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Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.

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Related Experiment Video

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Creation of a Knee Joint-on-a-Chip for Modeling Joint Diseases and Testing Drugs
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Published on: January 27, 2023

Plastinated knee specimens: a novel educational tool.

Neha1, Sanjeev Lalwani, Renu Dhingra

  • 1Senior Resident, Department of Anatomy.

Journal of Clinical and Diagnostic Research : JCDR
|March 2, 2013
PubMed
Summary
This summary is machine-generated.

Plastinating fresh knee joints yields superior specimens for anatomical education compared to old embalmed ones. Freshly plastinated knees offer better color, flexibility, and structural detail for teaching.

Keywords:
KneePlastinationPreservation

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Area of Science:

  • Anatomical Sciences
  • Medical Education Technology
  • Preservation Techniques

Background:

  • Routine dissection of knee joints revealed specimen deterioration due to handling and high formalin concentrations.
  • Plastination was employed to halt specimen degradation and enhance longevity.
  • The study aimed to compare plastinated specimens from old embalmed cadavers with those from fresh formalin-fixed specimens.

Purpose of the Study:

  • To plastinate knee regions from both old embalmed and fresh formalin-fixed cadavers.
  • To showcase extra- and intracapsular structures in plastinated knee specimens.
  • To compare the morphological characteristics, including color, dilatation, and flexibility, of the two groups of plastinated specimens.

Main Methods:

  • Fifteen knee joint specimens were collected: five fresh formalin-fixed (Group I) and ten old embalmed (Group II).
  • Specimens were prepared using the standard S-10 silicone plastination technique.
  • Comparative analysis focused on color, dilatation, and flexibility.

Main Results:

  • All plastinated specimens accurately reproduced tissue details, comparable to natural unfixed specimens.
  • Significant differences were observed between Group I and Group II in color, dilatation, and flexibility.
  • Group I (freshly plastinated) specimens exhibited superior quality with minimal shrinkage, enhanced flexibility, and well-preserved morphology.

Conclusions:

  • Plastinated knee specimens are valuable, non-toxic educational tools for anatomy, radiology, and orthopaedics students.
  • Freshly plastinated knee specimens are aesthetically superior, offering better color, dilatation, and flexibility for teaching.
  • These findings highlight the advantages of using fresh tissues for plastination to create ideal anatomical teaching models.