DeLee and Charnley zone | 3 months | 12 months | 24 months | P valuea | |||
---|---|---|---|---|---|---|---|
Absolute change (g/cm2) | Relative change (%) | Absolute change (g/cm2) | Relative change (%) | Absolute change (g/cm2) | Relative change (%) | ||
I | −0.4 (0.3) | −19.0 (9.0) | −0.4 (0.3) | −18.0 (13.0) | − 0.4 (0.3) | −17.1 (11.0) | < 0.0001 |
II | −0.3 (0.4) | −13.1 (19.0) | − 0.2 (0.6) | − 8.0 (30.0) | − 0.1 (0.6) | −4.0 (29.0) | 0.171 |
III | − 0.3 (0.1) | −17.0 (9.0) | − 0.3 (0.2) | −16.0 (10.3) | − 0.2 (0.3) | − 15.1 (17.0) | < 0.0001 |