Rat Fixation
Rat Fixation - Related Videos
10:09
Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
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Cited by 19 •
2014
One constraint of preclinical research in the field of bone repair is the lack of experimental control over the local mechanical environment within a healing bone lesion. We report the design and use of an external fixator for bone repair with the ability to change fixator stiffness in vivo.
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.
05:42
Improved Suspension Fixation Using Rat Jacket in Rat Acupuncture Experiments
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Cited by 1 •
2023
Here, we present an improved suspension fixation method using a rat jacket to effectively immobilize rats during acupuncture experiments. Furthermore, the structure and application of this fixation apparatus, as well as instructions and evaluation for its utilization in electroacupuncture therapy, is elucidated.
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.
07:51
Acrylic Resin Molding Based Head Fixation Technique in Rodents
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Cited by 4 •
2016
Traditional head fixation techniques have used metallic frames attached on the skull as an interface for head fixation apparatus. This protocol demonstrates a frameless, acrylic resin molding based head fixation technique for behavioral tasks in rodents.
FAQs
The main control comes from reducing movement without blocking the anatomical area being studied. A suitable arrangement keeps the target region accessible while allowing the research team to monitor the rat’s condition. This balance supports more accurate interventions and measurements because changes caused by inconsistent positioning or avoidable handling are reduced.
Fixation choice depends on what the protocol must expose, measure, or collect. A restraint device may be appropriate when stable immobilization is needed, whereas supports or another positioning method may better suit a procedure requiring access to a particular region. The selected arrangement should therefore match the target site, intervention, and monitoring requirements rather than follow one universal setup.
Standardized positioning makes conditions more comparable across procedures. When rats are placed consistently, differences in imaging, physiological measurements, injections, surgery, or sample collection are less likely to arise from orientation or movement alone. This improves reproducibility and helps researchers interpret whether observed results reflect the intervention or measurement of interest rather than avoidable variation in handling.
Appropriate fixation can support welfare by reducing unnecessary handling, movement, and the length of a procedure. It is not simply a matter of holding the animal still: the arrangement must also permit condition monitoring and access to the intended region. In this way, procedural control and welfare considerations are addressed together during experimental planning.
Researchers should select a restraint device, support, or positioning approach that matches the protocol and target region. During the intervention, the arrangement should preserve access to that region while allowing the rat’s condition to be monitored. Consistent use of the selected approach across subjects helps maintain standardized handling and improves comparability of experimental results.
Applications include imaging, surgery, injections, physiological measurements, and sample collection. In each case, controlled positioning can help the operator reach the intended region, perform the intervention more consistently, or collect measurements under comparable conditions. Its value therefore extends from direct medical procedures to experimental workflows where positioning influences accuracy and interpretation.