Osteoarticular infections at a pediatric emergency core hospital in Japan.

Objectives: Osteomyelitis (OM) and septic arthritis (SA) in childhood might cause complications, sequelae, or even death if diagnosis and treatment are delayed. Here, we examined the outcomes of OM/SA at a pediatric emergency core hospital in Japan.

Methods: This was a single-center, retrospective, observational cohort study at a pediatric emergency core hospital in Japan.

An anterolateral dislocated monteggia lesion with plastic lateral bowing of the ulna associated with ipsilateral epiphyseal fracture of the distal radius: a case report with 4 years of follow-up.

We encountered a rare presentation of anterolateral dislocation of the radial head with plastic lateral bowing of the ulna associated with ipsilateral epiphyseal fracture of the distal radius in a child. The patient was treated surgically and reached skeletal maturity 4 years later with no functional or growth deficiency.

Open pelvic fracture with bilateral common iliac arteriovenous injury successfully treated with hemicorporectomy following damage control interventional radiology in a hybrid emergency room.

Background: In severe pelvic fracture, keys of successful treatment are early hemostasis and timely definitive care. We present a case in which the patient was treated by fast and reliable hemostasis and subsequent comprehensive hemicorporectomy.

Case Presentation: We describe the case of a 47-year-old man with severe pelvic trauma.

Gustilo Type III Open and Comminuted Tibial Fractures Managed by Simultaneous Combination of a Free Latissimus Dorsi Muscle Flap and Ilizarov External Fixation: A Case Report.

Case: A 70-year-old woman who sustained Gustilo type III open and comminuted tibial fractures presented with extensive soft-tissue defect. Definitive surgery was performed using a free latissimus dorsi muscle flap for the extensive soft-tissue defect and Ilizarov external fixation (IEF) to stabilize the fractures and arthrodese the ankle. Ankle arthrodesis was accomplished by the wires penetrating the implanted muscle flap.

Vertebral Lateral Notch as Optimal Entry Point for Lateral Mass Screwing Using Modified Roy-Camille Technique.

Study Design: Retrospective study of 37 consecutive female patients with cervical spondylotic myelopathy who underwent reconstructed computed tomography (CT) scanning of the cervical spine.

Purpose: The purpose of this study was to investigate whether the vertebral lateral notch of the cervical spine is an effective landmark to determine the entry point for lateral mass screwing. A modified Roy-Camille technique was used to determine the entry point associated with the lateral notch of the cervical spine.

Proteomic Analysis of Human Tendon and Ligament: Solubilization and Analysis of Insoluble Extracellular Matrix in Connective Tissues.

Connective tissues such as tendon, ligament and cartilage are mostly composed of extracellular matrix (ECM). These tissues are insoluble, mainly due to the highly cross-linked ECM proteins such as collagens. Difficulties obtaining suitable samples for mass spectrometric analysis render the application of modern proteomic technologies difficult.

Assessment of maximal insertional torque of cervical and thoracic screws during posterior spinal surgery.

Study Design: Multicenter intraoperative biomechanical analysis.

Purpose: This study aimed to assess the maximal insertional torque (MIT) of lateral mass screw (LMS) and pedicle screw (PS) in the cervical or thoracic vertebrae during surgery.

Methods: During posterior spinal fusion, cervical or thoracic multi-axial screws were placed at different cervical or thoracic levels and the MIT was recorded for each screw revolution using an analogue torque wrench.

Hybrid technique of cortical bone trajectory and pedicle screwing for minimally invasive spine reconstruction surgery: a technical note.

The pedicle screw (PS) system is widely used for spinal reconstruction. Recently, screw insertion using the cortical bone trajectory (CBT) technique has been reported to provide increased holding strength of the vertebra, even in an osteoporotic spine. CBT is also beneficial due to its low invasiveness.

Long-term outcomes of lumbar posterior apophyseal end-plate lesions in children and adolescents.

Background: A lesion of the lumbar posterior apophyseal end plate in children and adolescents causes symptoms similar to those associated with a herniated disc. However, the end-plate lesion and the herniated disc differ in terms of pathology. The purpose of this study was to clarify the long-term clinical and radiographic outcomes in children and adolescents who were treated either surgically or conservatively for a lumbar posterior apophyseal end-plate lesion.

Hemorrhagic facet cyst in the lumbar spine causing contralateral leg symptoms: a case report.

Here we present a case of hemorrhagic lumbar facet cyst presenting with progressive radiculopathy only on the contralateral side. If a patient has previous back pain or neuropathy for several months and then suddenly deteriorates, hemorrhagic facet cyst of the lumbar spine should be part of the differential diagnosis. However, as in the present case, we should be aware that there is a possibility of a contralateral lesion.

Osseous erosion by herniated nucleus pulposus mimicking intraspinal tumor: a case report.

Erosion of spinal osseous structure, so-called scalloping, has been rarely reported associated with herniated nucleus pulposus (HNP). We report a rare case of HNP causing erosion of the spinal osseous structure (including lamina). The patient was an 81-year-old woman with 3-year history of low-back pain and left leg radiating pain.

Adolescents with symptomatic laminolysis: report of two cases.

Retroisthmic cleft refers to a cleft in the lamina and is rarely reported. It was first described by Brocher, and later Wick et al. proposed the term "laminolysis" to describe the retroisthmic cleft by analogy with the nomenclature of the applied stress fracture of the pars interarticularis (spondylolysis) and the pedicle (pediculolysis).

Incidence and etiology of lumbar spondylolysis: review of the literature.

Background: Lumbar spondylolysis is a defect of the pars interarticularis known to occur as a stress fracture. Its incidence varies considerably depending on ethnicity, sex, and sports activity. However, there are few literature reviews describing its incidence in different ethnic groups or in people who engage in different sports.

Diffuse arachnoid ossification and multiple arachnoid cysts presenting with progressive thoracic myelopathy.

An ossified arachnoid membrane combined with cystic formation is rarely reported as a cause of spinal cord compression. We report the case of a 60-year-old man who presented with diffuse ossification of the arachnoid membrane (arachnoid ossification) and multiple cystic changes (arachnoid cyst) at the thoracic and lumbar spine. The lesions were surgically removed and progressive deterioration was prevented, although no marked improvement of neurological symptoms was attained.

Vertebral rounding deformity in pediatric spondylolisthesis occurs due to deficient of endochondral ossification of the growth plate: radiological, histological and immunohistochemical analysis of a rat spondylolisthesis model.

Study Design: A study using rat spondylolisthesis models.

Objective: To clarify pathomechanism of vertebral rounding deformity in pediatric spondylolisthesis.

Summary Of Background Data: For high-grade slippage, rounding of sacrum surface associated with L5 spondylolisthesis is reported to be the most responsible risk factor.

Pathomechanism of loss of elasticity and hypertrophy of lumbar ligamentum flavum in elderly patients with lumbar spinal canal stenosis.

Study Design: A histologic, biologic, and immunohistochemical assessment using human samples of lumbar ligamentum flavum.

Objective: To clarify the pathomechanism of loss of elasticity and hypertrophy of the lumbar ligamentum flavum (LF) in the elderly population.

Summary Of Background Data: The most common spinal disorder in elderly patients is lumbar spinal canal stenosis, causing low back and leg pain, and paresis.

Treatment of dysplastic osteoarthritis with labral tear by Chiari pelvic osteotomy: outcomes after more than 10 years follow-up.

Introduction: The presence of a damaged labrum is one of many factors influencing the outcomes of Chiari pelvic osteotomy. However, there are few previous papers describing the long-term outcomes of Chiari pelvic osteotomy with labrectomy. The purpose of this study was to evaluate the long-term clinical and radiological outcomes of Chiari pelvic osteotomy for dysplastic hips with labral tears.

Ubiquitin ligase Cbl-b downregulates bone formation through suppression of IGF-I signaling in osteoblasts during denervation.

Unlabelled: Unloading can prevent bone formation by osteoblasts. To study this mechanism, we focused on a ubiquitin ligase, Cbl-b, which was highly expressed in osteoblastic cells during denervation. Our results suggest that Cbl-b may mediate denervation-induced osteopenia by inhibiting IGF-I signaling in osteoblasts.