| | Table of contents Coluna/Columna vol.11 no.2 São Paulo Apr./June 2012 Editorial Sarramea, Horacio
| | | | Original Articles | | | | | | · Subaxial cervical spine instability due to failure of posterior tension band: arthrodesis with Magerl technique. preliminary results in the short term Quiroz, Javier; Laluf, Alejandro; Sisi, Tamara; Coombes, Nicolas; Manzone, Patricio
| | | | | | · Results of a survey on the treatment of thoracic Scheuermann´s kyphosis Silveri, Claudio; Cúneo, Alejandro; Silveri, Asdrúbal
| | | | | | · 360 degrees surgery in the treatment of high-grade lumbosacral spondylolisthesis: surgical technique only by posterior approach Díaz, Salvador Mattar; Ojeda, David Nicolás Esmeral; Payamps, Francisco Basora
| | | | | | · Risk factors for recurrent lumbar disc herniation Segura, Angel Rodríguez; López, Enrique Medellín; Sosa, Roberto Chapa
| | | | | | · Adjacent segment disease Martin, Gustavo; Gille, Oliver; Vital, Jean Marc
| | | | | | · Scoliosis and Prader-Willi syndrome: review of five cases treated surgically Pedrals, Jose Grass; Marcuson, Karen Weissmann; Gallegos, Veronica Herrera
| | | | | | · Postoperative distal decompensation (PDD) in lenke 1a curvatures treated with pedicular screws: analysis of 63 cases Ventura, Norberto; Ey-Batlle, Anna; Vilalta, Imma; Alonso, Itziar
| | | | | | · Lessons learned on cervical total disc replacement after 7-year follow-up Coutinho, Thiago; Oliveira, Leonardo; Marchi, Luis; Amaral, Rodrigo; Castro, Carlos; Coutinho, Etevaldo; Pimenta, Luiz
| | | | | | · Adult lumbosacral isthmic spondylolisthesis: laminectomy/arthrectomy and in situ fusion Manzone, Patricio; Ihlenfeld, Claudia; Ávalos, Eduardo Mariño; Gemetro, José Felipe
| | | | | | · Analysis of the behavior of the lumbar segment without spinal fusion in adolescent idiopathic scoliosis with curvature of lenke type 1 Siderakis, Nicolás; Aguilar, Ariel; Dinelli, Dino; Lutzky, Lázaro; Reviriego, Juan; Escalada, María; Rositto, Gabriel; Legarreta, Carlos
| | | | | | · Evaluation of the intersomatic fusion with TLIF technique and PEEK cages: is the dynamic X Ray useful for the diagnosis for intersomatic fusion in instrumented patients? Ferrer, Alejandro; Demonti, Hernán; Fiorillo, Pablo
| | | | | | · Evaluation of a new systematization of tests for the diagnosis of vertebral destruction syndrome Aguirre, Armando Alpizar; Olivares, Luis Miguel Rosales; Bringas, Guadalupe Sánchez; Kalfopulos, Barón Zarate; García, Josue Giovanni Escutia; Sánchez, Alejandro Reyes
| | | | | | · Comparative analysis in patients with pure degenerative lumbar stenosis (EDLP) and stenosis secundary to degenerative lumbar spondilolisthesis (ELDL) surgically treated between 2008-2011 at the Hospital Metropolitano, Quito, Ecuador Torre, Sebas tián De la; Moyano, Jaime; Ahtty, Edison; Bilbao, Madelin
| | | | | | · Spinopelvic fixation in Adults: selection criteria Rüdt, Tomás; Zisuela, Roberto Gustavo; Kahl, Guillermo; Santi, Maximiliano
| | | | | | · Clinical and radiological evaluation of patients treated with posterolateral vs circumferential arthrodesis in the lumbosacral spine: 10 years of experience Barrera, Albaro; Chacón, José Gregorio; Vásconez, Pablo; García, Yaidelys
| | | | | | · Clinical and radiologica outcomes in series of anterior cervical fusion with intersomatic cage and plate Lalanne, Lyonel Beaulieu; Ocampo, Gonzalo Arriagada
| | | | | | · Predictive value of electrical stimulation in cases of malposition of thoracic pedicle screws in spine surgery García, Pedro Cortés; Pérez, Mario Herrera; Lorensu, Pedro Pérez; Rodríguez, Bernabé Déniz; Hernández, Patricia Sánchez; Rodrigo, Ángeles Ayala
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