Which statement correctly describes the normal clearance angle values for paraffin and frozen sections?

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Multiple Choice

Which statement correctly describes the normal clearance angle values for paraffin and frozen sections?

Clearance angle is how much the knife is tilted away from the block edge, which influences how the blade shears and how much friction the tissue experiences during cutting. Paraffin-embedded tissue is supported by wax and cuts with relatively stable surfaces, so a smaller clearance angle around 2-4 degrees helps produce a smooth surface with minimal tissue distortion. Frozen sections, being water-rich and more prone to brittleness and chatter from ice formation, benefit from a larger clearance angle around 5-7 degrees to reduce friction and tearing. This combination—smaller angle for paraffin and larger angle for frozen—best matches the way each tissue type behaves under the knife, minimizing artifacts and yielding better-quality sections.

Clearance angle is how much the knife is tilted away from the block edge, which influences how the blade shears and how much friction the tissue experiences during cutting. Paraffin-embedded tissue is supported by wax and cuts with relatively stable surfaces, so a smaller clearance angle around 2-4 degrees helps produce a smooth surface with minimal tissue distortion. Frozen sections, being water-rich and more prone to brittleness and chatter from ice formation, benefit from a larger clearance angle around 5-7 degrees to reduce friction and tearing. This combination—smaller angle for paraffin and larger angle for frozen—best matches the way each tissue type behaves under the knife, minimizing artifacts and yielding better-quality sections.

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