title: Congenital pseudoarthrosis of the tibia treated with low-intensity pulsed ultrasound stimulation (LIPUS).
abstract: A 16-year-old Japanese boy was admitted to our institution in September 2000 because no apparent callus had appeared around a fracture after 6 weeks of cast fixation. Physical examination revealed a tenderness of the right lower leg, and multiple small subcutaneous tumors and café-au-lait spots in extremities and trunk. Radiographs showed the fracture of the right lower tibia with bony sclerosis and a localized fusiform osteolytic lesion at the fracture site. The affected tibia bowed anteriorly and the medullary space in the lower tibia was narrow. A diagnosis of Boyd type IV congenital pseudoarthrosis of the tibia was made. Treatment with low-intensity pulsed ultrasound (US) stimulation (LIPUS) was administered for 20 min/day, and a nonweight-bearing gait was continued with a cast or brace fixation. At 6 months after the treatment, a small amount of bridging callus was seen. We continued the treatment for 1 year until the solid fusion was observed on radiographs and the patient started full-weight-bearing.
authors.affiliation: Department of Orthopedic Surgery, Akita University School of Medicine, Akita, Japan. cshokada@med.akita-u.ac.jp
authors.forename: Kyoji
authors.initials: K
authors.lastname: Okada
authors.forename: Naohisa
authors.initials: N
authors.lastname: Miyakoshi
authors.forename: Shu
authors.initials: S
authors.lastname: Takahashi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ishigaki
authors.forename: Jun
authors.initials: J
authors.lastname: Nishida
authors.forename: Eiji
authors.initials: E
authors.lastname: Itoi
mesh_terms: D000293:Adolescent; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D011542:Pseudarthrosis / Q000151:congenital* / Q000175:diagnosis / Q000628:therapy*; D013978:Tibial Fractures / Q000151:congenital* / Q000175:diagnosis / Q000628:therapy*; D013997:Time Factors; D014464:Ultrasonic Therapy / Q000379:methods*