Bondonny et al: Use of a Modified Intramedullary Pinning Technique for Distal Femoral Physeal Salter–Harris Type I and II Fracture Management
Veterinary and Comparative Orthopedics and Traumatology 2, 2024

🔍 Key Findings Summary

  • Retrospective study of 33 fractures in 31 cats with Salter–Harris I or II distal femoral fractures
  • Used 1 intramedullary Steinmann pin + 1 laterally placed antirotational pin
  • 96.9% achieved full functional outcome at mid-term follow-up
  • No implant migration or removal required
  • Minor complications: 2 seromas; Major: 3 (patellar luxation [2], osteomyelitis [1])
  • Growth plate remained open in 27.3% of cases at 6–8 weeks post-op

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Bondonny et al: Use of a Modified Intramedullary Pinning Technique for Distal Femoral Physeal Salter–Harris Type I and II Fracture Management
Veterinary and Comparative Orthopedics and Traumatology 2, 2024

🔍 Key Findings Summary

  • Retrospective study of 33 fractures in 31 cats with Salter–Harris I or II distal femoral fractures
  • Used 1 intramedullary Steinmann pin + 1 laterally placed antirotational pin
  • 96.9% achieved full functional outcome at mid-term follow-up
  • No implant migration or removal required
  • Minor complications: 2 seromas; Major: 3 (patellar luxation [2], osteomyelitis [1])
  • Growth plate remained open in 27.3% of cases at 6–8 weeks post-op

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Multiple Choice Questions on this study

In Bondonny 2024 et al., what factor contributed to a case of medial patellar luxation at follow-up?

A. Obesity
B. Use of retrograde pinning technique
C. Shortened antirotational pin
D. Late implant migration
E. Premature asymmetric growth plate closure

Answer: Premature asymmetric growth plate closure

Explanation: Medial patellar luxation was linked to angular deformity and early closure of growth plate:contentReference[oaicite:2]{index=2}
In Bondonny 2024 et al., which complication was NOT reported following the surgical technique?

A. Seroma
B. Patellar luxation
C. Osteomyelitis
D. Implant migration
E. Intermittent lameness

Answer: Implant migration

Explanation: No implant migration or removal occurred in any of the 33 fractures:contentReference[oaicite:1]{index=1}
In Bondonny 2024 et al., how did the growth plate appear on radiographs at 6–8 weeks in most cases?

A. Closed in all cases
B. Open in 72.3% of cases
C. Closed in 72.3% of cases
D. Open in 50% of cases
E. Unchanged from baseline

Answer: Closed in 72.3% of cases

Explanation: The physis appeared closed at 6–8 weeks post-op in 72.3% of follow-up radiographs:contentReference[oaicite:4]{index=4}
In Bondonny 2024 et al., which of the following statements is TRUE about antirotational pin placement?

A. It was placed medially
B. It exited through the trochlear groove
C. It crossed only the distal fragment
D. It was always 2 mm in diameter
E. It crossed the intramedullary pin proximal to the fracture

Answer: It crossed the intramedullary pin proximal to the fracture

Explanation: Correct antirotational pin placement required crossing the IM pin proximal to the fracture line:contentReference[oaicite:3]{index=3}
In Bondonny 2024 et al., what was the mid-term functional outcome rate after using the modified IM pin technique?

A. 87.9%
B. 91.0%
C. 96.9%
D. 98.5%
E. 100%

Answer: 96.9%

Explanation: Mid-term full functional outcome was achieved in 96.9% of cats (32/33 fractures):contentReference[oaicite:0]{index=0}

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