a significant trendP < 0.001
In all groups, the proportion of bone in the fusion mass steadily increased over time in a significant trend ( P < 0.001), leading up to over 55% of bone after 26 weeks.
In all groups, the proportion of bone in the fusion mass steadily increased over time in a significant trend ( P < 0.001), leading up to over 55% of bone after 26 weeks.