Variation in lumbar regional kyphosis between supine and standing positions. Implications for spinal fracture management.

Purpose: The variation of lumbar lordosis between standing and supine position is poorly explored in literature. This study sought to analyze variation of lumbar regional angulations (RA) in healthy volunteers between standing and supine positions, according to pelvic incidence (PI).

Methods: This study included 171 patients who had an abdominal CT-scan in supine position and 879 healthy volunteers with full-body stereoradiographs.

Development and validity evidence of an interactive 3D model for thoracic and lumbar spinal fractures pedagogy: a first step of validity study.

Background: Thoracic and lumbar spinal fractures are common in trauma care, requiring accurate classification to guide appropriate treatment. While traditional teaching methods use static 2D images, there is a growing need for interactive tools to improve understanding. This study addresses the lack of interactive three-dimensional (3D) models for teaching the AO (Arbeitsgemeinschaft für Osteosynthesefragen) Spine classification for thoracic and lumbar fractures.

Proximal junctional kyphosis above long spinal fusions.

Introduction: Spinal deformity in adults is a major public health problem. After failure of conservative treatment, correction and fusion surgery leads to clinical and radiological improvement. However, mechanical complications and more particularly - proximal junctional kyphosis (PJK) - are common with an incidence of 10%-40% depending on the studies.

The Implications of Sacralized Transitional Vertebra on Spinal Alignment.

Study Design: Retrospective study of a multicentric prospective database.

Objective: This study aimed to determine, in a cohort of healthy volunteers, the impact of sacralized lumbo-sacral transitional vertebra (LSTV) on spinal alignment according to its grade, particularly regarding lumbar lordosis magnitude and distribution, and the implications for spinopelvic parameters measurement.

Summary Of Background Data: There is little data regarding spinopelvic alignment assessment in LSTV patients.

Pediatric spinal alignment and spinal development.

Background: Knowledge of the growth spurt and remaining growth is essential for managing musculoskeletal diseases in children. Accurate prediction of curve progression and timely interventions are crucial, particularly for conditions like adolescent idiopathic scoliosis (AIS).

Methods: This study conducted a comprehensive review and synthesis of existing literature on spinal growth, skeletal maturity classifications, and the evolution of sagittal alignment parameters during childhood and adolescence.

Readmission rate after adult scoliosis surgery on primary cases over 45 years-old with long term follow-up.

Purpose: Scoliosis surgery is becoming increasingly frequent. Rate of readmission is little discussed in the literature. It is an interesting data for the patient's information and for public authorities to calculate cost-effectiveness.

Sex-dependent evolution of whole-body postural alignment with age.

Purpose: The goal of this study was to explore sex-related variations of global alignment parameters and their distinct evolution patterns across age groups.

Methods: This multicentric retrospective study included healthy volunteers with full-body biplanar radiographs in free-standing position. All radiographic data were collected from 3D reconstructions: global and lower limb parameters, pelvic incidence (PI) and sacral slope (SS).

A comparison of idiopathic scoliosis surgery between teenage years and adulthood.

Purpose: Idiopathic scoliosis is an evolutive deformity during patient's life. In case of moderate deformity in a well aligned adolescent, it's a big concern to decide when to do the surgery. Objective of this work was to evaluate and compare clinical, radiological and surgical data of patients with adolescent idiopathic scoliosis operated in childhood (before 20 years) and those operated adults (after 35 years).

Full-body Postural Alignment Analysis Through Barycentremetry.

Study Design: A multicentric retrospective study.

Objective: The study of center of mass (COM) locations (ie, barycentremetry) can help us understand postural alignment. The goal of this study was to determine relationships between COM locations and global postural alignment x-ray parameters in healthy subjects.

Influence of pelvic tilt correction on PJK occurrence after adult spinal deformity surgery.

Introduction: Many risk factors for proximal junctional kyphosis (PJK) have been reported in the literature, especially sagittal alignment modifications, but studies on pelvic tilt (PT) variations and its influence on PJK are missing. Aim of this study was to analyze the influence of pelvic tilt correction, after long fusion surgery for ASD patients, on PJK occurrence.

Methods: A monocentric retrospective study was conducted on prospectively collected data, including 76 patients, operated with fusion extending from the thoraco-lumbar junction to the ilium.

Modern Concepts in Sagittal Curve Measurement: Comparison of Spline-Based and Fixed Landmark Measurements in a Cohort of 1520 Healthy Subjects.

Study Design: Retrospective multicenter study.

Objective: Our objective was to compare the spline-based measurement of sagittal spinal curvatures to fixed landmarks in a normative population.

Summary Of Background Data: Recent research has stressed the importance of considering sagittal curvature in its entirety using a spline reconstruction.

Pregnancy and childbirth after adolescent idiopathic scoliosis surgery: A study of 80 pregnancies.

Background: Adolescent idiopathic scoliosis (AIS) is a common spinal disease affecting 2% of adolescents, and women in 90% of the cases. When a surgical treatment is opted for, many questions are frequently asked by families and patients about the course of pregnancy and childbirth after the spinal fusion. This subject remains little studied in the literature, especially with modern instrumentation techniques.

Scoliosis.

Scoliosis is a three-dimensional spinal deformity that can occur at any age. It may be idiopathic or secondary in children, idiopathic and degenerative in adults. Management of patients with scoliosis is multidisciplinary, involving rheumatologists, radiologists, orthopaedic surgeons, and prosthetists.

Social media use among French spine surgeons: an underrated tool?

Purpose: The goal of this study was to determine the use of social media (SM) among the French spine surgeons.

Methods: In 2022, an online questionnaire has been sent to the community of French spine surgeons. All surgeons were asked to answer a 21-question survey about their use of SM in their daily practice.

Femoral neck version in the spinopelvic and lower limb 3D alignment: a full-body EOS study in 400 healthy subjects.

Background: The goal of this study was to better understand the variation of femoral neck version according to spinopelvic and lower limb 3D alignment using biplanar X-rays in standing position.

Methods: This multicentric study retrospectively included healthy subjects from previous studies who had free-standing position biplanar radiographs. Subjects were excluded if they presented spinal or any musculo-skeletal deformity, and reported pain in the spine, hip or knee.

Lumbar scoliosis and stenosis: What outcomes for which treatment? Analysis of three surgical techniques in 154 patients with minimum two-year follow-up.

Study Design: Prospective multicentric study.

Objective: This study goal was to analyze the clinical and radiographic outcomes of lumbar stenosis and scoliosis (LSS) patients, treated with lumbar decompression (LD), short fusion and decompression (SF) or long fusion with deformity correction (LF).

Hypothesis: Procedures without correction lead to poorer long-term outcomes.

Sagittal correction after short percutaneous fixation for thoracolumbar compression fractures: comparison of the combination of SpineJack® kyphoplasty and fractured vertebra screw fixation.

Purpose: The aim of this study was to compare two percutaneous pedicle fixations for the treatment of thoracolumbar fractures: one associating a jack kyphoplasty (SpineCut) and the other using intermediate screws (Trident).

Methods: All adult patients treated for single-level Magerl/AO type A thoracolumbar traumatic fractures in four orthopaedic departments, with SpineCut or Trident, with a one year minimum follow-up, were retrospectively included. Neurological disorders and osteoporotic fractures were not included.

Surgical treatment of degenerative lumbar spondylolisthesis: Effect of TLIF and slip reduction on sagittal alignment.

Introduction: The surgical treatment of lumbar degenerative spondylolisthesis (LDS) remains controversial. The aim of this study was to determine the effect of adding transforaminal lumbar interbody fusion (TLIF) to posterolateral fusion (PLF) on the local lordosis, sagittal alignment and potential complications. The second aim was to evaluate the effect of slip reduction on the same parameters.

Pedagogy in spine surgery: developing a free and open-access virtual simulator for lumbar pedicle screws placement.

Purpose: Simulators for pedicle screws placement range from basic sawbones to virtual reality. Yet, they remain expensive and often require specific devices. No free online virtual simulator has yet been developed.

Implant removal after short percutaneous pedicle fixation associated with SpineJack kyphoplasty: is correction sustained?

Purpose: This study objective was to evaluate sagittal correction loss after instrumentation removal in patients treated for thoracic or lumbar compression fractures treated with SpineJack kyphoplasty associated with short percutaneous pedicle screw fixation.

Methods: This retrospective multicenter study was carried out in three major French trauma centers. All patients with a single type A thoracic or lumbar fracture, treated by the studied technique between 2017 and 2020, have been included.

Impact of a multidisciplinary team meeting on patient-reported outcomes at 2 years after lumbar surgery: A prospective comparative exploratory study.

Failed back surgery syndrome is a challenge. We hypothesized that a multidisciplinary team meeting (MTM) may be useful to select patients who are the most likely to benefit from lumbar surgery. We conducted an observational, prospective, comparative, exploratory study.

Benefit-risks analysis of thoracoplasty in adolescent idiopathic scoliosis treated by sublaminar bands.

Introduction: Cosmetic concerns are one of the main complaints of patients with adolescent idiopathic scoliosis (AIS). Several studies have shown a significant improvement in self-image scores after thoracoplasty. However, the effects of thoracoplasty on pulmonary function and clinical outcomes remain debated.