Anatomical Parameters of Percutaneous, Minimally Invasive, Direct Intralaminar Pars Screw Fixation of Spondylolysis.

Objective: To investigate the anatomical parameters of the ideal screw trajectory for percutaneous intralaminar screw fixation of a pars defect in lumbar spondylolysis using computed tomography scans.

Methods: Using advanced radiological software, the ideal intralaminar screw trajectory was determined. The anatomical parameters of this trajectory were analyzed using a total of 80 single-level lumbar tomography scans in patients with spondylolysis at the lumbar 4 vertebrae and lumbar 5 vertebrae levels.

Radiological and Clinical Follow-up of Alpha-D Cervical Disk Prosthesis.

Background: Fusion surgery is applied to prevent segmental instability after surgery for cervical disk herniation. Motion-sparing surgeries have been developed to prevent adjacent segment disease after fusion surgery. Total disk replacement, one of these methods, has been applied in the cervical region for more than 20 years.

Foraminoplasty with Partial Pediculectomy in Degenerative Spondylolisthesis Cases with Nerve Compression.

Background: Degenerative spondylolisthesis refers to a forward displacement of a vertebra relative to the underlying vertebra. Patients with radicular pain and/or neurogenic claudication are considered suitable candidates for surgical intervention. The aim of this study was to present clinical results of dynamic stabilization applied after pediculectomy and neural foramen enlargement in patients with degenerative spondylolisthesis and normal spinal sagittal balance.

Preoperative Magnetic Resonance Imaging Abnormalities Predictive of Lumbar Herniation Recurrence After Surgical Repair.

Objective: There are currently no standard criteria for evaluating the risk of recurrent disk herniation after surgical repair. This study investigated the predictive values of 5 presurgical imaging parameters: paraspinal muscle quality, annular tear size, Modic changes, modified Phirrmann disk degeneration grade, and presence of sacralization or fusion.

Methods: Between 2015 and 2018, 188 patients (89 female, 99 male, median age 50) receiving first corrective surgery for lumbar disk herniation were enrolled.

Lumbar Dynamic Stabilization With 2-Stage Surgery: Early Results.

Background: Screw loosening, which is a major problem in dynamic systems, can be easily overcome with 2-stage surgery. In this article, the clinical and radiological results of patients undergoing dynamic stabilization with a Dynesys device in 2 stages are discussed.

Methods: A total of 10 male and 13 female adult patients were included in this single-center retrospective study conducted between 2018 and 2021.

Lumbar Foraminal Stenosis Classification That Guides Surgical Treatment.

Background: There are numerous radiological and anatomical studies on lumbar foramina in the literature, but there are no distinctive studies about the relationship between treatment and the type of foraminal stenosis. This study was conducted to better evaluate foraminal stenosis and to plan treatment accordingly.

Methods: Foraminal stenosis was divided into 2 groups: stable and unstable stenosis.

Clinical Results of Restoration of Pars Interarticularis Defect in Adults with Percutaneous Intralaminar Screw Fixation.

Objective: This study aims to report the clinical outcomes associated with the percutaneous intralaminar screw repair performed for pars defects in adults.

Methods: Adult patients who got their lumbar L5 spondylolysis repaired via modified Buck's procedure between 2017 and 2020 were retrospectively evaluated. The preoperative and postoperative clinical outcomes at 1, 3, 6, and 12 months were evaluated for patients with and without fusion using the visual analog scale, Oswestry Disability Index, and the Short-Form Health Survey 36 (SF-36).

Adjacent Segment Disease (ASD) in Incidental Segmental Fused Vertebra and Comparison With the Effect of Stabilization Systems on ASD.

Objective Adjacent segment disease is a controversial process after spine stabilization. The two important factors discussed are natural aging and hypermobility in incidental segmental fusion anomalies; patients have two or more fused vertebrae from birth, which are the results of spinal movement restriction due to the fusion of some spinal units. This article's main purpose is to determine the degree of relationship of hypermobility and the aging process in the deterioration of the disks adjacent to fusion.

Kyphoplasty with Posterior Dynamic Stabilization in the Surgical Treatment of Unstable Thoracolumbar Osteoporotic Vertebral Compression Fractures.

Aim: To evaluate the role of posterior dynamic stabilization (PDS) with kyphoplasty (KP) in the surgical treatment of unstable osteoporotic compression fractures, which are common in the elderly population.

Material And Methods: This study included 25 patients with osteoporotic compression fractures. KP with PDS was performed on all patients.

Changes in cervical sagittal alignment and the effects on cervical parameters in patients with cervical spondylotic myelopathy after laminoplasty.

Objective: To monitor changes in cervical parameters before and after laminoplasty surgery. Cervical parameters and health-related quality-of-life (HRQOL) values that may be affected after laminoplasty were examined before and after surgery. The clinical and radiological course of these values was monitored, and their interaction with all spinal radiological parameters was revealed.

Should Iliac Wing Screws Be Included in Long Segment Dynamic Stabilization?

Background In this article, clinical satisfaction and radiological results are discussed in a series of patients where the iliac wings participate in dynamic stabilization. Dynamic stabilization is an effective alternative surgical treatment method, especially in clinical pictures that go with pain due to minor instabilities. Practically the unique surgical instrument used in multilevel instabilities is the Dynesys system.

Comparison of Two Minimally Invasive Techniques with Endoscopy and Microscopy for Extraforaminal Disc Herniations.

Objective: Extraforaminal disc herniations are extraordinary herniations because they are located outside the foraminal bony borders and compress the root exiting at the corresponding level, whereas in median or paramedian herniations, the root 1 level below is compressed. Percutaneous endoscopic discectomy (PED) and microscopic extraforaminal discectomy (MEFD) are 2 popular contemporary techniques that have been performed extensively for these herniations since the 1970s.

Methods: In this study, we retrospectively analyzed 118 patients who underwent either PED (66 patients) or MEFD (52 patients).

A new concept of motion preservation surgery of the cervical spine: PEEK rods for the posterior cervical region.

Background: Laminectomy may cause kyphotic postoperative deformity in the cervical region leading to segmental instability over time. Laminoplasty may be an alternative procedure to laminectomy, as it protects the spine against post-laminectomy kyphosis; however, similar to laminectomy, laminoplasty may cause sagittal plane deformities by destructing or weakening the dorsal tension band.

Objective: Using finite element analysis (FE), we attempted to determine whether a posterior motion preservation system (PEEK posterior rod system concept) could overcome the postoperative complications of laminectomy and laminoplasty and eliminate the side effects of rigid posterior stabilization in the cervical region.

Solitary Extramedullary Plasmacytoma Mimicking Acute Subdural Hematoma.

Background: Solitary extramedullary plasmacytoma (SEP) is a plasma cell neoplasm located outside the bone. It is rarely observed in the intracranial area. It is very difficult to diagnose this condition radiologically before surgery.

High Infection Rates in Patients with Long-Segment Dynesys System.

Background: Infection follow-up in patients stabilized with the Dynesys system. Infection rates were determined in patients who had ≥5 segments stabilized with the Dynesys system.

Methods: Eighty-three patients with various etiologies were stabilized with the Dynesys system.

Effect of a hypercholesterolemia as a starting factor on spinal degeneration in rabbits and role of Vitamin E (α-tocopherol).

Background: To identify the role of the hypercholesterolemia as a starting factor in discovertebral degeneration that ultimately causes lower back pain, and investigate the role of Vitamin E in this process.

Methods: The rabbits (n = 32) were divided into two broad experimental groups: A control group, and a hypercholesterolemia group, namely cholesterol, and cholesterol plus Vitamin E groups and they were fed sequentially for 4 or 8 weeks. Serum cholesterol and Vitamin E (α-tocopherol) levels were determined; vascular tissue was prepared for histopathological analyses and vertebra was decalcified for the study.

Unusual pain due to unilateral facet degeneration at the C1-2 level.

Aim: Neck pain is a common problem that may result from abnormalities in the soft tissues, bones and joints of the spine. However, upper neck and occipital pain syndrome due to unilateral idiopathic arthrosis of a C1-2 lateral articulation is a very rare condition.

Material And Methods: We describe two patients with unilateral arthrosis of a C1-2 lateral articulation who were successfully treated with C1-2 fusion.

A case of chordoma invading multiple neuroaxial bones: report of ten years follow up.

Aim: Chordoma is a rare, slow-growing primary malignant tumor of the axial skeleton, arising from the embryonic cells of primitive notochord. Chordomas may arise at different sites of the vertebral column simultaneously or more probably they may metastasise along the neural axis insidiously. Recurrence despite radical surgery and following adjuvant therapy is possible.

LUNG CANCER METASTASIS TO THE SPINE.

Background: In patients affected by malignant tumors, spinal column metastases are frequent. Incidence varies between 30% -70%. Lung cancer is the second most frequent cancer invading spine in women, following breast cancer.

Dynamic stabilisation in the treatment of degenerative disc disease with modic changes.

Objective. Posterior dynamic stabilization is an effective alternative to fusion in the treatment of chronic instability and degenerative disc disease (DDD) of the lumbar spine. This study was undertaken to investigate the efficacy of dynamic stabilization in chronic degenerative disc disease with Modic types 1 and 2.

Posterior dynamic stabilization for the treatment of patients with lumbar degenerative disc disease: long-term clinical and radiological results.

Aim: Comparison of long-term preoperative and postoperative clinical and radiological results for patients diagnosed with degenerative disc disease that underwent posterior dynamic stabilization. Lumbar disc degeneration is caused by a variety of factors. Disruptions in the vertebral endplate result in defects in disc nutrition and, thus, disc degeneration.

Unilateral dynamic stabilization for unilateral lumbar spinal pathologies; a new surgical concept.

Aim: Minimally invasive surgical techniques for spine surgery have gained popularity over the last decade. In this study, the authors describe a unilateral dynamic stabilization for unilateral spinal pathologies.

Material And Methods: A total of 7 patients with an average age of 46.

Skipping posterior dynamic transpedicular stabilization for distant segment degenerative disease.

Objective. To date, there is still no consensus on the treatment of spinal degenerative disease. Current surgical techniques to manage painful spinal disorders are imperfect.

Comparison of posterior dynamic and posterior rigid transpedicular stabilization with fusion to treat degenerative spondylolisthesis.

This article describes the clinical and radiological outcomes of a comparison of posterior dynamic transpedicular stabilization and posterior rigid transpedicular stabilization with fusion after decompression in the treatment of degenerative spondylolisthesis. This prospective clinical and radiologic study was conducted between 2004 and 2007 and included 46 patients, of whom 33 were women (71.7%) and 13 were men (28.

Minimum two-year follow-up of cases with recurrent disc herniation treated with microdiscectomy and posterior dynamic transpedicular stabilisation.

The objective of this article is to evaluate two-year clinical and radiological follow-up results for patients who were treated with microdiscectomy and posterior dynamic transpedicular stabilisation (PDTS) due to recurrent disc herniation. This article is a prospective clinical study. We conducted microdiscectomy and PDTS (using a cosmic dynamic screw-rod system) in 40 cases (23 males, 17 females) with a diagnosis of recurrent disc herniation.