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

Table 6 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, ages 60 years over.

Osteophyte status	No.	Stiffness index^a	P value*	No.	mBMD^b	P value*
Knee
None	216	65.5 (0.7)		219	2.12 (0.02)
Questionable	74	67.7 (1.1)	0.10	75	2.12 (0.03)	0.89
Definite	109	65.4 (1.0)	0.95	111	2.11 (0.02)	0.77
DIP
None	78	64.2 (1.1)		79	2.07 (0.03)
Questionable	192	66.8 (0.7)	0.06	195	2.11 (0.02)	0.26
Definite	129	65.6 (0.9)	0.32	131	2.14 (0.02)	0.05
PIP
None	257	65.8 (0.6)		263	2.11 (0.02)
Questionable	133	66.2 (0.8)	0.76	133	2.14 (0.02)	0.29
Definite	9	64.5 (3.2)	0.68	9	2.02 (0.08)	0.32
CMC/MCP
None	291	65.9 (0.6)		296	2.12 (0.01)
Questionable	71	64.2 (1.1)	0.18	71	2.06 (0.03)	0.10
Definite	37	69.6 (1.6)	0.03	38	2.20 (0.04)	0.06

a: Stiffness index values were missing for 6 women. b: metacarpal bone mineral density. * P value versus women with no osteophytes.

ISSN: 1471-2474