Table 1.

Synovial fluid lubricin concentrations, hyaluronic acid concentrations, and relative percentages of hyaluronic acid molecular weight categories in sampled high-motion equine joints. Data are presented as least square means ± standard error of the mean.

Joint	[Lubricin], μg/ml	[HA], mg/ml	>6.1 MDa	3.1 – 6.1 MDa	1.5 – 1.3 MDa	0.5 – 1.5 MDa	[TP], g/dl
ACJ (n=17)	72.2 ± 9.7	0.46 ± 0.06	48.3 ± 2.1	37.1 ± 1.4	11.8 ± 0.9	2.82 ± 0.6	0.24 ± 0.06
MCJ (n=18)	99.4 ± 13.5	0.48 ± 0.06	44.4 ± 2.1	38.7 ± 1.5	13.8 ± 0.7	3.14 ± 0.6	0.53 ± 0.05
MCPJ (n=18)	49.4 ± 8.8	0.50 ± 0.06	47.7 ± 1.9	36.8 ± 1.6	13.0 ± 0.7	2.53 ± 0.3	0.02 ± 0.05
MTPJ (n=18)	52.2 ± 9.9	0.72 ± 0.11	54.0 ± 1.5	32.3 ± 1.2	11.2 ± 0.5	2.6 ± 0.3	0.04 ± 0.05
MFT (n=9)	55.1 ± 8.1	0.59 ± 0.20	54.1 ± 1.8	34.7 ± 1.5	10.0 ± 0.7	1.13 ± 0.2	0.37 ± 0.08
TCJ (n=22)	48.2 ± 4.5	0.28 ± 0.03	50.4 ± 2.3	34.6 ± 2.1	10.9 ± 0.9	4.13 ± 0.8	0.11 ± 0.05