title: Postmeniscectomy osteonecrosis.
abstract: In the last few years, postmeniscectomy osteonecrosis has been reported, especially in elderly patients, with low incidence, unclear physiopathology, and without long periods of follow-up. We report a case diagnosed and followed-up for a 3-year period using magnetic resonance imaging. In the initial phase, a large area of intramedullary edema was evident; after 3 months, the edema had decreased (it was no longer evident at 1 year examination) and a clearly defined area of osteonecrosis was evident with very high signal intensity on high-contrast sequences. After 3 years, the lesion showed a degenerative cyst appearance with an osteosclerotic rim and completely disrupted cartilage.
authors.affiliation: Department of Radiology, Adelaide C.T.O. Hospitals, Torino, Italy. falettic@atlink.it
authors.forename: Carlo
authors.initials: C
authors.lastname: Faletti
authors.forename: Tiziana
authors.initials: T
authors.lastname: Robba
authors.forename: Paola
authors.initials: P
authors.lastname: de Petro
mesh_terms: D000368:Aged; D018771:Arthralgia / Q000209:etiology; D001182:Arthroscopy; D006801:Humans; D007719:Knee Joint / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008592:Menisci, Tibial / Q000601:surgery*; D010020:Osteonecrosis / Q000150:complications / Q000209:etiology* / Q000473:pathology*; D011183:Postoperative Complications / Q000473:pathology*; D013997:Time Factors