The advent and widespread adoption of pedicle screw instrumentation prompted the need
for image guidance in spine surgery to improve accuracy and safety. Although the …

The field of spine surgery has changed significantly over the past few decades as once
technological fantasy has become reality. The advent of stereotaxis, intra-operative navigation, …

OBJECTIVE Numerous studies have attempted to delineate the normative value for T1S−CL
(T1 slope minus cervical lordosis) as a marker for both cervical deformity and a goal for …

OBJECT Evaluation of lumbar stability is fundamentally dependent on a clear understanding
of normal lumbar motion. There are inconsistencies in reported lumbar motion across …

Background: Standard fluoroscopic navigation and stereotactic computed tomography–guided
lumbar pedicle screw instrumentation traditionally relied on the placement of Kirshner …

Background: The authors present a novel case of a hemangioblastoma of the optic nerve
producing bilateral optic tract edema in a patient with von Hippel–Lindau disease (VHL). This …

Objective A rare case of an extraventricular colloid cyst located in the olfactory groove extending
downward into the ethmoid sinus is presented. This is the second reported case in the …

The authors present the first reported use of the lateral retroperitoneal transpsoas approach
for interbody arthrodesis in a patient with achondroplastic dwarfism. The inherent anatomical …

BACKGROUND CONTEXT: Numerous studies have attempted to delineate the normative
value for the T1 slope-cervical lordosis (T1S-CL) as a marker for both cervical deformity and as …

BACKGROUND CONTEXT Lumbar disc herniations (LDH) cause significant deficits in
health-related quality of life and can greatly impact physical activity level. Considering that …