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Doppler sonography of the medial arterial blood supply to the coxofemoral joints of 36 medium to large breed dogs and its relationship with radiographic signs of joint disease

¹ Division of Small Animal Radiology, University of Bern, Postfach 3001 Bern, Switzerland
² Division of Clinical Research, University of Bern, Postfach 3001 Bern, Switzerland
³ Institute of Veterinary Anatomy, Department of Clinical Veterinary Medicine, University of Bern, Postfach 3001 Bern, Switzerland

The medial arterial supply to 68 of the 72 coxofemoral joints of 36 medium to large breed dogs was examined ultrasonographically. The medial circumflex femoral artery and three branches were identified; the artery and its transverse branch were identified in all 68 joints, and the deep branch was identified in 61 joints, and the ascending branch was identified in 63. However, the acetabular and obturator branches were not identified. The pulsatility index, the mean velocity and the peak systolic velocity of the medial circumflex femoral artery were determined and associated with a radiographic score of degenerative coxofemoral joint disease and a lath distraction index (LDI). In joints with a LDI greater than 0·35, the pulsatility index was significantly lower (P=0·023) and its mean velocity was higher (P=0·005). However, no significant associations were observed in individual dogs when the measurements in both joints were taken into account.