Daniel H. Chopin

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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)
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)
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)
STUDY DESIGN A multicentric retrospective study on primary adult scoliosis patients operated on between 2002 and 2007. A 3-step statistical analysis was performed to describe the incidence of complications, the risk factors, and the reoperation risk with survival curves for the entire cohort. OBJECTIVE To describe complication rate and risk factors as(More)
STUDY DESIGN A retrospective analysis of patients with idiopathic scoliosis treated with Schollner costoplasty. OBJECTIVE To evaluate the long-term effects of Schollner costoplasty on rib hump and respiratory function SUMMARY BACKGROUND DATA Costoplasty is an established technique to improve chest wall deformity in patients with scoliosis. Concerns have(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)
OBJECTIVES The authors evaluated two bone substitutes in a posterolateral spinal arthrodesis (PSA) model in sheep: coral porites (99% calcium carbonate, Biocoral, Inoteb, France) and a biphasic ceramic (BCP) (65% hydroxyapatite and 35% B tricalcium phosphate, Triosite, Zimmer International). SUMMARY OF BACKGROUND DATA Bone substitutes would be of great(More)
INTRODUCTION The increasing life expectancy of the population and the improvement in surgical and medical management of elderly patients mean that the indication for surgical treatment of adult lumbar and thoracolumbar scolioses has been extended. However the benefit/risk ratio of these procedures is still under debate. MATERIALS AND METHODS We reviewed(More)