Related Experiment Video
Updated: Feb 15, 2026
05:57
A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique
Published on: January 6, 2023
3.8K
Posterior Screw Fixation in Previously Augmented Vertebrae with Bone Cement: Is It Inapplicable?
Jae Hoo Park1, Chang Il Ju1, Seok Won Kim1
1Department of Neurosurgery, Chosun University College of Medicine, Gwangju, Korea.
Journal of Korean Neurosurgical Society
|January 23, 2018
Summary
Posterior screw fixation is feasible in vertebrae previously augmented with bone cement. This surgical technique is a viable option for managing complications and degenerative conditions, showing improved patient pain outcomes.
Area of Science:
- Orthopedics
- Neurosurgery
- Spinal Surgery
Background:
- Vertebral augmentation using bone cement is a common procedure.
- Complications or degenerative conditions may necessitate further surgical intervention.
- Screw fixation in augmented vertebrae presents unique technical considerations.
Purpose of the Study:
- To assess the feasibility of posterior screw fixation in vertebrae previously treated with bone cement.
- To evaluate the impact of cement distribution on screw placement.
- To analyze clinical outcomes and complications associated with the procedure.
Main Methods:
- Retrospective analysis of 14 patients requiring screw fixation in previously augmented vertebrae.
- Indications included cement dislodgement, leakage, neurologic deficits, spondylolisthesis, and foraminal stenosis.
- Assessment of pain scores, cement patterns, and surgical complications.
Main Results:
- Screw fixation was successfully achieved in all cases, irrespective of cement distribution.
- Screw insertion was more challenging in vertebrae with solid cement patterns compared to trabecular patterns.
- Significant pain improvement was observed post-surgery, with no neurologic deterioration.
Conclusions:
- Posterior screw fixation is a feasible surgical option for patients with previously augmented vertebrae.
- The procedure can effectively address complications and degenerative spinal diseases.
- Screw placement technicalities vary based on cement distribution patterns.
Related Concept Videos
01:14Cranial Bones: Superior and Posterior View
8.0K
The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
8.0K
01:30General Structure of a Vertebra
7.1K
A typical vertebra, with the exception of the sacrum and coccyx, consists of a body, a vertebral arch, and seven different projections termed processes. The anterior portion of the vertebrae, the body, supports about half the body’s weight. The vertebral bodies progressively increase in size and thickness from the cervical region to the lumbar region of the vertebral column. The intervertebral discs present between the bodies of adjacent vertebrae firmly unites them, forming a continuous...
7.1K
01:24Hydration of Cement
990
Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
990
01:17Soundness of Cement
591
The soundness of cement refers to the ability of cement paste to retain its volume after setting. Unsound cement can lead to expansion and structural damage due to the presence of free lime, magnesia, and calcium sulfate. Free lime hydrates very slowly, expanding and causing unsoundness, which is difficult to detect because it intercrystallizes with other compounds. Magnesia also reacts with water, forming crystals that can disrupt the cement's structure. Calcium sulfate can create...
591
01:21Screw: Problem Solving
713
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
To evaluate the...
713
01:16Self-Locking Screw
2.6K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
2.6K