Motion-segment | L1 – L2 | L2 – L3 | L3 – L4 | L4 – L5 | L5 – S1 | Number of subjects with at least one level above 2SD or below 2SD (%) |
---|---|---|---|---|---|---|
Mean (SD) segmental motion [degrees] for asymptomatic subjects | 3.4 (1.6) | 4.1 (2.5) | 4.6 (2.2) | 4.1 (1.9) | 4.7 (2.3) | |
+2SD [degrees] | 6.6 | 9.1 | 9.0 | 7.9 | 9.3 | |
Asymptomatic (N= 20) | 0 | 2a | 0 | 1a | 1 | 3 (15%) |
Symptomatic (N = 45) | 5b | 1b | 0 | 5 | 2 | 12 (26.7%) |
-2SD [degrees] | 0.2 | -0.9 | 0.4 | 0.3 | 0.1 | |
Asymptomatic (N = 20) | 0 | 0 | 0 | 1 | 0 | 1 (5%) |
Symptomatic (N = 45) | 1 | 0 | 2 | 0 | 1 | 4 (8.9%) |