Table 4:
Mean and standard deviation of the area of subchondral cavities in
μ
m
2
in different age group.
16–20 yrs
3
6
1
8
.
2
3
±
1
8
6
5
.
4
3
21–30 yrs
6
6
0
8
.
1
9
±
7
3
1
2
.
1
3
31–40 yrs
5
4
0
4
.
2
5
±
1
5
4
9
.
5
5
41–50 yrs
3
8
4
5
.
2
5
±
1
2
2
7
.
4
2
51–60 yrs
8
4
1
9
.
5
2
±
2
6
7
3
.
3
8
61–70 yrs
2
8
8
5
.
5
8
±
9
8
1
.
4
8
71–80 yrs
3
4
8
0
.
9
4
±
1
7
0
2
.
9
7
81–90 yrs
3
6
5
3
.
0
3
±
1
1
9
2
.
7
5