Latest Paper: Int Orthop. 2008 May 14; : 18478229 ( P , S , E , B , D ) Open resection of osteoid osteoma guided by a gamma-probe. [My paper] Raphael Pratali , Guilherme Zuiani , Mauro Inada , Carlos Hanasilo , Luciano Reganin , Elba Etchebehere , Maurício Etchebehere Ortopedia e Traumatologia, FCM UNICAMP, Tessalia Vieira de Camargo, 126. Cidade Universitária, Campinas, 13081-970, Brazil, rpratali@fcm.unicamp.br. Osteoid osteoma is the third most common type of bone tumour. Radiofrequency ablation and other percutaneous procedures are the treatment of choice. However, in some sites these methods are difficult or dangerous. Our objective of this study was to evaluate whether open resection and intraoperative nidus detection with a hand-held gamma probe is an efficient method for treating this type of tumour. Fifty-three patients with osteoid osteomas were submitted to surgical treatment. The first group (gamma group) consisted of 34 patients submitted to open nidus resection guided