
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?
🔍 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
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
In Cheon 2025 et al., on guide accuracy in DFO, which of the following was a limitation of the universal guide?
🔍 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.
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
In Miller 2024 et al., on SOP-LC mechanical testing, which configuration improved initial torsional stiffness?
🔍 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
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
In Trefny 2025 et al., on plate length and stiffness, what was the measured effect of plate length on plate strain?
🔍 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.
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
In Trefny 2025 et al., on locking plate biomechanics, what effect did transcortical contact have on long working length constructs?
🔍 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.
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
In Buote 2023 et al., on laparoscopic vertical sleeve gastrectomy (LVSG), on LVSG, which device was primarily used for stomach transection?
🔍 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.
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
In Folk 2025 et al., on vessel sealing device reuse, how many devices had visible biologic debris after ethylene oxide sterilization?
🔍 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)
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
In Trefny 2025 et al., on locking plate biomechanics, when did transcortical contact occur in long working length constructs?
🔍 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.
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
In Bergen 2024 et al., on biliary stent use, what material was used for most BEMBS?
🔍 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
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
In Buote 2023 et al., on laparoscopic gastrectomy in cats, which staple type was ultimately used for live feline surgeries?
🔍 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.
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
Quiz Results
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Key Findings
