. 2008 Dec 3;33(6):1495–1500. doi: 10.1007/s00264-008-0699-4

Table 2.

The mean bone mineral density (g/cm², SD) in seven regions and total area during the 5-year follow-up

Gruen region	Postop. (n = 88)	1-year follow-up (n = 88)	2-year follow-up (n = 88)	5-year follow-up (n = 88)
1	1.47 (0.29)	1.44 (0.32)	1.48 (0.30)^a	1.44 (0.28)
2	2.11 (0.30)	2.00 (0.34)^b	2.01 (0.34)^a	1.99 (0.35)
3	2.27 (0.25)	2.18 (0.27)^b	2.19 (0.27)	2.16 (0.29)^a
4	2.45 (0.47)	2.34 (0.31)^b	2.35 (0.31)	2.35 (0.33)
5	2.19 (0.23)	2.13 (0.26)^b	2.14 (0.22)	2.09 (0.30)^a
6	2.04 (0.26)	1.90 (0.26)^b	1.93 (0.26)^a	1.88 (0.30)^a
7	1.88 (0.30)	1.67 (0.31)^b	1.68 (0.31)	1.64 (0.32)^a
Total	2.06 (0.20)	1.95 (0.20)^b	1.97 (0.20)^a	1.94 (0.24)^a

Significant changes as compared to previous BMD value:

^ap < 0.05

^bp < 0.001