Figure 3

The cross-sectional areas of the total posterior extensor muscles at each intervertebral disc level. The cross-sectional areas of the total posterior extensor muscles significantly increased over 10 years at all levels from T1/2 to T11/12.

The cross-sectional areas of the total posterior extensor muscles at each intervertebral disc level. The cross-sectional areas of the total posterior extensor muscles significantly increased over 10 years at all levels from T1/2 to T11/12.