Table 2 Frequency of degenerative lesions by age group. Frequencies are given relative to the respective age group with absolute numbers in brackets.

< 25

16.9% (13/77)

10.4% (8/77)

1.3% (1/77)

25–34

35.7% (45/126)

15.1% (19/126)

0.0% (0/126)

35–44

52.1% (63/121)

33.1% (40/121)

5.0% (6/121)

45–54

43.1% (53/123)

52.8% (65/123)

8.1% (10/123)

55–64

46.4% (58/125)

54.4% (68/125)

8.8% (11/125)

65–74

50.8% (62/122)

71.3% (87/122)

12.3% (15/122)

≥ 75

64.5% (80/124)

77.4% (96/124)

26.6% (33/124)

Total

45.7% (374/818)

46.8% (383/818)

9.3% (76/818)