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Table 5 Fatty degeneration ratio and lumbar muscularity of the paraspinal muscles of two groups using MRI

From: A comparison of the bilateral decompression via unilateral approach versus conventional approach transforaminal lumbar interbody fusion for the treatment of lumbar degenerative disc disease in the elderly

Variable BDUA Control p-value Significance
Fatty degeneration ratio % preoperative 6 month Change (%) preoperative 6 month Change (%)   
Affected side 7.96 ± 2.86 11.68 ± 3.08 2.69 ± 2.24 8.59 ± 3.77 11.38 ± 4.60 2.79 ± 4.57 0.9601 ns
opposite side 8.93 ± 3.48 9.42 ± 3.17 1.46 ± 2.80 8.89 ± 3.23 12.97 ± 4.58 4.09 ± 5.05 0.0143 *
p-value 0.2893 0.006   0.7472 0.1845    
Significance ns **   ns ns    
Area of muscle/vertebral body %
 Affected side 137.9 ± 37.2 142.3 ± 45.1 4.5 ± 7.9 135.7 ± 16.1 149.9 ± 44.7 1.09 ± 11.4 0.1781 ns
 Opposite side 149.4 ± 36.0 150.9 ± 39.9 1.5 ± 16.1 136.8 ± 37.3 145.7 ± 36.8 −4.11 ± 13.7 0.1039 ns
 p-value 0.1487 0.3536   0.1685 0.3502    
 Significance ns ns   ns ns    
  1. Note: Data shown as number or mean ± standard deviation. P < 0.05, significant difference
  2. Independent samples t test
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