. We have found 20 cases in the literature, and all of them were located in the medial proximal tibial metaphysis. We report five additional cases of this entity. The patients had a genu varum deformity, and the angulation was at the site of the bone lesion. Four cases were in the tibia, and one case was in the distal medial femoral metaphysis. Age at diagnosis ranged from 13 to 24 months. A cortical defect with surrounding sclerosis was observed on radiographs. The angulation usually progressed initially, and spontaneous resolution was observed in two cases at last follow-up. Open biopsy and tibial valgus osteotomy were performed in two cases. The unusual femoral case was also treated with open biopsy and medial hemicircumferential periosteal release. Spontaneous remodeling of varus angulation and resolution of bony defect may be expected in most cases, and osteotomy can be avoided.
authors.affiliation: Pediatric Orthopaedic Division, Hospital Niño Jesús, Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Albiñana
authors.forename: M
authors.initials: M
authors.lastname: Cuervo
authors.forename: J A
authors.initials: JA
authors.lastname: Certucha
authors.forename: I
authors.initials: I
authors.lastname: Gonzalez-Mediero
authors.forename: J C
authors.initials: JC
authors.lastname: Abril
mesh_terms: D002357:Cartilage Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D005357:Fibrous Dysplasia of Bone / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D007223:Infant; D016916:Joint Deformities, Acquired / Q000209:etiology / Q000601:surgery; D007719:Knee Joint / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D011859:Radiography; D013977:Tibia / Q000000981:diagnostic imaging / Q000473:pathology