Table 1: Mean and standard deviation of the total thickness of articular cartilage.

Age group16–20 yrs21–30 yrs31–40 yrs41–50 yrs51–60 yrs61–70 yrs71–80 yrs81–90 yrs

Total thickness (in mm) 2 . 3 4 ± 0 . 4 7 2 . 3 5 ± 0 . 2 8 2 . 2 9 ± 0 . 3 6 2 . 3 9 ± 0 . 4 9 2 . 4 2 ± 0 . 2 5 2 . 3 7 ± 0 . 2 1 2 . 4 1 ± 0 . 5 4 1 . 9 0 ± 0 . 2 3