"Critical pedicle wall" breaches analysis in complex spinal deformity using O-arm navigation.

Background: Free-hand and fluoroscopic-guided pedicle screw placement has been associated with higher rates of pedicle breaches (frequency range 15-40% especially in deformed pedicles). Neurological complications are more "critical" (i.e.

Chronic Intramedullary Spinal Cord Abscess Mimicking Intramedullary Spinal Cord Tumor-"Phantom Tumor": A Case Report.

Case: A 33-year-old woman with back pain and radiculopathy had presented with bilateral ankle weakness. MRI showed an intramedullary conus lesion suggestive of neoplasm, but posterior midline durotomy revealed only pus. Pus samples showed Staphylococcus aureus, which was treated with 6 weeks of antibiotics.

Emergently Managed Rare Case of Extraosseous Hemorrhagic Spinal Epidural Cavernous Hemangioma: A Case Report.

Introduction: Commonly spinal cavernous hemangioma (CH) is found in vertebral body at thoracic level. Purely extraosseous epidural CH contributes only 4% of all CH. In addition, these patients usually present in their 3rd-6th decade of life.

Efficacy of less Invasive modified O-arm navigated delta fixation in osteoporotic high-grade spondylolisthesis: "a LIMO delta technique".

Purpose: In 1994, the technique of transdiscal screws fixation in spondylolisthesis was introduced but did not gained popularity as it failed to address problems with spinal sagittal imbalance, retroverted pelvis, pseudoarthrosis, implant failure and neural injury. Majority of problems were due to lack of clear indications; hence, in this study, with modification of traditional technique and use of O-arm navigation for selected group of patients, we have addressed the above problems and given good to excellent functional outcomes.

Methods: We did prospective study on 15 patients with osteoporotic high-grade spondylolisthesis Meyerding grade 3 & 4 admitted in period 2020-2021.