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[In vivo characteristics of spinal kinematics in senile degenerative lumbar spondylolysis].

Objective: To investigate the in vivo kinematics of the lumbar degenerative spondylolysis (LDS) in senile patients. Methods: From March to October in 2014, nine L(4-5) LDS patients [mean age (74±9) years] and nine healthy volunteers [mean age, (54±4) years] were recruited. Combined fluoroscopy and CT scanning technique were used to obtain the three dimension kinematic data of the vertebral anatomical structures (vertebral body anterior margin, vertebral body posterior margin, facet joints and spinous process) in various postures (supine, standing, flexion and extension) under physical loads, a…

The position of the lumbar vertebrae in relation to the intercrestal line.

OBJECTIVE: To determine the position of the lumbar vertebrae in relation to the intercrestal line and variation in distance between the midpoint of the L(4/5) interspinous space and the intercrestal line in varying patients age groups of Thai people. MATERIAL AND METHOD: The present study was a retrospective analysis of the antero-posterior and lateral lumbosacral vertebral radiographs of 270 patients, varying patients' age from 20 to 80 years. Intercrestal line was drawn connecting the two highest points on the iliac crests of antero-posterior radiographs. The distance from the intercrestal

Prevalence and risk factors of vertebral fracture in female Japanese patients with systemic lupus erythematosus.

OBJECTIVE: We examined the prevalence and risk factors of vertebral fracture in female Japanese patients with systemic lupus erythematosus (SLE). METHODS: We performed lateral radiographs of the thoracic and lumbar spine and bone mineral density (BMD) measurements and collected demographic, lifestyle, clinical, and treatment characteristics of 52 SLE patients. Vertebral fractures were defined as a >20% reduction of vertebral body height. Odds ratios (ORs) and their 95% confidence intervals (CIs) were computed to assess the strength of associations between vertebral fractures and selected fact…

Study of a novel Ca/P/S-based cement implanted in the osteoporotic goat spine and its clinical application in preventing adjacent vertebral fractures.

Osteoporotic vertebral compression fracture (OVCF) has been increasing over the last decades. In addition to primary OVCF, the adjacent vertebral fracture (AVF) is a frequent serious complication in OVCF patients receiving percutaneous vertebroplasty or kyphoplasty, resulting in poor long-term outcome and recurrent symptoms. The aim of the present study is to investigate the bone regeneration behavior of a novel Ca/P/S-based resorbable cement (Ezechbone® Cement CBC-400) implanted into surgically created vertebral defects of ovariectomized (OVX) goats. Furthermore, the present study provides a

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… From the healthy control goat and the OVX goat without surgical treatment, the L3 vertebral bodies were taken for the study. The vertebral bodies were taken from the sections close to the middle of the implant site, as illustrated in Figure 1 . … As a final remark, when implanted, the CBC-400 cement is nondispersive and safely confined within the surgically created bone cavity in the osteoporotic goat’s vertebral body. …

Teriparatide alone versus vertebroplasty on pain control and radiographic outcomes after osteoporotic vertebral compression fracture.

PURPOSE: To investigate efficacy of 3-month teriparatide(TPD) and compare this treatment with vertebroplasty in terms of clinical and radiog … month, but did not show difference at 3 and 6 months after diagnosis. In TPD cases, progression of vertebral body collapse was noted in terms of middle body height and wedge angle at final follow up. Instead, both middle body height and wedge angle increased significantly after operation in the vertebroplasty group. Fracture non-union was confirmed via MRI and …

Kyphoplasty does not maintain all restored height postoperatively: a prospective, comparative study.

From January to December 2008, balloon kyphoplasty was performed on 45 consecutive female patients with primary single-segment vertebral compression fractures as an inpatient procedure. All of the treated vertebral bodies were located within the thora-columbar region (T11-L2). Demographic data such as age, body mass index, fracture age, hospital stay, lumbar spine bone mineral density, and amount of bone cement injected per vertebrae were recorded. Patients were analyzed clinically by ambulatory status and the visual analog scale (VAS) for pain. Lateral radiographs were used to measure changes

Critical appraisal of physical rehabilitation measures after osteoporotic vertebral fracture.

Osteoporosis is asymptomatic until fracture occurs. Fracture of the vertebral bodies can be "silent" and is diagnosed incidentally on radiographic visualization. The occurrence of spontaneous vertebral fracture in an otherwise healthy individual is considered pathognomonic of spinal osteoporosis. Osteoporotic vertebral fractures and kyphotic posture are no longer disorders about which nothing can be done. Resistive training exercises can decrease the risk of vertebral fractures. Proprioception generated within joints, ligaments, and muscles contributes to awareness of the relative orientation

[Treatment of severe vertebral compressive fractures in the elderly with percutaneous vertebroplasty].

OBJECTIVE: To evaluate the efficacy of treating severe and chronic vertebral compressive fractures in the elderly with percutaneous vertebroplasty. METHODS: Sixteen patients who suffered from severe back pain and whose daily living was badly affected were retrospectively reviewed. The average age was 72.5 years, the average disease history was 19 months, and the average compressive rate of the affected vertebral bodies was 74.1%. RESULTS: Nineteen affected compressive vertebral bodies in 16 cases were treated with percutaneous vertebroplasty. All the procedures were successful without any co

[Percutaneous transpedicular vertebroplasty for treatment of osteoporosis-induced vertebral fractures].

Osteoporosis plays an increasing medical, social, and economic role in our society. Vertebral body fractures are the most common fractures, along with fractures around the hip joint, and fractures of the distal radius due to osteoporosis. An osteoporotic vertebral compression fracture can lead to incapacitating back pain and immobility and often requires in-hospital treatment. Vertebroplasty is an effective procedure consisting of the percutaneous injection of polymethylmethacrylate (PMMA) cement into vertebral bodies. Preliminary studies showed promising clinical results with this new techniq…

Total joint replacement of the lumbar spine: surgical technique and procedural details.

Surgical arthrodesis of the degenerative lumbar spine eliminates natural mobility across the motion segment and permanently alters the stres … by device implantation to accomplish a lumbar motion segment reconstruction. A three-column pedicle vertebral body osteotomy (PVBO) is undertaken of the superior portion of the vertebral body and pedicle of the lower level as additional surgical preparation as well as keel cuts, soft tissue tensioning of the collapsed disc space, and height and length trialing. …

Validation of an automated spinal fusion finite element modeling framework for the prediction of pedicle screw loosening.

This study aimed to validate a patient-specific biomechanical simulation pipeline for predicting pedicle screw loosening risk in posterior spinal fusion. In particular, the research questioned whether this simulation, which integrates CT-derived bone properties, musculoskeletal force data, and finite element analysis, can outperform conventional CT attenuation measurements taken in both the vertebral body and along the planned screw trajectory. We conducted a retrospective database analysis, including patients who underwent lumbar spinal fusion with preoperative and postoperative CT scans. Scr…

The Human Lumbar Spine During High-Rate Under Seat Loading: A Combined Metric Injury Criteria.

Modern changes in warfare have shown an increased incidence of lumbar spine injuries caused by underbody blast events. The susceptibility of the lumbar spine during these scenarios could be exacerbated by coupled moments that act with the rapid compressive force depending on the occupant's seated posture. In this study, a combined loading lumbar spine vertebral body fracture injury criteria (Lic) across a range of postures was established from 75 tests performed on instrumented cadaveric lumbar spine specimens. The spines were predominantly exposed to axial compressive forces from an upward ve…

Thoracic epidural catheter placement using a paramedian approach with cephalad angulation in three dogs.

OBJECTIVE: To describe a technique for insertion of a thoracic epidural catheter. STUDY DESIGN: Clinical report. ANIMALS: Dogs (n = 3) undergoing thoracic wall resection and thoracotomy. METHODS: A paramedian approach with cephalic angulation was used to place a 24-g epidural catheter in 3 dogs. Dogs 1 and 2 had left caudal thoracic wall resection and dog 3 had left thoracotomy. In dog 1, the epidural catheter was inserted at L2-L3 intervertebral space and the tip of the catheter advanced to the level of T13 vertebral body. In dog 2, the epidural catheter was inserted at T12-T13 interverteb…

Vertebral stiffness measured via tomosynthesis-based digital volume correlation is strongly correlated with reference values from micro-CT-based DVC.

Digital tomosynthesis (DTS) is a clinically available modality that allows imaging of a patient's spine in supine and standing positions. The purpose of this study was to establish the extent to which vertebral displacement and stiffness derived from DTS-based digital volume correlation (DTS-DVC) are correlated with those from a reference method, i.e., microcomputed tomography-based DVC (μCT-DVC). T11 vertebral bodies from 11 cadaveric donors were DTS imaged twice in a nonloaded state and once under a fixed load level approximating upper body weight. The same vertebrae were µCT imaged in nonlo

Clinical observation of two bone cement distribution modes after percutaneous vertebroplasty for osteoporotic vertebral compression fractures.

BACKGROUND: Current findings suggest that percutaneous vertebroplasty(PVP) is a suitable therapeutic approach for osteoporotic vertebral com … cantly higher in the spongy group than in the block group. The change of local kyphosis and loss of vertebral body height were also less severe in the spongy group at the last follow-up. CONCLUSIONS: Compared with blocky group, spongy group can better maintain the height of the vertebral body, correct local kyphosis, reduce the risk of the vertebral body recomp …

[Three vertebral reduction and fixation for revision of lumbar spondylolisthesis].

OBJECTIVE: To analyze the surgical failure of lumbar spondylolisthesis and investigate the clinical effect of three vertebral reduction and … rew internal fixation and posterior decompression, reduction, and posterolateral bone graft between vertebral body. For the first time after surgery pedicle screw loosening or fracture of vertebral body, to switch thick or long pedicle screws implanted into again, or with bone cement perfusion and implanted with pedicle. The condition of intervertebral fusion an …

Morphological, stereological and radiological changes in pinealectomized chicken cervical vertebrae.

Considerable evidence supports the hypothesis that melatonin plays an important role in osteogenesis. We carried out an experiment to invest … profile of the density histogram in nonpinealectomized control group showed a spike profile for the vertebral body, indicating an increase in the amount of higher density tissues in this region, while a plateau-shaped profile was obtained for the vertebral body in pinealectomy group, indicating the presence of heterogenous bone tissue. Accordingly, the mean valu …

Parascapular mass revealing primary tuberculosis of the posterior arch.

We report the case of a parascapular abscess revealing primary tuberculosis of the posterior arch in a 31-year-old man. Sectional imaging is essential in order to detect the different lesions of this atypical spinal tuberculosis as osteolysis of the posterior arch extendible to vertebral body, osteocondensation, epidural extension which is common in this location, and high specificity of a zygapophysial, costo-vertebral or transverse arthritis.

Pulmonary Cement Embolism following Percutaneous Vertebroplasty.

Percutaneous vertebroplasty is a minimal invasive procedure that is applied for the treatment of osteoporotic vertebral fractures. During vertebroplasty, the leakage of bone cement outside the vertebral body leads to pulmonary cement embolism, which is a serious complication of this procedure. Here we report a 48-year-old man who was admitted to our hospital with dyspnea after percutaneous vertebroplasty and diagnosed as pulmonary cement embolism.

A vertebral hydatid cyst infection mimicking tuberculous spondylodiscitis.

Hydatid disease involving the vertebral body and paravertebral soft tissues is rare even in rural areas where echinococcosis is endemic. The case of a 34-year-old woman with vertebral hydatid disease mimicking tuberculous spondylodiscitis (Pott's disease) is presented in this report. Spinal hydatid disease should be considered in the differential diagnosis of spondylodiscitis in endemic countries, and tested for with imaging and serology.