Dynamic paraspinal muscle impingement causing acute hemiplegia after C1 posterior arch laminectomy: A case report.

Rationale: Acute neurological deficits following spinal surgery commonly result from epidural hematoma, surgical trauma, vascular compromise, and graft or hardware impingement, with the cause identified by magnetic resonance imaging (MRI). We present a rare case of dynamic paraspinal muscle impingement after C1 posterior arch laminectomy, which was diagnosed by myelography, with no significant findings on MRI.

Patient Concerns: An 81-year-old, severely obese male, was referred to our department for the treatment of vertebral disease of the lumbar spine.

Analysis of the Relationship between Ligamentum Flavum Thickening and Lumbar Segmental Instability, Disc Degeneration, and Facet Joint Osteoarthritis in Lumbar Spinal Stenosis.

Study Design: Cross-sectional study.

Purpose: To investigate the relationship between ligamentum flavum (LF) thickening and lumbar segmental instability and disc degeneration and facet joint osteoarthritis.

Overview Of Literature: Posterior spinal structures, including LF thickness, play a major role in lumbar spinal canal stenosis pathogenesis.

Analysis of the Relationship between Hypertrophy of the Ligamentum Flavum and Lumbar Segmental Motion with Aging Process.

Study Design: Retrospective cross-sectional study.

Purpose: To investigate the relationship between ligamentum flavum (LF) hypertrophy and lumbar segmental motion.

Overview Of Literature: The pathogenesis of LF thickening is unclear and whether the thickening results from tissue hypertrophy or buckling remains controversial.

Acute celiac artery compression syndrome after extensive correction of sagittal balance on an adult spinal deformity.

Purpose: To describe the first case of a patient who developed acute celiac artery compression syndrome (ACACS) after extensive correction of sagittal balance on an adult spinal deformity.

Methods: A 77-year-old woman presented with low back pain and spinal kyphosis deformity. We performed a two-stage correction with extreme lateral interbody fusion (XLIF), and her lumbar lordosis improved from -47° to 53°.

Tuberculous Spondylitis following Intravesical Bacillus Calmette-Guerin for Bladder Cancer.

We present a rare case of tuberculous spondylitis following intravesical Bacillus Calmette-Guerin (BCG) therapy for bladder cancer. An 82-year-old man presented with low back pain. Past medical history revealed bladder cancer diagnosed and treated 16 months previously by intravesical BCG.

Pyogenic vertebral osteomyelitis caused by Yersinia pseudotuberculosis.

Septic vertebral osteomyelitis caused by Yersinia pseudotuberculosis is extremely rare. We report the first case of pyogenic vertebral osteomyelitis due to Y. pseudotuberculosis.

Prevalence and distribution of thoracic and lumbar compressive lesions in cervical spondylotic myelopathy.

Study Design: Retrospective cross-sectional study.

Purpose: This study analyzed the prevalence and distribution of horacic and lumbar compressive lesions in cervical spondylotic myelopathy as well as their relationships with cervical developmental spinal canal stenosis (DCS) by using whole-spine postmyelographic computed tomography.

Overview Of Literature: There are few studies on missed compressive lesions of the spinal cord or cauda equina at the thoracolumbar level in cervical spondylotic myelopathy.

Enhancement of the effects of exfoliated carbon nanofibers by bone morphogenetic protein in a rat femoral fracture model.

Exfoliated carbon nanofibers (ExCNFs) are expected to serve as excellent scaffolds for promoting and guiding bone-tissue regeneration. We aimed to enhance the effects of ExCNFs with bone morphogenetic proteins (BMPs) and examine their feasibility and safety in clinical applications using a rat femoral fracture model. Group I (n = 16) animals were implanted with control MedGEL.

Predictable imaging signs of cauda equina entrapment in thoracolumbar and lumbar burst fractures with greenstick lamina fractures.

Study Design: A retrospective study.

Purpose: The aim of present study was to investigate imaging findings suggestive of cauda equina entrapment in thoracolumbar and lumbar burst fractures.

Overview Of Literature: Burst fractures with cauda equina entrapment can cause neurologic deterioration during surgery.

Analysis of the prevalence and distribution of cervical and thoracic compressive lesions of the spinal cord in lumbar degenerative disease.

Study Design: Retrospective study.

Purpose: The aim of the present study is to analyze the prevalence and distribution of cervical and thoracic compressive lesions of the spinal cord in lumbar degenerative disease, using whole-spine postmyelographic computed tomography.

Overview Of Literature: Of the various complications resulting from spinal surgery, unexpected neurological deterioration is the most undesired.

Symptomatic spinal cord kinking due to focal adhesive arachnoiditis, with ossification of the ligamentum flavum: a case report.

Study Design: A case report.

Objective: To describe a rare case of symptomatic spinal cord kinking due to focal adhesive arachnoiditis, with ossification of the ligamentum flavum (OLF).

Summary Of Background Data: Spinal cord kinking without spinal surgery is rare, and symptomatic spinal cord kinking due to focal adhesive arachnoiditis, with OLF is even rarer.

Manipulation of anabolic and catabolic responses with bone morphogenetic protein and zoledronic acid in a rat spinal fusion model.

Bone fusion involves a complex set of regulated signaling pathways that control the formation of new bone matrix and the resorption of damaged bone matrix at the surgical site. It has been reported that systemically administering a single dose of zoledronic acid (ZA) at the optimal time increases the strength of the bone morphogenetic protein (BMP)-mediated callus. In the present study, we aimed to investigate the effect of BMP-2 and ZA in a rat spinal model.

Clinical features of cervical pyogenic spondylitis and intraspinal abscess.

Study Design: Retrospective study.

Objectives: The purpose of the present study was to elucidate the clinical features of cervical pyogenic spondylitis and intraspinal abscess and to use this knowledge for early diagnosis and treatment.

Summary Of Background Data: Cervical pyogenic spondylitis and intraspinal abscess are relatively rare diseases in which accurate diagnosis is difficult at early stage.

Manipulation of the anabolic and catabolic responses with BMP-2 and zoledronic acid in a rat femoral fracture model.

Bone repair involves a complex set of regulated signaling pathways that control the formation of new bone matrix and the resorption of damaged bone matrix at the fracture site. It has been reported that the optimal time point for single-dose zoledronic acid (ZA) administration systemically increased the strength of bone morphogenetic protein (BMP)-7-mediated callus. However, its repair mechanism during bone fracture healing remains unknown.

Morphological analysis of the cervical pedicles, lateral masses, and laminae in developmental canal stenosis.

Study Design: Retrospective cross-sectional study.

Objective: This study aimed to elucidate the relationship between developmental spinal canal stenosis (DCS) and morphologic features in the cervical spine by comparing the features between DCS and nondevelopmental spinal canal stenosis (NDCS).

Summary Of Background Data: DCS is an important predisposing factor for cervical myelopathy.

Analysis of measured D-dimer levels for detection of deep venous thrombosis and pulmonary embolism after spinal surgery.

Study Design: A retrospective clinical study.

Objectives: To show the prevalence of deep venous thrombosis (DVT) and pulmonary embolism (PE) after spinal surgery using a D-dimer assay followed by screening with computed tomographic (CT) pulmonary angiography and CT venography.

Summary Of Background Data: A few studies on DVT development after spinal surgery have been reported.

Analysis of the relationship between facet joint angle orientation and lumbar spine canal diameter with respect to the kinematics of the lumbar spinal unit.

Study Design: Retrospective cross-sectional study.

Objective: This study aimed to elucidate the relationship among facet orientation, kinematics of a spinal unit, and change in lumbar spine canal diameter by using kinetic magnetic resonance imaging.

Summary Of Background Data: Some studies have suggested an association between increased sagittally oriented facet angles and degenerative lumbar spondylolisthesis.