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Table 8 Age and body mass index adjusted means (SEM) of bone mass (stiffness indexa and mBMDb) by osteoarthritis (OA) grade at the knee, distal interphalangeal (DIP), proximal interphalangeal (PIP), carpometacarpal/metacarpophalangeal (CMC/MCP) joints. (n = 567)

From: Appendicular bone mass and knee and hand osteoarthritis in Japanese women: a cross-sectional study

OA grades

No.

Stiffness indexa

P value*

No.

mBMDb

P value*

Knee

      

   0

 

70.6 (0.6)

  

2.25 (0.02)

 

   1–4

 

69.6 (0.6)

0.28

 

2.22 (0.01)

0.15

DIP

      

   0

 

71.3 (1.0)

  

2.26 (0.02)

 

   1–4

 

69.8 (0.5)

0.18

 

2.23 (0.01)

0.29

PIP

      

   0

 

70.5 (0.5)

  

2.23 (0.01)

 

   1–4

 

69.4 (0.7)

0.26

 

2.24 (0.02)

0.46

CMC/MCP

      

   0

 

70.1 (0.5)

  

2.24 (0.01)

 

   1–4

 

70.0 (0.9)

0.92

 

2.22 (0.02)

0.52

  1. a: Stiffness index values were missing for 10 women. b: metacarpal bone mineral density. *P value versus women with no OA.