Parkinson's disease (PD) patients frequently have several spinal deformities leading to postural instabilities including camptocormia, myopathy-induced postural deformity, Pisa syndrome, and progressive degeneration, all of which adversely affect daily life activities. To improve these postural deformities and relieve the related neurologic symptoms, patients often undergo spinal instrumentatio...

OBJECT The goal of this study was to analyze the placement accuracy and complications of thoracolumbar pedicle screws (PSs) inserted using 3D image guidance in a large patient cohort. METHODS The authors reviewed the charts of 220 consecutive patients undergoing posterior spinal fusion using 3D image guidance for instrumentation placement. A total of 1084 thoracolumbar PSs were placed using e...

STUDY DESIGN Biomechanical analysis. OBJECTIVE To determine the relative strengths of 2 different forms of revision spinal instrumentation using a validated, constant load, cyclic testing mechanism. SUMMARY OF BACKGROUND DATA Spinal fusion with instrumentation procedures are on the rise. As such, so are revision procedures. A few studies have looked at revision instrumentation techniques. B...

BACKGROUND Data on the clinical outcome after spinal fusion in the elderly patient are rare. Limitation of most studies were small population, evaluation of the perioperative complication rate and the radiographic assessment. Therefore the aim of the current study was to evaluate the clinical outcome of patients older than 75 years who underwent a spinal fusion procedure (instrumentation and po...

STUDY DESIGN A retrospective study. OBJECTIVE To analyze the long-term proximal junctional change in adolescent idiopathic scoliosis (AIS) following segmental posterior spinal instrumentation and fusion 5 years or more after surgery. SUMMARY OF BACKGROUND DATA No study has concentrated on time-dependent long-term proximal junctional change in AIS following segmental posterior spinal instrum...

INTRODUCTION Septic infection of a lumbar intervertebral disc is a serious disorder which is often difficult to diagnose and appropriately treat because of the rarity of the disease, the varied presentation of symptoms, and the frequency of low-back pain within the overall population. Its etiology can be pyogenic, granulomatous, fungal, or parasitic; its incidence is rising due to increased pat...

Lumbar interbody fusion is a common procedure owing to the high prevalence of degenerative spinal disorders. During such procedures, carbon fiber-reinforced polymer (CFRP) cages are frequently utilized to fill the void created between adjacent vertebral bodies, to provide mechanical stability, and to carry graft material. Failure of such implants can lead to significant morbidity. We discuss th...

1. Introduction Adjacent segment degeneration (ASD) has been reported as the one of late serious complication after spinal fusion surgery [1-3]. Presumably, the immediate rigidity produced by instrumentation causes more stress leading to accelerated degeneration at adjacent levels [2]. Many previous studies have been corroborated a trend toward earlier development of ASD with instrumentation as...