title: Case of juxta-articular osteoid osteoma of calcaneus mimicking arthritis.
abstract: Juxta-articular osteoid osteoma is a rare disorder that is difficult to correctly diagnose at an early stage. We report a case of osteoid osteoma in the calcaneus that arose near to the talocalcaneal joint. An 18-year-old female presented with symptoms of joint swelling and effusion similar to those of monoarthritis. Conservative treatment proved ineffective in achieving pain relief, and she underwent surgery 6 months later. The lesion was diagnosed by histologic examination, and it resolved after resection of the tumor.
authors.affiliation: Department of Orthopaedic Surgery, Fujisawa City Hospital, Fujisawa City, Japan. m_aratake@yahoo.co.jp
authors.forename: Masato
authors.initials: M
authors.lastname: Aratake
authors.forename: Mitsuhashi
authors.initials: M
authors.lastname: Shigeyuki
authors.forename: Honda
authors.initials: H
authors.lastname: Atsushi
authors.forename: Ryohei
authors.initials: R
authors.lastname: Takeuchi
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Saito
mesh_terms: D000293:Adolescent; D001168:Arthritis / Q000175:diagnosis; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000601:surgery; D002111:Calcaneus / Q000473:pathology* / Q000601:surgery*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007085:Ilium / Q000637:transplantation; D008279:Magnetic Resonance Imaging; D010017:Osteoma, Osteoid / Q000175:diagnosis* / Q000601:surgery; D013640:Tarsal Joints