In Vivo Healing of Meniscal Lacerations Using Bone Marrow-Derived Mesenchymal Stem Cells and Fibrin Glue

Table 1

Explanation of grading rubric used in the current study and the coding used for the results.

Category/score	0	1	2	3
Gross observations
Adherent vessels	Vessels on 1 side only	Vessels on 2 sides	Multiple vessels on multiple sides
Tissue adhesion	No Tissue Adhesion	Areas of external tissue adhered
Bond	No bond	Flexible bond	Firm attachment
H&E section observations
Cellular in-growth	Acellular along cut edge	Incomplete cellular repopulation	50% in-growth	Complete repopulation along cut edge
Predominant cell type		Small round cells (fibrocytes)	Larger less dense cells (inflammatory origin)	50-50 dispersed
Fiber organization	Disorganized	50% parallel fibers	Greater than 70% organization
Fibrinous tissue between sections	Large amounts of fibrous tissue present	No large fibrous tissue sections present
SOFG section observations
SOFG % positive staining	None	Less than 50%	More than 50%	Near 100%
Thickness of repair tissue		Thin	Medium	Thick
Cell repopulation	Rare	Moderate	Frequent
Total bond distance	25%	25–50%	50–75%	75–100%