Quality control methods in musculoskeletal tissue engineering: from imaging to biosensors

Area of Science:

• * Focuses on tissue engineering within the musculoskeletal field.
• * Addresses the growing need for bone and cartilage replacement solutions.

Background:

• * Tissue engineering shows significant promise for clinical applications.
• * Ensuring construct quality is crucial for patient applicability in musculoskeletal regeneration.

Purpose of the Study:

• * To provide an overview of methods for assessing the quality of tissue-engineered musculoskeletal constructs.
• * To classify these methods (destructive, non-invasive, conservative) for preimplant quality monitoring.
• * To highlight the potential of novel technologies like biosensors.

Main Methods:

• * Review of classical techniques: gene expression analysis, histology.
• * Examination of advanced methods: Raman spectroscopy, microcomputed tomography, biosensors.
• * Classification of assessment methods based on invasiveness and impact on construct viability.

Main Results:

• * Various methods exist to evaluate construct viability, morphology, and matrix deposition.
• * Good practices (GXP) are essential for standardization across sectors.
• * Biosensors offer a promising, minimally invasive approach for preimplant quality control.

Conclusions:

• * Rigorous quality assessment is vital for the clinical translation of musculoskeletal tissue engineering.
• * A tiered approach to method selection, considering invasiveness, is recommended.
• * Biosensors represent a novel, advantageous technology for future preimplant quality monitoring systems.