Intraoperative changes of surgical approach and a second surgery after percutaneous endoscopic surgery for lumbar spinal stenosis LianSong Lu; ZhenShan Yuan; HaoJie Li; ShaoHua Sun;

Surgical complications in the first and second semesters of the general surgery medical residence. A study of 14063 cases Bruno Henrique Alvarenga; Izabel Cristina Rios; Francisco de Salles Collet e Silva; Edivaldo Massazo Utiyama;

Revision knee arthroplasty using a modular system manufactured in Brazil. Clinical and radiographic results with a mean nine-year follow-up Francisco Fontes Cintra; Mauricio Etchebehere; Eduardo Rached; Giancarlo Cavenaghi; Paulo Eduardo Dias Rahal; Rodrigo Gonçalves Pagnano;