Association between Histological Composition and Clinical Symptoms in Lumbar Disc Herniation in Different Age Groups.

Study Design: Retrospective study of prospectively collected data.

Objective: To investigate the influence of cartilaginous endplates (CEs) in herniated discs on clinical symptoms and postoperative outcomes in patients with lumbar disc herniation (LDH) in different age groups.

Summary Of Background Data: LDH involving CEs, which are hard and less resorptive, is frequently observed with increasing age and appears to affect the natural course and clinical outcomes following discectomy.

Development of a clinical prediction score for perioperative complications following metastatic spinal surgery (PERCOM) score.

Background: Spinal metastases can impair mobility, worsening the Karnofsky Performance Status (KPS). Surgery for spinal metastases has the potential to improve KPS and extend prognosis, but it is crucial to recognize the elevated risk of perioperative complications. Therefore, the development of a new scoring system to accurately predict perioperative complications in spinal metastatic surgery is essential.

Safety and Clinical Results of Continuous Low-Dose Aspirin in Microendoscopic Laminectomy.

Introduction: It remains controversial whether it is better to continue oral low-dose aspirin (LDA) during the perioperative period in spinal surgery. This study aims to evaluate the safety of continued LDA administration in the perioperative periods of microendoscopic laminectomy (MEL) by assessing perioperative complications and clinical outcomes.

Methods: We ultimately included 88 patients (35 males, 53 females) who underwent one level of MEL for lumbar spinal canal stenosis from April 2016 to March 2022.

The effectiveness of a percutaneous endoscopic approach in a patient with psoas and epidural abscess accompanied by pyogenic spondylitis: a case report.

Background: Psoas or epidural abscesses are often accompanied by pyogenic spondylitis and require drainage. Posterolateral percutaneous endoscopic techniques are usually used for hernia discectomy, but this approach is also useful in some cases of psoas or lumbar ventral epidural abscess. We here report a case of psoas and epidural abscesses accompanied by pyogenic spondylitis that was successfully treated by percutaneous endoscopic drainage.

The morphological relationship between lumbosacral transitional vertebrae and lumbosacral pedicle asymmetry.

Introduction: The clinical significance of lumbosacral transitional vertebrae (LSTV) has been reported. However, the association between LSTV and lumbosacral pedicle anatomical anomaly has not been investigated. We hypothesized that LSTV might be associated with lumbosacral anatomical anomaly.

Does an osteoporotic vertebral fracture treated by balloon kyphoplasty successfully achieve bone union during the follow-up? A retrospective study with a minimum 2-year follow-up.

Objective: To investigate whether bone union is achieved in osteoporotic vertebral fracture (OVF) patients who undergo balloon kyphoplasty (BKP).

Methods: Thirty-six vertebrae, which were followed-up for more than two years after BKP, were evaluated in the present study. Bone union was assessed by using CT scans and lateral X-ray films obtained in the sitting and supine positions.

Simultaneous Use of Both Bilateral Intralaminar and Pedicle Screws for C2 Stabilization.

Four patients underwent stabilization surgery using both bilateral C2 pedicle screw (PS) and intralaminar screw (LS). Neural and vascular injury resulting from incorrect screw placement was assessed using computed tomography (CT). The evaluation of bone union was assessed by lateral flexion-extension X-ray films and CT.

A new sagittal parameter to estimate pelvic tilt using the iliac cortical density line and iliac tilt: a retrospective X-ray measurement study.

Background: When spinal kyphosis increases, the compensatory mechanism activates and the pelvic position changes. Increasing the pelvic tilt, which is the orientation of the pelvis with respect to the femoral head, is known to associate with the clinical symptoms in kyphosis in the aging population. It is often difficult to detect the femoral head on radiographs, limiting the ability to determine the pelvic tilt.

A Retained Epidural Catheter Fragment Treated by Surgery.

The breakage of an epidural catheter is an extremely rare complication. We describe a unique case where a retained epidural catheter fragment after epidural anesthesia was treated by surgery. The epidural catheter broke during its removal, requiring surgery to remove the retained catheter.

A shallow chest correlates with the aortic position in the normal spine: features resembling those observed in structural scoliosis.

Background: Right thoracic curvature, rib cage deformities and aortic left shift are features of adolescent idiopathic scoliosis that are correlated with each other. We recently reported that disturbance of ribcage development results in progressive thoracic scoliosis in mice. Recently, it has been confirmed that the normal spine exhibits right thoracic curvature and rib cage deformities and that these deformities worsen during the adolescent period.

Ordinary disc herniation changing into posterior epidural migration of lumbar disc fragments confirmed by magnetic resonance imaging: a case report of a successful endoscopic treatment.

The posterior epidural migration of lumbar disc fragments is an extremely rare event with an unknown pathogenesis. To the best of our knowledge, there are no previously reported cases of a change of ordinary disc herniation into the posterior epidural migration of lumbar disc fragments as confirmed by magnetic resonance imaging (MRI). A 26-year-old male presented to our department complaining of left buttock and lateral leg pain.

A new method for measuring torsional deformity in scoliosis.

Background: The importance of spinal rotational and torsional deformity in the etiology and the management of scoliosis are well-recognized. For measuring the posterior spinal component rotation, Ho's method was reported to be reliable. However, there is no practical method to measure the anterior spinal component rotation.

Endoscopic decompression for intraforaminal and extraforaminal nerve root compression.

Objective: The purpose of this study was to evaluate the outcome of endoscopic decompression surgery for intraforaminal and extraforaminal nerve root compression in the lumbar spine.

Methods: The records from seventeen consecutive patients treated with endoscopic posterior decompression without fusion for intaforaminal and extraforaminal nerve root compression in the lumbar spine (7 males and 10 females, mean age: 67.9 ± 10.