Treatment of canine hip dysplasia using triple pelvic osteotomy

Abstract

In this study, triple pelvic osteotomy (TPO) was carried out in a total of 22 dysplastic dogs, of which 9 were treated bilaterally and 13 unilaterally, and the position of the acetabulum was changed in a total of 31 hip joints using a special plate. It was established that, of the treated hip joints, 16 had severe, 12 medium and 3 mild dysplasia, the Norberg angle was between 70–92° and that the covering rate of the acetabulum over the femoral head changed between 5–42°. In the radiographs taken immediately after the operation, the covering rate of the acetabulum over the femoral head was determined to be very good in 25 hip joints (75% and over) and good in 6 joints (60–75%). In 5 cases, some of the screws holding the plate in place were seen to loosen in radiographs. However, this did not have any effect on the angle given to the acetabulum. In radiographs obtained 6–48 months later, degenerative joint disease was not encountered in 29 cases, with the exception of 2 cases. It was concluded that hip dysplasia, which is a hereditary disease, can be treated reasonably successfully in young dogs with TPO carried out before degenerative changes begin to occur in the joint.

Clinical, Radiological and Computed Tomographic Evaluations of the Effect of Triple Pelvic Osteotomy for Treatment of Canine Hip Dysplasia

“…In symmetrical ventro-dorsal (VD) radiographs, joints have a Norberg angle over 105 and those with more than 50% of the femoral head inside the acetabulum are considered to be normal 19 . A definite post-operative increase in both the Norberg angle and the femoral head portion that fits in the acetabulum is reported for dogs undergoing TPO surgery 12,20 . In this study, the postoperatively measured Norberg angles (P<0.01) and acetabular anteversion angles (P<0.05) were significantly higher and distance between caput femoris and acetabulum was significantly lower (P<0.05) than preoperatively measurements.…”

“…While several methods are known for the surgical treatment of hip dysplasia, TPO appears to be increasingly used in the last years [11][12][13][14] . In order to obtain desired results with TPO, patient should be young and free from degenerative changes of the hip joint, or at the very least with only a minimal level of such changes 11,12 .…”

“…In order to obtain desired results with TPO, patient should be young and free from degenerative changes of the hip joint, or at the very least with only a minimal level of such changes 11,12 . All dogs in this study had no clinical and radiological finding related with hip joints at the beginning of the study.…”

“…Complications reported for TPO surgery include diarrhea, bloody feces, hematuria, incision discharge, scrotal swelling and sciatic nerve paralysis 6,12,22 . Altunatmaz et al 12 reported that paralysis of sciatic nerve was observed in 3 cases and a collection occurred at the ischii osteotomy In 1 case of 22 cases.…”

“…Altunatmaz et al 12 reported that paralysis of sciatic nerve was observed in 3 cases and a collection occurred at the ischii osteotomy In 1 case of 22 cases. The wounds presented no further complications after having been reopened, cleaned and sutured again.…”