Head Holder Fixation
Head Holder Fixation - Related Videos
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.
02:34
Mouse Headpost Implantation: A Method for Head Fixation in Rodents
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2023
This video shows a headpost implantation surgery in murine model. The headpost is used not only to head-fix and therefore restrain the mouse during experimentation, but also to securely attach a head device in freely moving animals.
07:10
Modified Long Head of Biceps Tendon Rerouting and Fixation as Partial Capsular Reconstruction for Massive Irreparable Rotator Cuff Tears
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2026
We propose a technical modification for capsular reconstruction that utilizes arthroscopic rerouting and fixation of the long head of the biceps tendon to enhance the repair of massive irreparable rotator cuff tears.
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.
08:17
Isolation, Fixation and Characterization of Juvenile Gilthead Seabream Head Kidney Leukocytes by Flow Cytometry
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Cited by 1 •
2025
This manuscript describes the isolation and fixation of leukocytes extracted from gilthead seabream's head-kidney and the assessment of their viability by flow cytometry. This work contributes to the standardization of protocols and leverages the processing of a higher number of samples without compromising sample quality, promoting advancements in fish immunology knowledge.
FAQs
Rigid stabilization reduces changes in head position that could otherwise alter the relationship between an instrument, treatment target, and surrounding anatomy. Maintaining that relationship helps researchers perform localized procedures more consistently across animals. The resulting measurements and treatment responses are easier to compare because differences are less likely to arise from variable positioning alone.
Ear bars and a bite bar provide separate points of support that help maintain a consistent anatomical position under anesthesia. Together, these supports limit movement during procedures that require precise access to the brain. Their value is procedural consistency: the same positioning framework can support repeated measurements, localized delivery, imaging, or irradiation across experimental subjects.
Stereotaxic delivery depends on reaching a defined intracranial location with high positional consistency. Head stabilization helps preserve the intended relationship between the animal’s skull and the delivery pathway, supporting more reproducible placement of tumor cells or therapeutics. This is especially important when treatment effects are interpreted across animals, because inconsistent access can complicate comparisons.
Treatment response measurements can be affected by where a tumor, biopsy site, imaging region, or irradiation field is accessed. Consistent positioning helps separate these procedural influences from the biological effect being studied. In brain cancer models, that improves comparability among animals and strengthens interpretation of whether observed differences reflect the treatment rather than variation in head placement.
The animal is placed under anesthesia, the skull is positioned within the rigid frame, and supports such as ear bars and a bite bar are used to maintain the selected anatomical position. Researchers can then perform the planned stereotaxic delivery, imaging, biopsy-related procedure, or localized irradiation. Consistency during setup is central to obtaining comparable experimental measurements.
The approach supports several localized procedures in brain cancer models, including stereotaxic delivery of tumor cells, administration of therapeutics, intracranial imaging, biopsy-related work, and localized irradiation. These applications share a need for stable access to a defined region. Using consistent fixation across procedures can improve reproducibility when researchers compare disease development or treatment responses.
Improved stabilization can support more reliable measurements of procedure-related access and treatment response. By reducing positional variation, researchers can compare animals more confidently during intracranial imaging, therapeutic delivery, biopsy-related procedures, or irradiation studies. The main benefit is stronger experimental comparability, allowing observed differences to be interpreted in relation to cancer biology or treatment rather than inconsistent positioning.