Isthmic spondylolisthesis treated with circumferential arthrodesis (ALIF and posterior fixation): correction, fusion and indirect decompression.

There is no consensus regarding the choice of the surgical technique for isthmic spondylolisthesis treatment, although they all aim to a common goal, achieving fusion at the index level while restoring an appropriate lordosis and remove potential radicular compression. Analyze outcome of circumferential arthrodesis (CA) with ALIF (Anterior Lumbar Interbody Fusion) and pedicle screw fixation for the treatment of all-grade isthmic spondylolisthesis, with indirect neurological decompression. Retrospective study of isthmic spondylolisthesis treated with CA, with one-year follow-up.

rhBMP-2 (Recombinant Human Bone Morphogenetic Protein-2) in real world spine surgery. A phase IV, National, multicentre, retrospective study collecting data from patient medical files in French spinal centres.

Background: This is a Phase IV, national, multicentre, retrospective study to observe the real-world use of rhBMP-2 in France.

Hypothesis: There was no statistical hypothesis, the statistical analyses were descriptive in nature.

Patients And Methods: Data was collected from patient medical files in 10 French spinal centres.

Radiologic adjacent segment degeneration 2 years after lumbar fusion for degenerative spondylolisthesis.

Introduction: Lumbar fusion is now a currently accepted treatment for degenerative lumbar spondylolisthesis (DLSP), but may induce adjacent segment degeneration (ASD). The present study hypothesis was that there are radiological parameters associated with ASD. The study objective was to determine predictive factors of ASD.

Reduction and fusion in high-grade L5-S1 spondylolisthesis by a single posterior approach. Results in 50 patients.

Introduction: Treatment strategies in high-grade L5-S1 spondylolisthesis are controversial. Reduction of slippage, correction of lumbosacral kyphosis and the necessity of a complementary anterior approach are debated in the literature. The present study reports clinical and radiological outcome for reduction and instrumented fusion on a single posterior approach.

Estimating the number of pure chemical components in a mixture by X-ray absorption spectroscopy.

Principal component analysis (PCA) is a multivariate data analysis approach commonly used in X-ray absorption spectroscopy to estimate the number of pure compounds in multicomponent mixtures. This approach seeks to describe a large number of multicomponent spectra as weighted sums of a smaller number of component spectra. These component spectra are in turn considered to be linear combinations of the spectra from the actual species present in the system from which the experimental spectra were taken.

Sacro-iliac joint arthroscopy for arthrodesis after traumatic dislocation. Cadaver and clinical feasibility study.

Background: Sacro-iliac arthrodesis usually requires an extended posterior approach, which is associated with a number of dreaded complications. Here, we assessed the feasibility of arthroscopic exploration of the dislocated sacro-iliac joint.

Materials And Methods: In the first step of our study, we used ligament section to induce loss of sacro-iliac joint coaptation in a cadaver.

Three-month antibiotic therapy for early-onset postoperative spinal implant infections.

Background: Optimal duration and modalities of antibiotic therapy for early-onset spinal implant infection (EOSII) remain controversial.

Methods: Between November 2004 and November 2007, we conducted a prospective, monocentric study to assess the efficacy of a 3-month course of antibiotics for patients diagnosed with EOSII, as defined by a proven deep infection of the surgical site occurring within 30 days after spinal instrumented surgery. All patients with EOSII underwent surgical debridement with implant retention.

Influence of transforaminal lumbar interbody fusion procedures on spinal and pelvic parameters of sagittal balance.

Introduction: Restitution of sagittal balance is important after lumbar fusion, because it improves fusion rate and may reduce the rate of adjacent segment disease. The purpose of the present study was to describe the impact of transforaminal lumbar interbody fusion (TLIF) procedures on pelvic and spinal parameters and sagittal balance.

Materials And Methods: Forty-five patients who had single-level TLIF were included in this study.

Hydatid disease drug therapy primarily to reconstruction of a multilevel thoracolumbar vertebral lesion.

We report, a very unusual case of multilevel vertebral hydatidosis adjacent to the thoracolumbar junction, without concomitant chord compression. Two months after initiating oral antiparasite treatment, the patient underwent resection of the lesion using a posterior approach, medullary decompression, and a T11-L3 instrumented arthrodesis. Arthrodesis via the anterior approach was performed at a later stage.

Infections in the operated spine: update on risk management and therapeutic strategies.

Unlabelled: Among the possible risks of spine surgery, surgical site infection (SSI) is far from negligible. Incidence is higher than in other locomotor system procedures, with more severe local and general impact. Certain broad guidelines can be formulated.

Incidence and predictors of missed injuries in trauma patients in the initial hot report of whole-body CT scan.

Background: Whole-body CT scan is the cornerstone of trauma-related injury assessment. Several lines of evidence indicate that significant number of injuries may remain undetected after the initial hot report of CT. Missed injuries (MI) represent an important issue in trauma patients, for they may increase morbidity, mortality and costs.

Convergence-optimized procedure for applying the NICA-Donnan model to potentiometric titrations of humic substances.

Despite the high success of the NICA-Donnan (N-D) model to describe the interaction of protons and metal ions with natural organic matter, the large number of fit parameters is a major hindrance to its capacity to provide unique numerical solutions. This well-known difficulty is reflected in the unusually low value of the generic proton binding constant for carboxylic-type groups of fulvic acid (pK(H1) = 2.34), and to some extent of humic acid (2.

Camptocormia: the bent spine syndrome, an update.

Camptocormia, also referred to as bent spine syndrome (BSS) is defined as an abnormal flexion of the trunk, appearing in standing position, increasing during walking and abating in supine position. BSS was initially considered, especially in wartime, as a psychogenic disorder. It is now recognized that in addition to psychiatric syndromes, many cases of reducible BSS have a somatic origin related to a number of musculo-skeletal or neurological disorders.

Odontoid process pathologic fracture in spinal tuberculosis.

Craniovertebral junction tuberculosis is a rare lesion in which treatment remains controversial. Options range from conservative treatment to surgery, independently of any associated neurological threat. We here report the first case of pathologic odontoid fracture in a context of spinal tuberculosis, complicated by unusual neurological evolution.

Number of independent parameters in the potentiometric titration of humic substances.

With the advent of high-precision automatic titrators operating in pH stat mode, measuring the mass balance of protons in solid-solution mixtures against the pH of natural and synthetic polyelectrolytes is now routine. However, titration curves of complex molecules typically lack obvious inflection points, which complicates their analysis despite the high-precision measurements. The calculation of site densities and median proton affinity constants (pK) from such data can lead to considerable covariance between fit parameters.

Oncogenous osteomalacia and myopericytoma of the thoracic spine: a case report.

Study Design: A case report.

Objective: To illustrate a rare case of oncogenous osteomalacia caused by a spinal thoracic myopericytoma.

Summary Of Background Data: Osteomalacia related to a tumor is well known.

Pelvic ring fractures internal fixation: iliosacral screws versus sacroiliac hinge fixation.

Introduction: Pelvic ring fractures are severe injuries whose functional results depend on the quality of reduction. Numerous internal fixation alternatives have been described, but the biomechanical studies comparing them remain rare.

Hypothesis: This study compared the biomechanical behavior of iliosacral screws (ISS) with sacroiliac hinge type fixation (SIF) following unstable pelvic ring fractures fixation.

Tracking the current rise of chinese pharmaceutical bionanotechnology.

Background: THE CONTEXT AND PURPOSE OF THE STUDY: Over the last decade China has emerged as a major producer of scientific publications, currently ranking second behind the US. During that time Chinese strategic policy initiatives have placed indigenous innovation at the heart of its economy while focusing internal R&D investments and the attraction of foreign investment in nanotechnology as one of their four top areas. China's scientific research publication and nanotechnology research publication production has reached a rank of second in the world, behind only the US.

[Spinal migration of a Kirschner wire after surgery for clavicular nonunion. A case report and review of the literature].

Kirschner wires (K-wires) are often used for osteosynthesis particularly in the upper limb. Postoperative K-wire migration through the tissues is a well-recognised and significant complication of surgery of the clavicle, the wire ending up in the lungs, the oesophagus, the aorta, or the subclavian artery. Localisation of a K-wire migration into the spinal cord is very rare.

Assessing the rotation of the spinal cord in idiopathic scoliosis: a preliminary report of MRI feasibility.

Purpose: Magnetic resonance imaging (MRI) quantification of the rotation of the spinal cord in patients with thoracic idiopathic scoliosis could also be used to detect different spinal cord rotational patterns.

Methods: Ten patients with a thoracic or thoracolumbar scoliosis had axial T2-weighted MRI. The rotation of the spinal cord and vertebra were measured.

[Paraplegia after interlaminar epidural steroid injection: a case report].

We report the first case of paraplegia observed after epidural steroid injection in the upper spine. The patient was a 42-year-old male who underwent surgery two years earlier for stenosis of the lumbar spine from L2 to the sacrum leading to early manifestations of an equina cauda syndrome. This first operation provided satisfactory function with complete resolution of the objective neurological symptoms.

The sagittal balance of the spine in children and adolescents with osteogenesis imperfecta.

In severe forms of osteogenesis imperfecta, multiple compression fractures of the spine, as well as vertebral height shortening could be responsible for an increased thoracic kyphosis or a diminished lumbar lordosis. Theses progressive changes in sagittal shapes of the trunk could be responsible for a global sagittal trunk imbalance. We compare the parameters of sagittal spinopelvic balance in young patients with OI to those parameters in a control group of healthy volunteers.

[Influence of disc height on outcome of posterolateral fusion].

Purpose Of The Study: Experimentally, posterolateral fusion only provides incomplete control of flexion-extension, rotation and lateral inclination forces. The stability deficit increases with increasing height of the anterior intervertebral space, which for some warrants the adjunction of an intersomatic arthrodesis in addition to the posterolateral graft. Few studies have been devoted to the impact of disc height on the outcome of posterolateral fusion.

[Long-term survival analysis after surgical management for degenerative lumbar stenosis].

Purpose Of The Study: The short- and mid-term symptom-relief of surgical treatment for lumbar stenosis is generally acknowledged, but the probability of a long-term reoperation remains to be studied. The purpose of this work was to determine the long-term risk of reoperation after surgical treatment of degenerative lumbar stenosis and to search for factors influencing this probability.

Material And Methods: All patients who underwent from 1989 to 1992 surgical treatment for degenerative lumbar spine stenosis were included in this work.

Is there a sagittal imbalance of the spine in isthmic spondylolisthesis? A correlation study.

Recent studies suggested a predominant role of spinopelvic parameters to explain lumbosacral spondylolisthesis pathogeny. We compare the pelvic incidence and other parameters of sagittal spinopelvic balance in adolescents and young adults with developmental spondylolisthesis to those parameters in a control group of healthy volunteers. We compared the angular parameters of the sagittal balance of the spine in a cohort of 244 patients with a developmental L5-S1 spondylolisthesis with those of a control cohort of 300 healthy volunteers.