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

Table 3 Age and body mass index adjusted means (SEM) of bone mass (stiffness index^a and mBMD^b) by osteophyte status at the knee, distal interphalangeal (DIP), proximal interphalangeal (PIP), carpometacarpal/metacarpophalangeal (CMC/MCP) joints.

Osteophyte status	No.	Stiffness index^a	P value*	No.	mBMD^b	P value*
Knee
None	344	70.3 (0.6)		351	2.24 (0.01)
Questionable	86	71.4 (1.1)	0.36	87	2.24 (0.03)	0.93
Definite	127	68.8 (0.9)	0.19	129	2.22 (0.02)	0.41
DIP
None	158	70.0 (0.8)		161	2.23 (0.02)
Questionable	257	70.4 (0.6)	0.70	261	2.22 (0.02)	0.73
Definite	141	69.6 (0.8)	0.80	144	2.26 (0.02)	0.30
PIP
None	400	70.2 (0.5)		410	2.23 (0.01)
Questionable	148	69.9 (0.8)	0.80	148	2.25 (0.02)	0.38
Definite	9	68.8 (3.4)	0.68	9	2.15 (0.08)	0.33
CMC/MCP
None	437	70.1 (0.5)		446	2.23 (0.01)
Questionable	81	68.2 (1.1)	0.10	81	2.19 (0.03)	0.11
Definite	39	73.7 (1.6)	0.04	40	2.32 (0.04)	0.04

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

ISSN: 1471-2474