A simplified procedure for preparation of undecalcified human bone sections

Area of Science:

• Orthopedics
• Materials Science
• Anthropology

Background:

• Undecalcified bone sectioning is crucial for quantitative microscopic analysis.
• Existing methods often require extensive grinding and polishing, which can be time-consuming and introduce artifacts.

Purpose of the Study:

• To describe a new apparatus for efficient sectioning of hard, undecalcified bone.
• To enable precise section preparation for subsequent microscopic examination.

Main Methods:

• Fresh or archeological human bone slices (4-5 mm thick) were dehydrated and embedded in epoxy resin.
• A low-speed rim-type diamond cut-off wheel and a slowly advancing table with a rotating mount were used for sectioning.
• Sections were cleaned in an ultrasonic bath, eliminating the need for grinding and polishing.

Main Results:

• The apparatus successfully produced bone sections with a thickness of 80 microns +/- 1%.
• The prepared sections were suitable for quantitative microscopic examination using transmitted light.
• The method proved effective for both fresh and archeological bone samples.

Conclusions:

• The described apparatus offers an efficient and precise method for preparing undecalcified bone sections.
• This technique simplifies sample preparation, making quantitative microscopic analysis more accessible.
• The method preserves sample integrity, crucial for both clinical and archeological studies.