Placement of Unilateral Cortical Bone Trajectory Screws in Previously Instrumented Pedicle without Removal of Existing Hardware for Adjacent Segment Disease.

Adjacent segment disease (ASD) in the lumbar spine is a possible consequence in segments adjacent to a fusion. As the number of lumbar fusions in the United States increases, the rates of ASD will continue to climb. There are several treatment options for ASD with open decompression and extension of the fusion being common.

Rapidly Progressive Myelopathy Caused by Aggressive Vertebral Hemangioma.

Introduction: Vertebral hemangiomas are the most common benign tumors of the spine, having an incidence of 10-12% in the general population. They are asymptomatic, incidental findings in the vast majority of patients; however, in rare cases, they can expand to cause neural compression. Aggressive lesions of this sort are most commonly found in the thoracic spine, and expansion leads to the subacute development of myelopathy.

Sagittal Plane Correction Using the Lateral Transpsoas Approach: A Biomechanical Study on the Effect of Cage Angle and Surgical Technique on Segmental Lordosis.

Study Design: Cadaveric biomechanical study.

Objective: To determine the degree of segmental correction that can be achieved through lateral transpsoas approach by varying cage angle and adding anterior longitudinal ligament (ALL) release and posterior element resection.

Summary Of Background Data: Lordotic cage insertion through the lateral transpsoas approach is being used increasingly for restoration of sagittal alignment.

Predicting patients with concurrent noncontiguous spinal epidural abscess lesions.

Background Context: Spinal epidural abscess (SEA) is a serious condition that can lead to significant morbidity and mortality if not expeditiously diagnosed and appropriately treated. However, the nonspecific findings that accompany SEAs often make its diagnosis difficult. Concurrent noncontiguous SEAs are even more challenging to diagnose because whole-spine imaging is not routinely performed unless the patient demonstrates neurologic findings that are inconsistent with the identified lesion.

Independent predictors of failure of nonoperative management of spinal epidural abscesses.

Background Context: The notion that all patients with spinal epidural abscess (SEA) require surgical decompression has been recently challenged by reports of successful medical management of select patients with SEA.

Purpose: The purpose of this study was to identify the independent variables that determine success or failure of medical management of SEA.

Study Design/setting: This was a retrospective, case-control study.

Adult Scheuermann kyphosis: evaluation, management, and new developments.

Scheuermann kyphosis is a structural hyperkyphosis defined radiographically as anterior wedging of ≥5° of at least three consecutive vertebral bodies. Typically, the disease develops during adolescence but may not present until adulthood. The etiology remains unknown.

Risk factors for vascular repair and compartment syndrome in the pulseless supracondylar humerus fracture in children.

Background: The aims of this study were to determine how often fracture reduction alone restored pulses and vascular perfusion in displaced supracondylar humerus fractures with absent distal pulses on presentation, and whether any preoperative factors were associated with the need for vascular repair and vascular complications.

Methods: We reviewed 1255 supracondylar humerus fractures in children treated operatively over 12 years at one institution. We identified 33 patients who presented with displaced supracondylar humerus fractures and absent distal pulses.