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Table 5 Unstratified and BMI-stratified cutoff values for low paraspinal muscle index and density

From: BMI-stratified cutoff values for spinal sarcopenia in Chinese adults based on CT measures: a multicentre study

  

Men

Women

  

P5

M-2SD

P20

P5

M-2SD

P20

All BMI

L3-PSMI (cm2/m2)

14.9

13.5

14.1

11.4

10.0

12.7

L3-PMI (cm2/m2)

5.2

4.4

5.8

3.4

3.0

4.2

L3_PSMD (HU)

38.6

36.3

35.7

32.4

31.1

29.4

L3_PMD (HU)

42.2

40.1

40.8

39.4

36.9

36.9

Normal

L3-PSMI (cm2/m2)

13.5

12.3

13.4

11.2

10.6

11.9

L3-PMI (cm2/m2)

4.4

3.8

5.5

3.2

2.9

4.1

Overweight

L3-PSMI (cm2/m2)

16.1

15.0

14.4

12.4

11.7

13.3

L3-PMI (cm2/m2)

5.8

5.0

5.9

3.5

3.4

4.3

Obesity

L3-PSMI (cm2/m2)

16.5

15.2

15.3

13.8

11.9

13.6

L3-PMI (cm2/m2)

5.2

4.9

6.4

4.7

3.9

4.5

  1. Note: P20: the lowest 20% percentile value in the elderly participants (> 60 years), P5: the lowest 5th percentile value in young adults (21–40 years), M-2SD: mean value minus two times standard deviation in young adults. BMI, body mass index; PSMI, paraspinal muscle index; PMI, psoas muscle index; PSMD, paraspinal muscle density; PMD, psoas muscle density
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X