Effects of low intensity pulsed ultrasound with and without increased cortical porosity on structural bone allograft incorporation

Table 1 Decalcified Histology Scoring System Designed to Quantify Allograft Healing

		CONNECTIVITY		Ob/Oc CONTINUUM	GRAFT REVITALIZATION
Score	Host-Allograft Cortical Bridging	Callus Tissue Type/Host-Graft Direct Interface	Callus (% of c.t.)	Host & Graft	Graft Vascularity	Live Cells In Graft
0	No bridging	Fibrous/pseudoarthrosis	None	No resorption	None	No
1	BC on 1 side	Cartilage	50%	Extensive resorption/No Ob	Some	Yes
2	BC on 2 sides	Endochondral ossification	100%	Some Resorption/No Ob	Moderate
3	BC and cortex on 1 side	Bone	150%	Extensive Resorption/Some Ob	Prolific
4	BC and cortex on 2 sides		200%	Some Resorption/Some Ob
5			> 200%	Some Resorption/Extensive OB
6				Extensive Resorption/Extensive OB

Legend: BC = bridging callus; Ob = osteoblast; Oc = osteoclast; callus area thickness is expressed as percent (%) of cortical thickness (c.t.)

ISSN: 1749-799X