title: A rare periosteal diaphyseal lesion of the ulna.
abstract: Periosteal lesions of the ulna diaphysis are rare, include a wide spectrum of tumors, and may cause considerable diagnostic problems. Surgical treatment may vary widely, based on an accurate diagnosis. We present the case of a periosteal, extraskeletal low grade myxoid chondrosarcoma of the ulna diaphysis. The surgical therapy included an en-bloc resection with allograft reconstruction. The patient showed a favorable outcome. Careful preoperative evaluation and planning are imperative to obtain a satisfactory oncological and functional outcome, especially with uncommon tumor presentations at rare locations.
authors.affiliation: Department of Orthopaedics, Balgrist University Hospital, Zurich, Switzerland.
authors.forename: Matthias
authors.initials: M
authors.lastname: Erschbamer
authors.forename: Beata
authors.initials: B
authors.lastname: Bode
authors.forename: Florian M
authors.initials: FM
authors.lastname: Buck
authors.forename: Bruno
authors.initials: B
authors.lastname: Fuchs