title: Osteonecrosis of the patella in patients with nontraumatic osteonecrosis of the femoral head: MRI findings in 60 patients.
abstract: We examined both knees in 60 patients with nontraumatic osteonecrosis of the femoral head with three-dimensional MRI. We found osteonecrosis of the patella in 9 patients (10 knees) and osteonecrosis of the femoral or tibial condyles/metaphyses in 35 patients (61 knees). In the patella, the necrosis was located in the proximal half and tended to develop in patients with other necrotic lesions in the knee.
authors.affiliation: Department of Orthopaedic Surgery, Osaka University Medical School, Suita, Japan. tsakai@ort.med.osaka-u.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Sakai
authors.forename: N
authors.initials: N
authors.lastname: Sugano
authors.forename: T
authors.initials: T
authors.lastname: Nishii
authors.forename: K
authors.initials: K
authors.lastname: Haraguchi
authors.forename: H
authors.initials: H
authors.lastname: Yoshikawa
authors.forename: K
authors.initials: K
authors.lastname: Ohzono
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005271:Femur Head Necrosis / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010020:Osteonecrosis; D010329:Patella / Q000473:pathology*; D012189:Retrospective Studies