Effects of Unbalanced and Balanced Applied Loads on Norbergs Angle in Ventrodorsal Hip-Extended Radiographies

Yıl 2020, , 426 - 432, 31.12.2020

Mustafa Volkan Yaprakçı , Marek Galanty

https://doi.org/10.30607/kvj.733666

Öz

Two radiographic distraction techniques (Standard Ventrodorsal Hip-Extended Radiography, SHER, and Balanced Hip-Extended Radiography, BHER) were evaluated for Canine Hip Dysplasia (CHD) diagnosis on 100 hip joints of 50 dogs to determine the most reliable method in the detection of higher hip laxity employing Norbergs-Olsson angle (NoA) evaluation (FCI hip scoring). Anesthesia was standardized due to uniformity in muscle relaxation and applied to extend loads (SHERKg and BHERKg) were measured on hind legs using electronic weight scales (EWS) simultaneously with ventrodorsal (V/D) radiography. Results of NoA scores were evaluated statistically together with weight scale (WS) values. Significant differences were found between groups of methods for both in WS results (p<.001) and NoA evaluations (p<.001). The difference between right and left sides in WS results was not found significant (p>.05). Even if there was no significant difference occurred in this, balancing the loads with the BHER method caused a significant difference in NoA values between tested methods (p<.001). Moreover, the linear, positive, and strong correlation between SHER and BHER methods was shown the reliability of the BHER method in NoA evaluations (rs= .910, p<.001). In conclusion, by having a positive and strong correlation with the standard method, and better outcomes in FCI hip scoring with lower misdiagnose frequency thus affecting the clinical outcome, the BHER method was offered as a reliable method in the diagnosis of CHD.

Anahtar Kelimeler

canine hip dysplasia, norberg’s angle, balanced hip extended, ventrodorsal hip extended, radiography

Dengelenmış ve Dengesiz Gerilim Kuvvetlerinin Köpeklerde Ventro-Dorsal Kalça Görüntülenmesinde Norbergs Açısı Üzerine Etkileri

Öz

İki radyografik distraksiyon tekniği (Standart, SHER ve Dengelenmiş Radyografi, BHER) köpek kalça displazisinin değerlendirilmesinde 50 köpeğin 100 kalça ekleminde değerlendirildi ve sonuçlar Norberg-Olsson (NoA) açı derecesi temelinde ele alındı (FCI skorlama). Anestezik yöntem kas gevşemesi yönünden standardize uygulandı. Arka ayaklara uygulanan çekme kuvvetleri (SHERKg ve BHERKg) radyografiler sırasında elektronik yük ölçer (WS) alet vasıtası ile ölçüldü. NoA ölçüm sonuçları yük ölçer sonuçları birlikte istatistiksel yönden değerlendirildi. NoA açısı (p<.001) ve WS sonuçlarında gruplar arasında istatistiksel yönden anlamlı sonuçlar belirlendi. WS sonuçlarında sağ ve sol ayak tarafları arasında fark belirlenmedi (p>.05). BHER metodunda kullanılan dengeleyici çekme kuvveti sonucunda NoA ölçümlerinde anlamlı farklılık oluştuğu görüldü (p<.001). SHER ve BHER metodları arasında istatistiksel yönden lineer, pozitif ve güçlü bir korrelasyon bulunması BHER metodunun güvenilirliği yönünde değerlendirildi (rs= .910, p<.001). Karar aşamasında; uygulanan BHER metodunun FCI skorlaması yönünden daha az yanlış tanı bulgusu göstermesi neticesinde klinik aşamada köpek kalça displazisinin belirlenmesinde güvenilir bir metod olduğu ve meslektaşlarımıza önerilebileceği sonucuna varıldı. 

Anahtar Kelimeler

köpek kalça displazisi, norbergs açısı, dengelenmiş kalça gerdirme, ventrodorsal kalça gerdirme, radyografi

Kaynakça

• Farese JP, Todhunter RJ, Lust G, Williams AJ, Dykes NL. Dorsolateral subluxation of hip joints in dogs measured in a weight-bearing position with radiography and computed tomography. Vet Surg. 1998;27(5):393-405.
• Smith GK, Gregor TP, Rhodes WH, Biery DN. Coxofemoral joint laxity from distraction radiography and its contemporaneous and prospective correlation with laxity, subjective score, and evidence of degenerative joint disease from conventional hip-extended radiography in dogs. Am J Vet Res. 1993;54(7):1021-42.
• Thompson R, Roe SC, Robertson ID. Effects of pelvic positioning and simulated dorsal acetabular rim remodeling on the radiographic shape of the dorsal acetabular edge. Vet Radiol Ultrasound. 2007;48(1):8-13.
• Adams WM, Dueland RT, Meinen J, O'Brien RT, Giuliano E, Nordheim EV. Early detection of canine hip dysplasia: comparison of two palpation and five radiographic methods. J Am Anim Hosp Assoc. 1998;34(4):339-47.
• Meomartino L, Fatone G, Potena A, Brunetti A. Morphometric assessment of the canine hip joint using the dorsal acetabular rim view and the centre-edge angle. J Small Anim Pract. 2002;43(1):2-6.
• Ohlerth S, Busato A, Rauch M, Weber U, Lang J. Comparison of three distraction methods and conventional radiography for early diagnosis of canine hip dysplasia. J Small Anim Pract. 2003;44(12):524-9.
• Verhoeven G, Coopman F, Duchateau L, Saunders JH, van Rijssen B, van Bree H. Interobserver agreement in the diagnosis of canine hip dysplasia using the standard ventrodorsal hip-extended radiographic method. J Small Anim Pract. 2007;48(7):387-93.
• Culp WT, Kapatkin AS, Gregor TP, Powers MY, McKelvie PJ, Smith GK. 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(5):453-9.
• Corfield GS, Read RA, Eastley KA, Richardson JL, Robertson ID, Day R. Assessment of the hip reduction angle for predicting osteoarthritis of the hip in the Labrador Retriever. Aust Vet J. 2007;85(6):212-6.
• Reagan JK. Canine Hip Dysplasia Screening Within the United States: Pennsylvania Hip Improvement Program and Orthopedic Foundation for Animals Hip/Elbow Database. Veterinary Clinics of North America: Small Animal Practice.
• Dueland RT, Adams WM, Fialkowski JP, Patricelli AJ, Mathews KG, Nordheim EV. Effects of pubic symphysiodesis in dysplastic puppies. Vet Surg. 2001;30(3):201-17.
• Risler A, Klauer JM, Keuler NS, Adams WM. Puppy line, metaphyseal sclerosis, and caudolateral curvilinear and circumferential femoral head osteophytes in early detection of canine hip dysplasia. Vet Radiol Ultrasound. 2009;50(2):157-66.
• Yaprakci MV, Tekerlİ M. Köpeklerde kalça displazisine yol açan kalıtsal ve çevresel faktörler üzerine bir derleme.
• Genevois JP, Remy D, Viguier E, Carozzo C, Collard F, Cachon T, et al. Prevalence of hip dysplasia according to official radiographic screening, among 31 breeds of dogs in France. Vet Comp Orthop Traumatol. 2008;21(1):21-4.
• Genevois JP, Cachon T, Fau D, Carozzo C, Viguier E, Collard F, et al. Canine hip dysplasia radiographic screening. Prevalence of rotation of the pelvis along its length axis in 7,012 conventional hip extended radiographs. Vet Comp Orthop Traumatol. 2007;20(4):296-8.
• Genevois JP, Chanoit G, Carozzo C, Remy D, Fau D, Viguier E. Influence of anaesthesia on canine hip dysplasia score. J Vet Med A Physiol Pathol Clin Med. 2006;53(8):415-7.
• Gaspar AR, Hayes G, Ginja C, Ginja MM, Todhunter RJ. The Norberg angle is not an accurate predictor of canine hip conformation based on the distraction index and the dorsolateral subluxation score. Preventive Veterinary Medicine. 2016;135:47-52.
• Henry GA. Radiographic development of canine hip dysplasia. Vet Clin North Am Small Anim Pract. 1992;22(3):559-78.
• Todhunter RJ, Bertram JE, Smith S, Farese JP, Williams AJ, Manocchia A, et al. Effect of dorsal hip loading, sedation, and general anesthesia on the dorsolateral subluxation score in dogs. Vet Surg. 2003;32(3):196-205.
• Verhoeven GE, Coopman F, Duchateau L, Bosmans T, Van Ryssen B, Van Bree H. 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(3):259-63.
• Manley PA, Adams WM, Danielson KC, Dueland RT, Linn KA. Long-term outcome of juvenile pubic symphysiodesis and triple pelvic osteotomy in dogs with hip dysplasia. J Am Vet Med Assoc. 2007;230(2):206-10.