SU11274 ameliorated pathological bone loss in CIA mice. (a) Time course changes in arthritis clinical score from CIA mice treated with PBS, and SU11274 respectively (n = 6). (b) Representative TRAP staining images and parameters of distal femoral osteoclasts from CIA mice (n = 12). Scale bars were 100 μm and 25 μm. (c) Representative micro-CT images (trabecular bones, Scale bars, 0.5 mm; cortical bones, Scale bars, 1 mm) from the hind paws of mice (n = 6). (d) The values of micro-CT parameters (BMD, BV/TV, BS/TV, Tb.Th, Tb.N and Tb. Sp) of the proximal tibial bones from the CIA mice after treatment in the respective group (n = 6). All data are shown as means ± SD; ∗p < 0.05, ∗∗p < 0.01.