The Use of Sixty Degree Rotation of the Acetabulum for Treatment of Dogs With Canine Hip Dysplasia. A Short Case Series

Abstract

Triple pelvic osteotomy (TPO) is a prophylactic surgical procedure performed on dogs with canine hip dysplasia. The procedure is indicated in skeletally immature dogs without secondary osteoarthritis (OA). It has been suggested that 60° of rotation is excessive and is associated with poor outcome. The objective of the study was to assess the medium term outcome in dogs having undergone triple pelvic osteotomy (TPO) using 60° dedicated plates. Nine TPOs were performed in seven dogs with hip dysplasia. Eight of nine hips had 72–100% osseous union at the time of revisit. The mean time to final radiographic recheck was 200 days (range, 185–229 days). The mean time to follow-up was 11.5 months (range 11–12 months). All 7 dogs had regained full function and did not require supplemental analgesia. Pelvic canal narrowing was noted in the two dogs with bilateral surgeries, but no clinical consequences were noted according to owner's statement.If more than 40 degrees reduction angles at Ortolani test, 60° of rotation of the acetabulum can be used successfully in dogs with hip dysplasia. At the time of mid-term follow-up, all dogs in this case series had full function.

Pelvic osteotomy techniques in the management of canine hip dysplasia – evolution of the treatment paradigm

“…In another study, 12.5 and 20 degree angled plates were compared and showed sufficient FHC in both variants, with a significantly decreasing occurrence of excessive FHC in the 12.5 degree group (16). Some authors, however, have used 60 degree angled plates as an alternative to total hip replacement (THR) and observed a subjective clinical improvement (10). In September 2006, at the 13 th ESVOT Congress in Munich (Germany), P. H. Haudiquet and J. F. Guillon presented an in vitro study in which the performance of an osteotomy of the iliac and pubic bones, but omitting the ischium, resulted in a significant ventral acetabular flexion with a lateral rotation of the ilium and pubis, and a deformity of the ischium called a double pelvic osteotomy (DPO).…”

Early hip laxity screening and later canine hip dysplasia development

“…The passive hip laxity (PHL) is the main risk factor for HD, comes early, and leads to subluxation of the femoral head, incongruity of the joint, and subsequent flattening of the acetabulum [2,4]. The pathogenic process involves an abnormal progression of endochondral ossification, followed by an inflammatory response leading to secondary degenerative joint disease, manifesting as restricted joint mobility, pain, lameness, and may justify different types of treatment or even euthanasia [2][3][4][5][6]. The predisposition for HD is assessed on distraction radiographs in dogs older than 16 weeks of age, measuring the distraction index (DI) [7,8] or on the standard radiographic ventrodorsal hip extended (VDHE) using signs of joint congruency and degenerative joint disease as the main references [9].…”