Learn More
Adjacent segment degeneration following lumbar spine fusion remains a widely acknowledged problem, but there is insufficient knowledge regarding the factors that contribute to its occurrence. The aim of this study is to analyse the relationship between abnormal sagittal plane configuration of the lumbar spine and the development of adjacent segment(More)
This study is a retrospective multi-centre analysis of changes in spino-pelvic sagittal alignment after surgical correction of L5-S1 developmental spondylolisthesis. The purpose of this study was to determine how sagittal spino-pelvic alignment is affected by surgery, with the hypothesis that surgical correction at the lumbo-sacral level is associated with(More)
A new device made of piezoelectric ceramic placed in a semispherical dish and focussed at 320 mm was developed in order to generate heat and cavitation responsible for coagulative necrosis of deep tissues. The target to be treated is located with a central ultrasound probe of 3.5 MHz. In vitro studies with polyurethane phantoms showed that the ultrasound(More)
STUDY DESIGN A retrospective study of the sagittal alignment in developmental spondylolisthesis. OBJECTIVES To investigate the role of pelvic anatomy and its effect on the global balance of the trunk in developmental spondylolisthesis. SUMMARY OF BACKGROUND DATA Pelvic incidence (PI) is a fundamental anatomic parameter that is specific and constant for(More)
Few histological studies on bone substitutes in human cervical spine are available and the biological processes of bone substitutes are not well documented. The authors studied four failure cases of cervical interbody fusion: two cases with hydroxyapatite (HA), one case with beta-tricalcium phosphate ceramic (beta-TCP) and one case with xenograft (bovine(More)
A system generating focused elastic ultrashort waves has been developed with the aim to destroy tumors by an extracorporeal way. Experimental studies on different targets (plastic phantoms, organ samples and normal live tissues in pigs) have been done showing the good focusing of the device and the possibility of getting a focal tissular coagulative(More)
PURPOSE OF THE STUDY The aim was to determine the usefulness of a flexible stabilization system associated with neural decompression in the treatment of lumbar spinal stenosis. 2 points were especially studied: low back pain at follow up and Graf system ability to prevent postoperative instability. PATIENTS AND METHODS 26 patients were screened(More)
OBJECTIVES The authors evaluated the reliability in obtaining a posterolateral spinal arthrodesis (PSA) with autologous bone graft. SUMMARY OF BACKGROUND DATA Posterolateral spinal arthrodesis using autogenous cancellous bone graft is the most simple and efficient technique to get a spinal graft. No extensive biomechanical study of PSA is available. Thus,(More)