Risk Factors for Residual Back Pain After Balloon Kyphoplasty for Osteoporotic Vertebral Fracture.

Background: Balloon kyphoplasty (BKP) is a method for the management of osteoporotic vertebral body fracture (OVF). However, improvement in back pain (BP) is poor in some patients, also previous reports have not elucidated the exact incidence and risk factors for residual BP after BKP. We clarified the characteristics of residual BP after BKP in patients with OVF.

Association between Opioid Requirement and Overall Survival in Patients with Spinal Metastases.

Introduction: Clinical evidence shows that opioid administration in cancer patients is associated with shorter survival. This study explored the impact of opioid requirement on overall survival of patients with spinal metastases. We also evaluated the association between opioid requirement and tumor-related spinal instability.

Association between Age and Trunk Muscle Area and Density in Patients with Spinal Metastases.

Study Design: A retrospective study.

Purpose: This study aimed to evaluate the relationship between age and trunk muscle composition and between trunk muscle composition and overall survival in patients with spinal metastasis.

Overview Of Literature: A low skeletal muscle mass is associated with a poor overall survival in patients with cancer.

Decreased muscle mass and strength affected spinal sagittal malalignment.

Purpose: Correction surgeries for spinal malalignment showed good clinical outcomes; however, there were concerns including increased invasiveness, complications, and impact on medico-economics. Ideally, an early intervention is needed. To better understand the patho-mechanism and natural course of spinal alignment, the effect of factors such as muscle mass and strength on spinal sagittal imbalance were determined in a multicenter cross-sectional study.

Prognostic value of psoas major muscle density in patients with breast cancer metastases to bone: a retrospective single-center cohort study.

Objective: Although sarcopenia is associated with poor prognosis for cancer patients, the relationship between muscle quantity and quality, and prognosis of breast cancer patients with bone metastases is unclear. This study aims to evaluate the association of muscle parameters, muscle area and density, and overall survival (OS) from the diagnosis of bone metastases in breast cancer patients with bone metastases.

Methods: This study retrospectively investigated the prognostic value of muscle area and density in 90 women who were diagnosed with breast cancer with bone metastases between September 2005 and June 2018.

Gender-specific analysis for the association between trunk muscle mass and spinal pathologies.

We investigated the relationship between trunk muscle mass and spinal pathologies by gender. This multicenter cross-sectional study included patients aged ≥ 30 years who visited a spinal outpatient clinic. Trunk and appendicular muscle mass were measured using bioelectrical impedance analysis.

Presence of sarcopenia does not affect the clinical results of balloon kyphoplasty for acute osteoporotic vertebral fracture.

Sarcopenia has been associated with poor clinical outcomes in several diseases. Herein, the clinical results of balloon kyphoplasty (BKP) for acute osteoporotic vertebral fracture (OVF) treatment were assessed and compared between sarcopenia and non-sarcopenia patients. Sixty patients who underwent BKP for treatment of acute OVF with poor prognostic factors between April 2016 and September 2017 and were assessed for sarcopenia were enrolled.

Bow hunter's syndrome after cervical laminoplasty in a patient with rheumatoid arthritis with bony ankylosis in the cervical spine: a case report.

Bow hunter's syndrome, or rotational vertebral artery (VA) occlusion, refers to vertebrobasilar insufficiency due to mechanical occlusion of the VA. We present a case of surgical treatment for bow hunter's syndrome that occurred after cervical laminoplasty in a patient with rheumatoid arthritis with bony ankylosis of the facet joints. A 59-year-old female with rheumatoid arthritis experienced sudden incomplete left hemiplegia.

Characteristic radiological findings for revision surgery after balloon kyphoplasty.

Balloon kyphoplasty (BKP) sometimes fails to improve patients' outcomes, with revision surgery, using anterior or posterior reconstruction, being required. The purpose of this study was to investigate the radiological risk factors of failure after BKP in the treatment of osteoporotic vertebral fractures (OVFs). This case-control study included 105 patients treated with single BKP and 14 patients  who required revision BKP.

Prognostic value of low psoas muscle mass in patients with cervical spine metastasis.

Morphometric analyses have shown that the psoas muscle mass is associated with mortality in cancer patients. Because of the low incidence of cervical spine metastasis, few studies have been reported in this population. The present study aimed to identify the prognostic value of a psoas muscle mass in predicting overall survival.

Low paravertebral muscle mass in patients with bone metastases from lung cancer is associated with poor prognosis.

Purpose: Low skeletal muscle mass has been associated with poor prognosis in patients with advanced lung cancer. However, little is known about the relationship between skeletal muscle mass and overall survival in patients with bone metastases from lung cancer. The objective of the present study was to evaluate the prognostic value of low trunk muscle mass in predicting overall survival in these patients.

Development of a scoring system for predicting adjacent vertebral fracture after balloon kyphoplasty.

Background Context: The incidence of adjacent vertebral fracture (AVFs) is reported to be 10%-38% after balloon kyphoplasty. However, no reports have established a system for prediction of AVF occurrence.

Purpose: To establish a scoring system for predicting AVF occurrence after balloon kyphoplasty for osteoporotic vertebral fractures (OVFs).

ISSLS PRIZE IN CLINICAL SCIENCE 2019: clinical importance of trunk muscle mass for low back pain, spinal balance, and quality of life-a multicenter cross-sectional study.

Study Design: A multicenter cross-sectional study.

Objectives: To clarify the relationship of trunk muscle mass with low back pain, spinal sagittal balance, and quality of life. Few reports have investigated the relationship of trunk muscle mass with lumbar spine function and spinal balance, and the clinical significance of trunk muscle mass remains unclear.

Prognostic value of paravertebral muscle density in patients with spinal metastases from gastrointestinal cancer.

Purpose: Morphometric analyses have shown that trunk muscle mass and density are associated with mortality in cancer patients. Because of the low incidence of spinal metastasis from gastrointestinal cancer and the limited life expectancy of these patients, few studies have been reported in this population. We evaluated the prognostic value of trunk muscle area and density in predicting overall survival.

Cost-effectiveness of Balloon Kyphoplasty for Patients With Acute/Subacute Osteoporotic Vertebral Fractures in the Super-Aging Japanese Society.

Study Design: A propensity score matching study.

Objective: The aim of this study was to assess the cost-effectiveness of balloon kyphoplasty (BKP) in Japan.

Summary Of Background Data: Osteoporotic vertebral fracture (OVF) is a common disease in elderly people.

Spinopelvic Sagittal Alignment after Microendoscopic Laminotomy in Patients with Lumbar Degenerative Spondylolisthesis.

Background And Study Aims:  Spinopelvic sagittal balance is important in managing lumbar diseases. We evaluated the change in spinal sagittal alignment after microendoscopic laminotomy in patients with low-grade degenerative spondylolisthesis (DS).

Material And Methods:  We retrospectively reviewed the records of 87 patients who underwent microendoscopic laminotomy.

Balloon Kyphoplasty Versus Conservative Treatment for Acute Osteoporotic Vertebral Fractures With Poor Prognostic Factors: Propensity Score Matched Analysis Using Data From Two Prospective Multicenter Studies.

Study Design: A multicenter, prospective, single-arm, intervention study.

Objective: The aim of this study was to investigate efficacy of balloon kyphoplasty (BKP) for acute osteoporotic vertebral fractures (OVFs) in patients with poor prognostic factors.

Summary Of Background Data: The indications for BKP remain unclear.

Differences in short-term clinical and radiological outcomes depending on timing of balloon kyphoplasty for painful osteoporotic vertebral fracture.

Background: Balloon kyphoplasty or vertebroplasty is widely performed as a surgical intervention for osteoporotic vertebral fracture (OVF) and the effects have been investigated in many previous studies. However, the influence of the timing of the procedure on patient outcomes has not been studied formally. The purpose of this study was to investigate differences in the surgical outcomes of OVFs according to the timing of balloon kyphoplasty.

Restrictions of cervical flexion after laminoplasty increase in the mechanical stress at the occipitocervical junction in non-rheumatoid arthritis patients.

Increased range of motion (ROM) at O-C2 after cervical laminoplasty is thought to be a compensatory change due to loss of cervical ROM after surgery. Retro-odontoid pseudotumor in non-RA patients is also caused by loss of ROM at C2-C7 causing mechanical stress on upper cervical spine. The aim of this study was to measure the occipitocervical alignment before and after cervical laminoplasty, and examine the factors associated with postoperative retro-odontoid soft tissue (ROST) enlargement.

Clinical and Radiological Outcomes after Microscopic Bilateral Decompression via a Unilateral Approach for Degenerative Lumbar Disease: Minimum 5-Year Follow-Up.

Study Design: A retrospective study.

Purpose: To assess postoperative bone regrowth at surgical sites after lumbar decompression with >5 years of follow-up. Postoperative preservation of facet joints and segmental spinal instability following surgery were also evaluated.

Overall survival and prognostic factors in patients with spinal metastases from lung cancer treated with and without epidermal growth factor receptor tyrosine kinase inhibitors.

Background: Evaluation of the prognosis in patients with spinal metastases is important in decision making regarding surgical treatment. The purpose of this study was to investigate overall survival in patients with spinal metastases from lung cancer by histological subtype, and to investigate prognostic factors in patients treated with and without epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs).

Methods: The data from 135 patients diagnosed with spinal metastases from lung cancer were retrospectively evaluated.

Prevalence of Diffuse Idiopathic Skeletal Hyperostosis in Patients with Spinal Disorders.

Study Design: Retrospective cohort study.

Purpose: The purpose of this study was to evaluate the prevalence of diffuse idiopathic skeletal hyperostosis (DISH) in patients with spinal diseases determined by roentgen images of the whole spine.

Overview Of Literature: Although several studies have investigated the prevalence of DISH in healthy subjects, no detailed data have been reported on the prevalence of DISH in patients with degenerative spinal disorders.

Factors associated with retro-odontoid soft-tissue thickness in rheumatoid arthritis.

OBJECTIVE Increasing soft-tissue mass posterior to the odontoid process causes spinal cord compression. Retro-odontoid pseudotumors are considered to be associated with atlantoaxial instability in patients with rheumatoid arthritis (RA), but the exact mechanism by which these lesions develop has not been elucidated. The purpose of this study was to identify the relationships between retro-odontoid soft-tissue (ROST) thickness and radiological findings or clinical data in patients with RA.

Utility of Discography as a Preoperative Diagnostic Tool for Intradural Lumbar Disc Herniation.

Preoperative definitive diagnosis of intradural lumbar disc herniation (ILDH) is difficult despite the availability of various neuroradiological investigative tools. We present a case of ILDH diagnosed preoperatively by discography and computed tomography-discography (disco-CT).The patient was a 63-year-old man with acute excruciating right leg pain.