Four cases of combination fractures of the atlas and axis are presented. Three types of management were performed: plaster immobilization, odontoid screw fixation combined with atlantoaxial pedicle screw fixation, occipito-cervical fusion with anterior operation by staged. Based on a literature review and our experience, treatment strategies is discussed according to the stability of the upper ...

STUDY DESIGN An in vitro biomechanical study to compare 2 different dorsal screw fixation techniques in the cervical spine with respect to primary stability and stability after cyclic loading. OBJECTIVES To investigate if the biomechanical stability is better in pedicle screw or in lateral mass fixation. SUMMARY OF BACKGROUND DATA In patients with poor bone quality who require multisegmenta...

This study was designed to observe the clinical outcome of anterior versus posterior instrumentation in the treatment of Pyogenic vertebral osteomyelitis of the lumbar spine. Twenty-three patients underwent either anterior (anterior fixation group) or posterior fixation (posterior fixation group) combined with a single-stage anterior radical debridement and had an average follow-up of 38 months...

OBJECTIVES We explored the efficacy of minimal invasive surgery including one-stage debridement and intervertebral fusion through extreme lateral channel (XLIF) combined with lateral or percutaneous posterior pedicle screw fixation for the treatment of lumbar spine tuberculosis. METHODS Twenty two patients with lumbar tuberculosis who underwent surgery with XLIF technique and internal fixatio...

The injury mechanism of traumatic cervical spine injury varies, and Allen et al. divide cervical spine injuries into 6 types based on the direction of external force at the time of injury. In this report, we present 2 cases as Lateral Flexion Stage 2. A 51-year-old male (Case 1) was injured in a traffic accident. His conscious level was JCS III-200, and he was found to have a Frankel Grade of B...

OBJECTIVE To present a new theoretical construct, the Minimum Energy Hypothesis, which explains structural changes observed in the spine concomitant to spinal joint fixation resolution in initial investigations. DESIGN Theoretical analysis. HYPOTHESIS A unified theory of manipulative effectiveness is proposed that integrates the fixation and sensory tonus models of manipulation. The theory ...

Arthrofibrosis is a major complication of tibial spine fracture treatment in children, potentially resulting in knee pain, quadriceps weakness, altered gait, decreased function, inability to return to sports, and long-term osteoarthritis. Thus, prevention rather than treatment of arthrofibrosis is desirable. The purpose of this study was to evaluate an aggressive postoperative rehabilitation an...

BACKGROUND Short-segment pedicle screw instrumentation (SSPI) is used for unstable burst fractures to correct deformity and stabilize the spine for fusion. However, pedicle screw loosening, pullout, or breakage often occurs due to the large moment applied during spine motion, leading to poor outcomes. The purpose of this study was to test the ability of a newly designed device, the Trans-Endpla...

AIMS The accuracy of non-radiographic measurement of the spinal shape is influenced by postural sway (PS). The aim of this study was to determine whether certain examination postures prevent PS without changing key spinal characteristics. METHODS We tested 1) natural standing position (posture A), 2) fixation postures standing with the support of the upper limbs against a wall (posture B) and...

STUDY DESIGN Cadaver study. OBJECTIVE To determine the bone density of lumbar vertebral anatomic subregions. Bone mineral density (BMD) is a major factor in osseous fixation construct strength. The standard region for implant fixation of the spine is the pedicle; however, other regions may be more viable options with higher bone quality. METHODS Using computed tomography images, the spine w...