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Lederer et al: Retrospective comparison of minimally invasive plate osteosynthesis and open reduction and plate stabilization of antebrachial fractures in 105 dogs (2017–2022)
Veterinary Surgery 4, 2025

🔍 Key Findings

Study size: 105 dogs (73 ORPS; 32 MIPO)

MIPO vs ORPS differences:

  • Surgical time: MIPO median 130 min vs ORPS 85 min (p < .001)
  • Explant rate: MIPO 25% vs ORPS 4.1% (p = .003)
  • Time to clinical union: MIPO 85 days vs ORPS 57 days (p = .010)
  • Frontal alignment deviation: MIPO 3.5° vs ORPS 2.0° (p = .047)
  • Comminution more frequent in MIPO (41% vs 16%; p = .012)

Significant predictors for MIPO use: More proximal fracture margin (p = .004), surgeon identity (p < .001)

No significant difference: Sagittal alignment, radial length, union rate, or complication rate by surgeon

Implant preference: Fixin plates used in 84% of MIPO; locking plates more common in ORPS

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← Articles

Lederer et al: Retrospective comparison of minimally invasive plate osteosynthesis and open reduction and plate stabilization of antebrachial fractures in 105 dogs (2017–2022)
Veterinary Surgery 4, 2025

🔍 Key Findings

Study size: 105 dogs (73 ORPS; 32 MIPO)

MIPO vs ORPS differences:

  • Surgical time: MIPO median 130 min vs ORPS 85 min (p < .001)
  • Explant rate: MIPO 25% vs ORPS 4.1% (p = .003)
  • Time to clinical union: MIPO 85 days vs ORPS 57 days (p = .010)
  • Frontal alignment deviation: MIPO 3.5° vs ORPS 2.0° (p = .047)
  • Comminution more frequent in MIPO (41% vs 16%; p = .012)

Significant predictors for MIPO use: More proximal fracture margin (p = .004), surgeon identity (p < .001)

No significant difference: Sagittal alignment, radial length, union rate, or complication rate by surgeon

Implant preference: Fixin plates used in 84% of MIPO; locking plates more common in ORPS

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Multiple Choice Questions on this study

In Lederer 2025 et al., on MIPO vs ORPS, which surgeon-related variable significantly influenced fixation technique choice?

A. Years in practice
B. Time of day of surgery
C. Use of fluoroscopy
D. Attending surgeon identity
E. Implant manufacturer

Answer: Attending surgeon identity

Explanation: Choice of MIPO vs ORPS was significantly influenced by attending surgeon (p < .001).
In Lederer 2025 et al., on MIPO vs ORPS, what was the median surgical time difference between the techniques?

A. 45 minutes longer for MIPO
B. 15 minutes longer for MIPO
C. Equal for both
D. 45 minutes shorter for MIPO
E. 85 minutes shorter for MIPO

Answer: 45 minutes longer for MIPO

Explanation: MIPO had a median surgical time of 130 min vs 85 min for ORPS (p < .001).
In Lederer 2025 et al., on MIPO vs ORPS, what factor was significantly associated with explantation?

A. Younger age
B. Proximal fracture location
C. Circular fixator use
D. Comminution of fracture
E. Surgeon experience

Answer: Comminution of fracture

Explanation: Fracture comminution was significantly associated with implant explantation (p < .001).
In Lederer 2025 et al., on MIPO vs ORPS, which fracture type was more common in dogs treated with MIPO?

A. Transverse fractures
B. Short oblique fractures
C. Comminuted fractures
D. Pathologic fractures
E. Articular fractures

Answer: Comminuted fractures

Explanation: MIPO was used in 41% of comminuted fractures vs 16% in ORPS (p = .012).
In Lederer 2025 et al., on MIPO vs ORPS, which outcome measure significantly differed between groups?

A. Sagittal plane alignment
B. Radial length
C. Time to clinical union
D. Postoperative infection rate
E. Number of screws used

Answer: Time to clinical union

Explanation: Time to clinical union was significantly longer in MIPO (85 days) vs ORPS (57 days), p = .010.

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