Trends in cervical laminoplasty and 30-day postoperative complications: 10-year results from a retrospective, multi-institutional study of 1095 patients.

Purpose: This study aimed to investigate the recent 10-year trends in cervical laminoplasty and 30-day postoperative complications.

Methods: This retrospective multi-institutional cohort study enrolled patients who underwent laminoplasty for cervical spondylotic myelopathy (CSM) or ossification of the posterior longitudinal ligament. The primary outcome was the occurrence of all-cause 30-day complications.

Calcium sensing and signaling are impaired in the lumbar spine of a rat model of congenital kyphosis.

Purpose: Kyphosis involves spines curving excessively backward beyond their physiological curvature. Although the normal structure of the spinal vertebrae is extremely important for maintaining posture and the normal function of the thoracic and abdominal organs, our knowledge concerning the pathogenesis of the disease is insufficient. We herein report that the downregulation of the calcium signaling pathway is involved in the pathogenesis of congenital kyphosis.

A simple scoring of beam walking performance after spinal cord injury in mice.

Precise evaluation of motor functions using simple and reproducible tests for mouse models of spinal cord injury (SCI) are required. Overground walking of SCI mice has been tested by Basso Mouse Scale for locomotion (BMS). In contrast, only a few works quantify walking performances of SCI mice on narrow beams, a different task.

Spinal malformation - A biochemical analysis using congenital kyphosis rats.

Spinal kyphosis involves the vertebrae curving excessively backward, beyond their physiological curvature. Although the normal structure of the spinal vertebrae is extremely important for maintaining posture, the normal function of the thoracic and abdominal organs, and cosmetics, our knowledge concerning the pathogenesis of this disease is lacking. Furthermore, the responsible gene has not yet been identified.

Risk Factor for Poor Patient Satisfaction After Lumbar Spine Surgery in Elderly Patients Aged Over 80 years.

Study Design: Retrospective cohort study.

Objective: To clarify the poor patient satisfaction after lumbar spinal surgery in elderly patients.

Summary Of Background Data: As the global population continues to age, it is important to consider the surgical outcome and patient satisfaction in the elderly.

Upregulated miR-224-5p suppresses osteoblast differentiation by increasing the expression of Pai-1 in the lumbar spine of a rat model of congenital kyphoscoliosis.

Congenital scoliosis is defined by the presence of structural anatomical malformations that arise from failures of vertebral formation or segmentation before and after birth. The understanding of genetic background and key genes for congenital scoliosis is still poor. We herein report that the excess expression of plasminogen activator inhibitor-1 (Pai-1) induced by the upregulation of miR-224-5p is involved in the pathogenesis of congenital kyphoscoliosis through impaired osteoblast differentiation.

Spontaneous functional full recovery from motor and sensory deficits in adult mice after mild spinal cord injury.

The extent of spontaneous recovery in patients with a spinal cord injury (SCI) has not been thoroughly investigated. It is essentially not known whether SCI animals exhibit full recovery from both motor and sensory deficits as well. Here, we developed an appropriate condition to produce a mild SCI in mice.

The retinol-retinoic acid metabolic pathway is impaired in the lumbar spine of a rat model of congenital kyphoscoliosis.

Although congenital scoliosis is defined as a genetic disease characterized by a congenital and abnormal curvature of the spinal vertebrae, our knowledge of the genetic underpinnings of the disease is insufficient. We herein show that the downregulation of the retinol-retinoic acid metabolism pathway is involved in the pathogenesis of congenital scoliosis. By analyzing DNA microarray data, we found that the expression levels of genes associated with the retinol metabolism pathway were decreased in the lumbar spine of Ishibashi rats (IS), a rat model of congenital kyphoscoliosis.

Unusual Painful Muscle Spasm in a Dialysis-Dependent Patient with Progressive Cervical Kyphosis.

We herein report a case of cervical myelopathy due to destructive spondyloarthropathy (DSA) with an unusual painful muscle spasm. A 51-year-old man presented to our hospital due to numbness in the hands and progressive gait disturbance. The patient underwent laminoplasty for cervical myelopathy.

Risk Factors for Rapidly Progressive Neurological Deterioration in Cervical Spondylotic Myelopathy.

Study Design: A retrospective single-center study.

Objective: This study sought to clarify the risk factors and to evaluate the surgical outcome in patients with rapidly progressive cervical spondylotic myelopathy (rp-CSM).

Summary Of Background Data: CSM is a degenerative spine disease presenting a slow development of myelopathy.

Successful hemostatic management of major surgery for cervical spondylotic myelopathy in a patient with severe factor XI deficiency.

Factor XI deficiency (FXID) is a rare bleeding disorder caused by mutations in the F11 gene. Spontaneous bleeding in patients with factor XI deficiency is rare, but major bleeding may occur after surgery or trauma. The basic method for hemostatic treatment is replacement of the missing factor using FXI concentrate or fresh frozen plasma (FFP).

Toe Gap Force is Related to Ultrasonic Parameter of Calcaneus Bone Status in General Population.

Background: Elucidating the relation between bone health condition and muscle strength can provide useful knowledge for Japan's super-aged society. This study ascertained the Speed Of Sound (SOS) of the calcaneus and upper and lower limb muscle strength in a general population.

Methods: Medical examinations were conducted of 277 adult residents (100 men, 177 women; average age 67.

Prevalence of Chronic Nonspecific Low Back Pain and Its Associated Factors among Middle-Aged and Elderly People: An Analysis Based on Data from a Musculoskeletal Examination in Japan.

Study Design: A cross-sectional study.

Purpose: To clarify the prevalence of chronic nonspecific low back pain (CNSLBP) and its associated factors among middle-aged and elderly Japanese individuals using data from a musculoskeletal examination conducted in general Japanese populations.

Overview Of Literature: Most studies evaluating low back pain-associated factors have been conducted in Western countries, but they have not always evaluated CNSLBP.

Assessment of the Relationship between Pelvic Tilt and the Sacro-Femoral-Pubic Angle in Middle-Aged and Elderly Asian Individuals.

Study Design: Cross-sectional study.

Purpose: The purpose of this study was to evaluate the correlation between pelvic tilt (PT) and the sacro-femoral-pubic (SFP) angle, which is easier to identify than PT, in middle-aged and elderly Asian subjects from the general population.

Overview Of Literature: Measuring PT is important in the diagnosis and treatment of adult spinal deformity.

The relationship between the degree of displacement of the atlas to axis and the clinical data in atlanto-axial subluxation due to rheumatoid arthritis.

Introduction: The most common type of anatomical cervical spine involvement is atlanto-axial subluxation (AAS) in rheumatoid arthritis (RA). The purpose of this study was to clarify the relationship between the displacement of the atlas to axis and the clinical data obtained in patients with AAS due to RA.

Methods: Fifty patients with AAS due to RA that were treated by surgery are herein reviewed.

Risk factors of cervical surgery related complications in patients older than 80 years.

Introduction: With an aging population, the proportion of patients aged ≥80 years requiring cervical surgery is increasing. Surgeons are concerned with the high incidence of complications in this population, because "age" itself has been reported as a strong risk factor for complications. However, it is still unknown which factors represent higher risk among these elderly patients.

Osteopenia and the physical function in Japanese patients with schizophrenia.

Unlabelled: We evaluated the state of osteopenia and the physical function in 121 schizophrenic patients. These factors were worse in the inpatient group than in the outpatient group. The age, sex, body mass index (BMI), and physical function were correlated to the state of osteopenia.

Complications Associated With Spine Surgery in Patients Aged 80 Years or Older: Japan Association of Spine Surgeons with Ambition (JASA) Multicenter Study.

Study Design: Retrospective study of registry data.

Objectives: Aging of society and recent advances in surgical techniques and general anesthesia have increased the demand for spinal surgery in elderly patients. Many complications have been described in elderly patients, but a multicenter study of perioperative complications in spinal surgery in patients aged 80 years or older has not been reported.

Risk Factors for Delirium After Spine Surgery in Extremely Elderly Patients Aged 80 Years or Older and Review of the Literature: Japan Association of Spine Surgeons with Ambition Multicenter Study.

Study Design: Retrospective database analysis.

Objective: Spine surgeries in elderly patients have increased in recent years due to aging of society and recent advances in surgical techniques, and postoperative complications have become more of a concern. Postoperative delirium is a common complication in elderly patients that impairs recovery and increases morbidity and mortality.

A Retrospective Analysis of Subaxial Subluxation After Atlanto-axial Arthrodesis in Patients With Rheumatoid Arthritis Based on Annual Radiographs Obtained for 5 Years.

Study Design: Retrospective study.

Objective: The purpose of this study was to investigate the incidence of subaxial subluxation (SAS) after atlanto-axial arthrodesis in rheumatoid arthritis (RA) patients using annual radiographs obtained for 5 years and clarify the characteristics of SAS after surgery.

Summary Of Background Data: Rheumatoid SAS has been reported to occur after atlanto-axial arthrodesis.

Multiple intradural-extramedullary spinal ependymomas including tumors with different histological features.

Introduction: We report a rare case with multiple intradural-extramedullary spinal ependymomas with different histological features.

Case Report: A 26-year-old female presented to our hospital because of difficulty in walking due to progressive paresis. Magnetic resonance imaging of the thoracic spinal cord showed multiple spinal cord tumors.

The clinical outcomes of atlanto-axial arthrodesis in patients with rheumatoid arthritis - Assessment according to the Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ).

Purpose: The purpose of this study was to evaluate the clinical outcomes of atlanto-axial arthrodesis in rheumatoid arthritis (RA) patients with cervical myelopathy using the Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ).

Methods: Twenty patients who underwent surgery to treat atlanto-axial subluxation (AAS) were reviewed.

Results: The rates of success rates for each domain were as follows: cervical spine function, 11 of 18 patients (61.

Predictors of Bone Status by Quantitative Ultrasound Measurements in a Mountain Village in Japan.

Background: It seems to be important to recognize predictors of bone health condition in Japanese super-aged society. The purpose of this study was to investigate predictors of the speed of sound (SOS) of calcaneus by quantitative ultrasound measurements of mountain village residents.

Materials And Methods: Medical examinations were conducted on 214 participants (69 men, 145 women; average age of 63.

Association between dysfunction of upper extremity and locomotive syndrome in general population.

Objective: This study investigated the relation between self-assessment of upper extremity function and locomotive syndrome in a general population.

Methods: Using the 25-question Geriatric Locomotive Function (GLFS-25) test, 320 Japanese people (115 men, 205 women, mean age 67.6 years, 40-92 years) were evaluated for locomotive dysfunction.