Internal Fixation
Internal Fixation - Related Videos
11:21
Development of a Novel Internal Fixation Model for Rat Radial Fractures: Fracture Healing Assessment and Dorsal Root Ganglion Isolation
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2026
The study innovatively combines sutures and titanium needles for stable internal fixation in a rat radial fracture model. Fracture healing was assessed via micro-computed tomography (micro-CT), and primary dorsal root ganglion (DRG) neurons were isolated and cultured for further investigation.
08:53
Whole Animal Perfusion Fixation for Rodents
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Cited by 531 •
2012
Here we describe a low-cost, rapid, controlled and uniform fixation procedure using 4% paraformaldehyde perfused via the vascular system: through the heart of the rat to obtain the best possible preservation of the brain.
09:18
Internal Standards
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia The goal of many chemical analyses is a quantitative analysis, where the amount of a substance in a sample is determined. In order to accurately calculate the concentration of an unknown from a sample, careful sample preparation is key. Every time a sample is handled or transferred, some of the sample can be lost. There are strategies however, for minimizing sample loss. There are also strategies for coping with sample loss and...
02:00
Internal Energy
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2020
The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial. Although the values for Ufinal and Uinitial cannot be determined for a system, the first law of thermodynamics only...
05:34
A Mini-Invasive Internal Fixation Technique for Studying Immobilization-Induced Knee Flexion Contracture in Rats
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Cited by 1 •
2019
Here, we present a protocol to describe a minimally invasive technique for knee joint immobilization in a rat model. This reproducible protocol, basing on muscle-gap separation modus and the mini-incision skill, is suitable for studying the underlying molecular mechanism of acquired joint contracture.
FAQs
Its central mechanical effect is to limit unwanted movement between bone fragments while maintaining their intended position. This stability supports healing because the repair site is less likely to lose alignment or structural support during recovery. In neurosurgical settings, preserving alignment can also help protect nearby neural tissues and maintain the intended result of reconstruction.
Plates, screws, rods, and wires provide different ways to secure disrupted structures, so their use must match the anatomy and mechanical demands of the repair. Surgeons also consider how the implant will interact with surrounding bone and tissues. Careful design and positioning help provide adequate support while limiting implant-related complications.
Cranial and spinal structures are closely associated with the brain, spinal cord, and other neural tissues. Stabilizing these structures can reduce movement that might compromise the repair or place neural tissue at risk. In addition, fixation may support decompression or spinal fusion, linking mechanical reconstruction with protection and recovery of neurological function.
Planning requires careful assessment of anatomy, biomechanics, and imaging. Anatomy identifies the structures that must be stabilized and the nearby tissues that require protection, while biomechanics helps determine the support needed at the repair site. Imaging contributes information about displacement and structural relationships, allowing implant placement to be planned more precisely.
In neurosurgery, this approach may be used after trauma or during corrective procedures involving cranial or spinal structures. It can stabilize displaced or fractured areas, support decompression, or contribute to spinal fusion. The appropriate application depends on the structural problem, the desired reconstruction, and the need to protect neural tissues.
Evaluation focuses on whether alignment and structural support have been maintained and whether the repair is supporting healing or the intended corrective result. Clinicians must also consider implant-related complications, because device design and placement can affect surrounding anatomy. In neurosurgical cases, functional recovery and protection of neural tissues are important outcomes alongside mechanical stability.