D'Angelo G, Donzelli O
Divisione di Ortopedia Infantile, Istituti Ortopedici Rizzoli, Bologna.
Chir Organi Mov. 1998 Jul-Sep;83(3):303-8.
The authors describe a case of lumbar vertebral osteoid osteoma localized in the body of L5 characterized by a very subtle clinical onset (limping as a result of poor positioning of the hip), and by a clinical course where pain was totally absent.