Quiz Question

In Muroi 2024 et al., on radius plate stress effects, what FEA result was consistent in both LP 1 mm and 3 mm groups?

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Correct. Maximum principal stress decreased significantly at cranial cortex in both LP groups.
Incorrect. The correct answer is Reduced tensile stress on cranial aspect.
Maximum principal stress decreased significantly at cranial cortex in both LP groups.

🔍 Key Findings Summary

  • Finite element analysis compared intact radii vs. locking plates placed 1 mm or 3 mm above the bone
  • LP placement significantly reduced tensile (maximum principal) stress on cranial cortex, potentially causing implant-induced osteoporosis
  • Shell element findings:
    • Max principal stress significantly lower in both LP groups vs. intact (p < 0.05)
  • Solid element findings:
    • Equivalent stress higher and max principal stress lower in LP groups
  • Implication: Tension reduction may impair bone remodeling; implant design and placement height affect stress environment

Muroi

Veterinary and Comparative Orthopedics and Traumatology

3

2024

Stress Changes in the Canine Radius after Locking Plate Fixation Using Finite Element Analysis

2024-3-VCOT-muroi-4

Article Title: Stress Changes in the Canine Radius after Locking Plate Fixation Using Finite Element Analysis

Journal: Veterinary and Comparative Orthopedics and Traumatology

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In Cheon 2025 et al., on guide accuracy in DFO, which of the following was a limitation of the universal guide?

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Correct. The universal guide struggled with fit in small dogs due to its one-size design.
Incorrect. The correct answer is Single-size design may not suit all dogs.
The universal guide struggled with fit in small dogs due to its one-size design.

🔍 Key Findings

  • Both patient-specific and universal guides yielded correction errors <2°, with no statistically significant difference in accuracy.
  • Universal guide corrected aLDFA up to 24° and AA up to 20°, addressing multiplanar deformities effectively.
  • Patient-specific guides allowed for preoperative simulation, providing more stable pin placement and potentially aiding less-experienced surgeons.
  • Universal guide eliminated the need for CT-based customization, reducing time and cost.
  • Cadaver and bone model trials showed consistent accuracy, validating both methods in vitro and ex vivo.
  • No significant differences in outcome when correcting uniplanar (aLDFA) vs biplanar (aLDFA + AA) deformities.
  • Universal guide's fixed size presented limitations in small dogs, potentially requiring multiple size options.
  • Universal guide showed potential for standard use, offering repeatable outcomes with minimal prep despite needing precise intraoperative placement.

Cheon

Veterinary and Comparative Orthopaedics and Traumatology

3

2025

Comparing the Accuracy of Patient-Specific Guide and Universal Guide for Distal Femoral Osteotomy in Dogs

2025-3-VCOT-cheon-4

Article Title: Comparing the Accuracy of Patient-Specific Guide and Universal Guide for Distal Femoral Osteotomy in Dogs

Journal: Veterinary and Comparative Orthopaedics and Traumatology

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In Miller 2024 et al., on SOP-LC mechanical testing, which configuration improved initial torsional stiffness?

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Correct. Alternating clamps significantly improved torsional stiffness despite lower bending strength.
Incorrect. The correct answer is Alternating clamp placement.
Alternating clamps significantly improved torsional stiffness despite lower bending strength.

🔍 Key Findings Summary

  • No significant difference in mechanical properties between contoured vs non-contoured SOP-LC rods
  • Clamp configuration significantly influenced mechanical performance:
    • Single-side clamps → ↑ yield load, ↑ displacement, ↑ bending strength (p < 0.05)
    • Alternating-side clamps → ↑ initial torsional stiffness (p = 0.029)
  • Clamp slippage was evident only in torsional tests; screw loosening may be torque-dependent
  • Mild screw bending and construct offset suggest subtle instability
  • Recommends clamp configuration choice based on loading scenario
  • Suggests 3.0 Nm torque may be more effective than 2.5 Nm to prevent clamp slippage

Miller

Veterinary and Comparative Orthopedics and Traumatology

4

2024

Mechanical Testing of Sliding on Pivot-Locking Clamp (SOP-LC) Fracture Repair System in Four-Point Bending and Torsion

2024-4-VCOT-miller-3

Article Title: Mechanical Testing of Sliding on Pivot-Locking Clamp (SOP-LC) Fracture Repair System in Four-Point Bending and Torsion

Journal: Veterinary and Comparative Orthopedics and Traumatology

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In Trefny 2025 et al., on plate length and stiffness, what was the measured effect of plate length on plate strain?

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Correct. Strain was significantly lower for 12-hole than 6-hole plates at all ROIs.
Incorrect. The correct answer is 12-hole plates had the lowest strain.
Strain was significantly lower for 12-hole than 6-hole plates at all ROIs.

🔍 Key Findings

  • 12-hole LCPs (80% plate–bone ratio) showed significantly higher construct stiffness than 6-, 8-, or 10-hole plates in both compression and tension bending.
  • Strain on the plate was significantly lower in 12-hole vs 6-hole plates at all regions of interest (ROIs), especially around the fracture gap.
  • No incremental increases in stiffness or decreases in strain were observed between 6-, 8-, and 10-hole plates—only when comparing to 12-hole plates.
  • Bone model strain adjacent to the plate end was significantly lower for 10- and 12-hole plates vs 6-hole plates under both loading conditions.
  • The threshold effect suggests biomechanical benefits only emerge beyond a plate–bone ratio of ~80%.
  • Working length increased from 9.4 mm (6-hole) to 13 mm (others), potentially influencing strain/stiffness differences.
  • Four-point bending was used, as it replicates the most biomechanically relevant force on plated long bones.
  • Clinical implication: Longer plates may reduce plate strain and peri-implant bone strain, potentially lowering risk of fatigue failure or stress risers.

Trefny

Veterinary and Comparative Orthopaedics and Traumatology

2

2025

Effect of Plate Length on Construct Stiffness and Strain in a Synthetic Short-Fragment Fracture Gap Model Stabilized with a 3.5-mm Locking Compression Plate

2025-2-VCOT-trefny-2

Article Title: Effect of Plate Length on Construct Stiffness and Strain in a Synthetic Short-Fragment Fracture Gap Model Stabilized with a 3.5-mm Locking Compression Plate

Journal: Veterinary and Comparative Orthopaedics and Traumatology

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In Trefny 2025 et al., on locking plate biomechanics, what effect did transcortical contact have on long working length constructs?

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Correct. Long working length constructs became stiffer and less strained after transcortical contact.
Incorrect. The correct answer is Decreased strain and increased stiffness.
Long working length constructs became stiffer and less strained after transcortical contact.

🔍 Key Findings

  • Short working length constructs had significantly higher stiffness and lower strain than long constructs in compression bending (p = 0.0172).
  • In tension bending, short constructs also had higher precontact stiffness and lower strain, but this reversed after transcortical contact (~150 N).
  • Transcortical contact increased stiffness only in long constructs, producing a bilinear load-displacement curve.
  • Postcontact stiffness was higher in long constructs, but this may not reflect clinical benefit due to risks of high interfragmentary strain.
  • Short working length reduced strain at multiple ROIs under both loading conditions, including over fracture gap (Tables 1–3).
  • Increased working length promoted stress concentration and deformation, especially in compression bending.
  • In vitro benefits of long constructs (via contact stability) may not translate to healing, as repetitive loading could increase plate strain and bone resorption.
  • Plate strain was effectively mapped using 3D digital image correlation, confirming regional strain differences between configurations.

Trefny

Veterinary and Comparative Orthopaedics and Traumatology

3

2025

Effect of Plate Screw Configuration on Construct Stiffness and Plate Strain in a Synthetic Short Fragment Small Gap Fracture Model Stabilized with a 12-Hole 3.5-mm Locking Compression Plate

2025-3-VCOT-trefny-3

Article Title: Effect of Plate Screw Configuration on Construct Stiffness and Plate Strain in a Synthetic Short Fragment Small Gap Fracture Model Stabilized with a 12-Hole 3.5-mm Locking Compression Plate

Journal: Veterinary and Comparative Orthopaedics and Traumatology

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In Buote 2023 et al., on laparoscopic vertical sleeve gastrectomy (LVSG), on LVSG, which device was primarily used for stomach transection?

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Correct. Endo GIA staplers with purple TriStaple cartridges were used in both live cats.
Incorrect. The correct answer is Endo GIA stapler with TriStaple cartridge.
Endo GIA staplers with purple TriStaple cartridges were used in both live cats.

🔍 Key Findings

  • LVSG was successfully performed in 9/10 cadavers and both live cats, demonstrating procedural feasibility.
  • Mean stomach resected was 27.6% of total weight in cadavers, with no leaks in 8/8 tested or either live patient.
  • Mean surgical time: 110.4 min (cadavers) and 115 min (live cats); no intra- or postoperative complications observed.
  • Stenosis near the incisura occurred in 2 cadavers; attributed to staple placement too close to the lesser curvature.
  • 3D printed cannulas (3DPCs) improved ergonomics and were used in 6/10 cadavers and both live procedures.
  • Live cats lost 21–24% body weight over 3 months, with full return to pre-surgical BCS and no GI complications.
  • Orogastric tube and proper tensioning were critical in preventing gastric stenosis during staple placement.
  • No reinforcement or oversew was used on the staple line; TriStaple cartridges provided reliable closure.

Buote

Veterinary Surgery

7

2023

Laparoscopic vertical sleeve gastrectomy in felines: A cadaveric feasibility study and experimental case series in two cats

2023-7-VS-buote2-4

Article Title: Laparoscopic vertical sleeve gastrectomy in felines: A cadaveric feasibility study and experimental case series in two cats

Journal: Veterinary Surgery

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In Folk 2025 et al., on vessel sealing device reuse, how many devices had visible biologic debris after ethylene oxide sterilization?

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Correct. All 16 devices had visible residual biologic debris after EtO sterilization, especially under the transection blade.
Incorrect. The correct answer is 16 of 16.
All 16 devices had visible residual biologic debris after EtO sterilization, especially under the transection blade.

🔍 Key Findings

40 dogs underwent splenectomy using 16 bipolar vessel sealing devices (VSDs)
Devices were reused up to 4 times after handwashing and ethylene oxide (EtO) sterilization
Biologic debris was found in 100% of devices, specifically under the transection blade, even after a single use

  • Mostly scant (14/16) or mild (2/16) debris

No devices or debris yielded positive aerobic culture after EtO sterilization
EtO sterilization proved microbiologically effective despite visible residue
Perioperative failure rate: 1 device (malfunctioned during first activation)

Folk

Veterinary Surgery

3

2025

Incidence of residual biologic debris and contamination of reused bipolar vessel sealing devices after ethylene oxide sterilization following splenectomy

2025-3-VS-folk-2

Article Title: Incidence of residual biologic debris and contamination of reused bipolar vessel sealing devices after ethylene oxide sterilization following splenectomy

Journal: Veterinary Surgery

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In Trefny 2025 et al., on locking plate biomechanics, when did transcortical contact occur in long working length constructs?

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Correct. Transcortical contact occurred in long constructs around 150–155 N in tension bending.
Incorrect. The correct answer is Between 150–155 N.
Transcortical contact occurred in long constructs around 150–155 N in tension bending.

🔍 Key Findings

  • Short working length constructs had significantly higher stiffness and lower strain than long constructs in compression bending (p = 0.0172).
  • In tension bending, short constructs also had higher precontact stiffness and lower strain, but this reversed after transcortical contact (~150 N).
  • Transcortical contact increased stiffness only in long constructs, producing a bilinear load-displacement curve.
  • Postcontact stiffness was higher in long constructs, but this may not reflect clinical benefit due to risks of high interfragmentary strain.
  • Short working length reduced strain at multiple ROIs under both loading conditions, including over fracture gap (Tables 1–3).
  • Increased working length promoted stress concentration and deformation, especially in compression bending.
  • In vitro benefits of long constructs (via contact stability) may not translate to healing, as repetitive loading could increase plate strain and bone resorption.
  • Plate strain was effectively mapped using 3D digital image correlation, confirming regional strain differences between configurations.

Trefny

Veterinary and Comparative Orthopaedics and Traumatology

3

2025

Effect of Plate Screw Configuration on Construct Stiffness and Plate Strain in a Synthetic Short Fragment Small Gap Fracture Model Stabilized with a 12-Hole 3.5-mm Locking Compression Plate

2025-3-VCOT-trefny-2

Article Title: Effect of Plate Screw Configuration on Construct Stiffness and Plate Strain in a Synthetic Short Fragment Small Gap Fracture Model Stabilized with a 12-Hole 3.5-mm Locking Compression Plate

Journal: Veterinary and Comparative Orthopaedics and Traumatology

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In Bergen 2024 et al., on biliary stent use, what material was used for most BEMBS?

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Correct. MP35N cobalt alloy was the most commonly used stent material.
Incorrect. The correct answer is MP35N cobalt alloy.
MP35N cobalt alloy was the most commonly used stent material.

🔍 Key Findings Summary

  • Subjects: 11 animals (8 dogs, 3 cats)
  • Technique: Uncovered balloon-expandable metallic biliary stents (BEMBS)
  • Indications: Cholelithiasis, strictures, neoplasia, cholangiohepatitis, etc.
  • Success: Patency achieved in all animals surviving to discharge
  • Complications:
    • Short-term mortality: 2/11 (1 euthanized for SIRS, 1 unknown)
    • Long-term issues: cholangiohepatitis, choledocholithiasis, stent occlusion (in cats only)
  • Long-term patency:
    • Dogs: median 650.5 days
    • Cats: median 446 days
  • Stent removal possible even after >600 days in some cats
  • Clinical outcome: Viable alternative to plastic stents or cholecystoenterostomy

Bergen

Veterinary Surgery

2

2024

Clinical use of uncovered balloon‐expandable metallic biliary stents for treatment of extrahepatic biliary tract obstructions in cats and dogs: 11 cases (2012–2022)

2024-2-VS-bergen-2

Article Title: Clinical use of uncovered balloon‐expandable metallic biliary stents for treatment of extrahepatic biliary tract obstructions in cats and dogs: 11 cases (2012–2022)

Journal: Veterinary Surgery

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In Buote 2023 et al., on laparoscopic gastrectomy in cats, which staple type was ultimately used for live feline surgeries?

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Correct. Purple Tri-Staple technology staples were used in live cats for graduated compression appropriate for stomach thickness.
Incorrect. The correct answer is Purple Tri-Staple cartridges.
Purple Tri-Staple technology staples were used in live cats for graduated compression appropriate for stomach thickness.

🔍 Key Findings

  • LVSG was feasible in 9/10 feline cadavers with successful stapled gastrectomy and minimal technical complications.
  • Stenosis at the incisura angularis occurred in 2/10 cadavers, associated with staple placement too close to the lesser curvature.
  • Leak testing was negative in 8 cadavers and both live cats, indicating effective staple sealing.
  • Mean stomach resection was ~28%, though less than human standards (~75–80%) for metabolic effects.
  • Surgery was performed safely in two live feline subjects, with no intraoperative or postoperative complications over a 6-month follow-up.
  • Technique refinements included orogastric tube placement and custom 3D-printed cannulas to improve staple line accuracy and avoid stenosis.
  • Tri-Staple purple cartridges provided graduated compression suited for feline gastric tissue thickness (~2.5 mm).
  • No need for staple line oversew in live cats; staple-only closure proved safe in this short-term study.

Buote

Veterinary Surgery

6

2023

Laparoscopic vertical sleeve gastrectomy in felines: A cadaveric feasibility study and experimental case series in two cats

2023-6-buote2-4

Article Title: Laparoscopic vertical sleeve gastrectomy in felines: A cadaveric feasibility study and experimental case series in two cats

Journal: Veterinary Surgery

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Topic: Material Science & Engineering Concepts
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