Tissue Clearing and Its Application in the Musculoskeletal System

Area of Science:

• Biomedical Engineering
• Anatomy
• Histology

Background:

• Traditional histological sections limit 3D musculoskeletal research.
• A need exists for advanced 3D imaging of bones and muscles.
• Optical tissue-clearing presents a novel approach for musculoskeletal investigation.

Purpose of the Study:

• To review and evaluate optical tissue-clearing technologies for musculoskeletal research.
• To provide guidelines for applying these technologies to bones and muscles.
• To inform researchers on informed decision-making for musculoskeletal imaging.

Main Methods:

• Physically and chemically eliminating refractive components in tissues.
• Replacing tissue liquid with high-refractive-index chemicals.
• Utilizing optical tissue-clearing for 3D reconstruction at cellular/subcellular scales.

Main Results:

• Optical tissue-clearing enhances imaging depth and resolution.
• Musculoskeletal tissues present unique challenges (low lipids, high hemoglobin, collagen, hydroxyapatite) compared to neural tissues.
• The technology allows for detailed 3D visualization of musculoskeletal structures.

Conclusions:

• Optical tissue-clearing is a promising technology for musculoskeletal research.
• Adaptations are needed to address the specific composition of bones and muscles.
• Guidelines are provided to facilitate the expanded use of this technique in the musculoskeletal field.