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An Urban Experience
observers. In the next two steps, the DI measurements from the individual observers and the PennHIP evaluation center were compared to the laxity index (LI) measured on the VMBDD view. The results were similar in every comparison: no evidence for bias, a linear relationship and a small variability. Based on these comparisons, it was concluded that the LI (VMBDD) is similar to the DI (PennHIP). Finally, the interobserver agreement of the DI, LI and NA was assessed and compared to classi cation criteria. For the NA, the measurement variability was substantial, consequently a clear measurement protocol is necessary. The DI and LI were equally reproducible and scored much better. Overall, the VMBDD seems a promising alternative for a complete and correct in-house evaluation of the hip.
To conclude, it’s time to change our approach. The methods based on the detection/quanti cation of hip joint laxity have demonstrated their superiority compared to the StVD projection and should be used as well in clinical patients as in screening programs. PennHIP offers a strong scienti c basis but the constraints related to
its use prevent a more extended use, mainly in Europe. Alternative techniques, such as the VMBDD, that allow
a complete and correct in-house evaluation of the hip joint by trained clinicians might increase the popularity of laxity-based radiographic techniques.
References
Broeckx BJ, Verhoeven G, Coopman F, et al. The effects of positioning, reason for screening and the referring veterinarian on prevalence estimates of canine hip dysplasia. Vet J 2014;201:378-384.
Coopman F, Verhoeven G, Saunders J, et al: Prevalence of hip dysplasia, elbow dysplasia and humeral head osteochondrosis in dog breeds in Belgium. Vet Rec 2008;163:654–658.
Culp WT, Kapatkin AS, Gregor TP, et al: Evaluation of the Norberg angle threshold: a comparison of Norberg angle and distraction index as measures of coxofemoral degenerative joint disease susceptibility in seven breeds of dogs. Vet Surg 2006;35:453–459.
Farese JP, Todhunter RJ, Lust G, et al: Dorsolateral subluxation of hip joints measured in a weight-bearing position with radiography and computed tomography in dogs. Vet Surg 1998;27:393–405.
Flückiger MA, Friedrich GA, Binder H. A radiographic stress technique for evaluation of coxofemora joint laxity in dogs. 1999;28:1-9.
Fortrie RR, Verhoeven G, Broeckx B, et al. Intra- and interobserver agreement on radiographic phenotype in the diagnosis of canine hip dysplasia. Vet Surg 2015;44:467-473.
Geissbühler U, Drazovic S, Lang J, et al. Inter-rater agreement in radiographic canine hip dysplasia. Vet Rec 2017;180:357 - doi: 10.1136/vr.104053.
Lust G, Todhunter RJ, Erb HN, et al: Repeatability of dorsolateral subluxation scores in dogs and correlation with macroscopic appearance of hip osteoarthritis. Am J Vet Res 2001;62:1711–1715.
Smith GK, Biery DN, Gregor TP. New concepts of coxofemoral joint stability and the development of a clinical stress-radiographic method for quantitating hip-joint laxity in the dog. J Am Vet Med Assoc 1990;196:59-70.
Smith GK, Popovitch CA, Gregor TP, et al: Evaluation of risk factors for degenerative joint disease associated with hip dysplasia in dogs. J Am Vet Med Assoc 1995;206:642–647.
Smith GK: Advances in diagnosing canine hip dysplasia. J Vet Med Assoc 1997;210:1451–1457.
Verhoeven G, Coopman F, Duchateau L, et al: Interobserver agreement on the assessability of standard ventrodorsal hip extended radiographs and its effect on agreement in the diagnosis of canine hip dysplasia and on routine FCI- scoring. Vet Radiol Ultrasound 2009;50:259–263.
Vezzoni A, Dravelli G, Vezzoni L, et al. Comparison of conservative management and juvenile pubic symphysiodesis in the early treatment of canine hip dysplasia. Vet Comp Orthop Traumatology 2008;21,267–279.
42ND WORLD SMALL ANIMAL VETERINARY ASSOCIATION CONGRESS AND FECAVA 23RD EUROCONGRESS


































































































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