Overall (n = 490) | 40-49 (n = 50) | 50-59 (n = 111) | 60-69 (n = 153) | 70-79 (n = 148) | ≥80 (n = 28) | |
---|---|---|---|---|---|---|
KL ≥ 2 | ||||||
L1/2 | 163 (33.3) | 4 (8.0) | 17 (15.3) | 48 (31.3) | 73 (52.7) | 21 (75.0) |
L2/3 | 237 (48.4) | 6 (12.0) | 47 (42.3) | 75 (49.0) | 88 (59.5) | 21 (75.0) |
L3/4 | 249 (50.8) | 10 (20.0) | 50 (45.0) | 82 (53.6) | 86 (58.1) | 21 (75.0) |
L4/5 | 200 (40.8) | 7 (14.0) | 31 (27.9) | 72 (47.1) | 76 (51.4) | 14 (50.0) |
L5/S1 | 157 (32.0) | 4 (8.0) | 21 (18.9) | 37 (24.1) | 70 (47.2) | 15 (53.6) |
KL ≥ 3 | ||||||
L1/2 | 48 (9.8) | 1 (2.0) | 3 (2.7) | 12 (7.8) | 25 (16.9) | 7 (25.0) |
L2/3 | 47 (9.6) | 0 (0) | 3 (2.7) | 15 (9.8) | 27 (18.2) | 2 (7.1) |
L3/4 | 39 (8.0) | 1 (2.0) | 2 (1.8) | 11 (7.2) | 19 (12.8) | 6 (21.4) |
L4/5 | 71 (14.5) | 0 (0) | 7 (6.3) | 28 (18.3) | 29 (19.6) | 7 (25.0) |
L5/S1 | 84 (17.1) | 2 (4.0) | 13 (11.7) | 28 (18.3) | 36 (24.3) | 5 (17.9) |