Graft_Material_8_3_16A therapeutic Level II study by DiGiovanni et al.  in the August 3, 2016 edition of The Journal of Bone & Joint Surgery examined the relationship between successful foot/ankle fusions and the amount of graft material used. The authors found that among 573 procedures in which graft material (either autograft or AUGMENT bone graft) occupied ≥50% of the cross-sectional fusion space at nine weeks, 81% were successfully fused at 24 weeks. However, among 101 procedures with <50% of the graft space filled, only 21% were successfully fused at 24 weeks.

The authors determined both graft-fill percentages at nine weeks and fusion success at 24 weeks using CT scans.

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