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Petazzoni et al: Clinical outcomes of double pelvic osteotomies in eight dogs with hip dysplasia aged 10–28 months
Veterinary Surgery 2, 2022

🔍 Key Findings

  • DPO improved joint congruity and clinical signs in dogs ≥10 months old with minimal osteoarthritis.
  • Median Norberg angle increased by 21.8% 1 year postoperatively (from 87° to 106°; p < .01).
  • Femoral head coverage increased significantly, with PC rising 66.7% and LHC by 162.5% at 1 year (p < .01).
  • No significant change in pelvic canal width postoperatively, suggesting pelvic conformation was preserved.
  • All ilial osteotomies healed with complete osseous bridging by 8 weeks; 7/11 pubic osteotomies achieved full healing.
  • No intraoperative or postoperative complications were reported, including implant failure.
  • Locking plates and additional ventral plating were used in select cases and may have contributed to implant stability.
  • DPO may be extended to older dogs with suitable hip morphology and minimal OA, expanding traditional age criteria.

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← Articles

Petazzoni et al: Clinical outcomes of double pelvic osteotomies in eight dogs with hip dysplasia aged 10–28 months
Veterinary Surgery 2, 2022

🔍 Key Findings

  • DPO improved joint congruity and clinical signs in dogs ≥10 months old with minimal osteoarthritis.
  • Median Norberg angle increased by 21.8% 1 year postoperatively (from 87° to 106°; p < .01).
  • Femoral head coverage increased significantly, with PC rising 66.7% and LHC by 162.5% at 1 year (p < .01).
  • No significant change in pelvic canal width postoperatively, suggesting pelvic conformation was preserved.
  • All ilial osteotomies healed with complete osseous bridging by 8 weeks; 7/11 pubic osteotomies achieved full healing.
  • No intraoperative or postoperative complications were reported, including implant failure.
  • Locking plates and additional ventral plating were used in select cases and may have contributed to implant stability.
  • DPO may be extended to older dogs with suitable hip morphology and minimal OA, expanding traditional age criteria.

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Multiple Choice Questions on this study

In Petazzoni 2022 et al., on DPO in older dogs, what was the most notable change in femoral head coverage after surgery?

A. No change in LHC
B. Decrease in PC
C. PC increased by 30%
D. PC increased by 66.7%
E. LHC increased by 50%

Answer: PC increased by 66.7%

Explanation: Percentage of femoral head coverage increased significantly at 1 year post-op.
In Petazzoni 2022 et al., on DPO in older dogs, what was the most significant improvement in radiographic hip assessment 1 year after surgery?

A. Increased pelvic canal width
B. Improved Norberg angle
C. Decreased distraction index
D. Decreased dorsal acetabular rim angle
E. Reduced osteophyte size

Answer: Improved Norberg angle

Explanation: Median Norberg angle increased by 21.8%, indicating improved hip congruity.
In Petazzoni 2022 et al., on DPO in older dogs, what was the primary clinical outcome 8 weeks postoperatively?

A. All dogs returned to full athletic activity
B. Dogs had mild residual lameness
C. All dogs showed complete implant failure
D. No lameness and no pain on hip extension
E. All dogs required surgical revision

Answer: No lameness and no pain on hip extension

Explanation: All dogs showed resolution of pain and lameness by 8 weeks.
In Petazzoni 2022 et al., on DPO in older dogs, which factor likely contributed to the absence of implant failure?

A. Use of intraoperative fluoroscopy
B. Use of locking plates and ventral plating
C. Minimized acetabular rotation
D. Smaller dogs only were included
E. Younger patient age

Answer: Use of locking plates and ventral plating

Explanation: Locking plates and extra ventral plates likely provided better fixation in mature dogs.
In Petazzoni 2022 et al., on DPO in older dogs, what was the selection criterion for minimal osteoarthritis?

A. Pelvic width < 11cm
B. Distraction index < 0.4
C. Osteophytes ≤2 mm
D. Cartilage score <3
E. Edge angle <12°

Answer: Osteophytes ≤2 mm

Explanation: Radiographic inclusion required ≤2 mm osteophytes.

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