Your Custom Quiz

In Scheuermann 2023 et al., on MIPO with 3D-printed bone models, what was the main advantage of using the fracture reduction system (FRS) compared to intramedullary pin (IMP) reduction?

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Correct. FRS procedures required significantly fewer fluoroscopic images (median 7 vs. 26, *P = .001*).
Incorrect. The correct answer is Reduced intraoperative fluoroscopy use.
FRS procedures required significantly fewer fluoroscopic images (median 7 vs. 26, *P = .001*).

🔍 Key Findings

  • Precontoured plates based on 3D-printed femurs produced accurate femoral alignment (median deviations <3 mm or <3° in all planes).
  • Both fracture reduction system (FRS) and intramedullary pin (IMP) methods achieved near-anatomic alignment in cadaveric femoral fractures.
  • FRS required fewer fluoroscopic images (median 7 vs. 26, P = .001), but longer surgical time (median 43 vs. 29 min, P = .011).
  • Sagittal plane alignment: FRS led to mild increased recurvatum (median 2.9°), but still within near-anatomic limits (<5°).
  • Axial alignment: Both groups achieved near-anatomic torsion (<10°), though one IMP case had acceptable (not near-anatomic) alignment.
  • Custom drill guides and FRS improved fluoroscopy efficiency but were cumbersome and time-consuming to use. Authors do not recommend current prototype for clinical use.
  • Clinical significance: 3D printed models allow accurate precontouring, reducing intra-op plate adjustment; custom guides may reduce radiation exposure for the surgical team.

Scheuermann

Veterinary Surgery

7

2023

Minimally invasive plate osteosynthesis of femoral fractures with 3D-printed bone models and custom surgical guides: A cadaveric study in dogs

2023-7-VS-scheuermann-1

Article Title: Minimally invasive plate osteosynthesis of femoral fractures with 3D-printed bone models and custom surgical guides: A cadaveric study in dogs

Journal: Veterinary Surgery

In Kokkinos 2025 et al., on THR age effects, which perioperative complication was significantly more common in dogs <6 months of age?

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Correct. Dogs <6 months had a significantly higher incidence of dislocation than dogs >24 months of age.
Incorrect. The correct answer is Dislocation.
Dogs <6 months had a significantly higher incidence of dislocation than dogs >24 months of age.

🔍 Key Findings

  • Study population: 116 dogs underwent cementless THR; grouped by age:
    • Group A: ≤6 months (n = 27)
    • Group B: >6 to ≤12 months (n = 41)
    • Group C: >12 months (n = 48)
  • Overall perioperative complication rate: 31.9% (37/116)
    • Group A: 22.2%
    • Group B: 26.8%
    • Group C: 41.7%
  • No significant difference in total complication rate by age (p = .207), though older dogs (Group C) had numerically higher rates.
  • Luxation was significantly more common in dogs >12 months:
    • Group C: 14.6% vs. Group A (0%) and Group B (2.4%) → p = .049
  • Most common complications: luxation (9.5%) and intraoperative fissure or fracture (9.5%)
  • Time under anesthesia and surgery duration were not associated with complication risk (p = .297 and p = .781)
  • No infections or aseptic loosening observed during the 8-week follow-up.

Kokkinos

Veterinary Surgery

3

2025

The influence of age at total hip replacement on perioperative complications in dogs

2025-3-VS-kokkinos-2

Article Title: The influence of age at total hip replacement on perioperative complications in dogs

Journal: Veterinary Surgery

In Welker 2024 et al., on thoracic duct anastomosis with MAC device, what surgical consideration is recommended to improve outcomes?

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Correct. Persistent branches were suspected to impair redirection of flow and may require ligation during surgery.
Incorrect. The correct answer is Ligation of persistent thoracic duct branches.
Persistent branches were suspected to impair redirection of flow and may require ligation during surgery.

🔍 Key Findings

  • Anastomosis of the thoracic duct (TD) to the intercostal vein (ICV) using a microvascular anastomotic coupler (MAC) was feasible in all 6 healthy dogs
  • Immediate postoperative patency was confirmed in all dogs, but only 4/6 had patent anastomoses at 30 days, with 2 failing due to ICV kinking
  • Kinking of the ICV near the azygos vein insertion was the primary failure mechanism, likely from MAC malalignment
  • No intraoperative or major postoperative complications occurred, though 2 dogs developed mild seromas
  • Use of the MAC device simplified microsurgical anastomosis versus hand suturing, especially in the deep thoracic cavity
  • Contrast lymphangiography showed faster clearance from the cisterna chyli postoperatively, suggesting effective flow redirection
  • Persistent branches of the thoracic duct may impact outcomes, and should be ligated during surgery
  • This technique may be a potential novel treatment for idiopathic chylothorax, improving outcomes by reducing collateral flow stimuli

Welker

Veterinary Surgery

7

2024

Anastomosis of the caudal thoracic duct and intercostal vein using a microvascular anastomotic coupler device: Experimental study in six dogs

2024-7-VS-welker-5

Article Title: Anastomosis of the caudal thoracic duct and intercostal vein using a microvascular anastomotic coupler device: Experimental study in six dogs

Journal: Veterinary Surgery

In Viitanen 2023 et al., on zygomatic sialoadenectomy, which structure posed a risk of injury during intraoral dissection of the zygomatic salivary gland?

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Correct. Blunt dissection during IOA needed care to avoid damaging the deep facial vein.
Incorrect. The correct answer is Deep facial vein.
Blunt dissection during IOA needed care to avoid damaging the deep facial vein.

🔍 Key Findings

  • Intraoral approach (IOA) reduced surgical time compared to lateral orbitotomy (median: 42.0 vs 65.7 minutes, p = .005)
  • Ease of closure (Stage III) was better with IOA (p < .001), though gland removal (Stage II) was easier with LOA (p = .039)
  • Complete gland removal was achieved in 8/10 IOA vs 10/10 LOA cases in cadaveric study
  • All 3 clinical cases had uneventful recoveries post-IOA, including one carcinoma, with no intra- or short-term postoperative complications
  • LOA had superior surgical exposure, but was more invasive and time-consuming
  • IOA posed greater difficulty in complete gland removal in brachycephalic dogs, with remnant tissue noted in 2/10 cadavers
  • IOA avoids osteotomy, reducing potential complications like delayed union and postoperative pain
  • Cosmetic outcomes and healing were better with IOA, and no E-collar was required postoperatively

Viitanen

Veterinary Surgery

2

2023

Intraoral approach for zygomatic sialoadenectomy in dogs: An anatomical study and three clinical cases

2023-2-VS-viitanen-5

Article Title: Intraoral approach for zygomatic sialoadenectomy in dogs: An anatomical study and three clinical cases

Journal: Veterinary Surgery

In Lemmon 2025 et al., on synovitis severity scoring, what was the most common synovitis severity score observed during arthroscopy?

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Correct. Score 3/5 was the most frequently observed severity grade, present in 55.2% of joints.
Incorrect. The correct answer is 3/5.
Score 3/5 was the most frequently observed severity grade, present in 55.2% of joints.

🔍 Key Findings

Synovitis was present in 100% of canine stifles with CCL disease (n = 163).

The most frequent severity score was 3/5 (55.2%), followed by 4/5 (24.5%).

Higher synovitis scores were significantly associated with:

  • Higher median cartilage scores (p = .042, OR = 2.1 per unit increase)
  • Longer duration of clinical signs (p < .001, OR = 1.27 per month)

Bodyweight (p = .083) and sex (p = .17) were not statistically significant in multivariable analysis.

Bucket handle meniscal tears were not associated with synovitis severity.

Clinical implication: Earlier intervention may help reduce synovitis and slow OA progression.

Lemmon

Veterinary Surgery

3

2025

Arthroscopic synovitis severity scoring in canine stifles with cranial cruciate ligament disease

2025-3-VS-lemmon-1

Article Title: Arthroscopic synovitis severity scoring in canine stifles with cranial cruciate ligament disease

Journal: Veterinary Surgery

In Danielski 2025 et al., on PUO complication reduction, what was the **overall complication rate** reported with IM pin and rhBMP-2 use?

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Correct. The total complication rate was 7.4%, significantly lower than in prior studies.
Incorrect. The correct answer is 7.4%.
The total complication rate was 7.4%, significantly lower than in prior studies.

🔍 Key Findings

  • Combined intramedullary (IM) pin and rhBMP-2 use resulted in a low complication rate (7.4%) after proximal ulnar osteotomy (PUO).
  • Major complications occurred in 5.3% of cases (4 infections, 1 pin breakage with ulnar tilt requiring revision).
  • Minor complications occurred in 2.1% of cases (seroma, delayed union).
  • No cases of non-union were observed; 98.9% of limbs achieved radiographic healing by 6 weeks.
  • IM pin breakage was noted in 11.8% of limbs but did not affect healing outcomes.
  • Chondrodystrophic breeds made up 64.8% of the cohort and tolerated the procedure well.
  • Compared to prior studies, complication rates were substantially reduced with this technique (prior major: 13.9%; this study: 5.3%).
  • The use of rhBMP-2 likely enhanced early bone healing and provided biologic support, particularly important in breeds at higher risk of complications.

Danielski

Veterinary Surgery

6

2025

Impact of intramedullary pinning and recombinant human bone morphogenetic protein‐2 on postoperative complications after proximal ulnar osteotomy in dogs

2025-6-VS-danielski-2

Article Title: Impact of intramedullary pinning and recombinant human bone morphogenetic protein‐2 on postoperative complications after proximal ulnar osteotomy in dogs

Journal: Veterinary Surgery

In Grimes 2022 et al., on PDA rupture risks, what was the overall incidence of PDA rupture during surgical ligation in dogs?

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Correct. The study reported rupture in 20 of 285 dogs, corresponding to a 7.0% incidence.
Incorrect. The correct answer is 7.0%.
The study reported rupture in 20 of 285 dogs, corresponding to a 7.0% incidence.

🔍 Key Findings

  • Rupture occurred in 7.0% of dogs undergoing surgical PDA ligation (20/285).
  • Overall mortality was low (0.4%), with only one death occurring post-rupture.
  • Residual flow occurred in 9.4% of dogs; significantly more common in dogs with rupture.
  • Residual flow odds were not increased when ligation was successfully performed despite rupture.
  • No significant associations between rupture and age, weight, suture size, or dissection technique.
  • Jackson-Henderson and intrapericardial techniques were helpful in managing rupture or fibrosis.
  • Major complications (non-rupture) were rare (1.4%), including pulmonary artery ligation and cardiac arrest.
  • Surgeon preparedness (e.g., hemostatic tools, alternate techniques) was key to successful outcomes.

Grimes

Veterinary Surgery

4

2022

Surgical ligation of patent ductus arteriosus in dogs: Incidence and risk factors for rupture

2022-4-VS-grimes-1

Article Title: Surgical ligation of patent ductus arteriosus in dogs: Incidence and risk factors for rupture

Journal: Veterinary Surgery

In Mullen 2024 et al., on NIRF for GDV, what intraoperative variable was significantly different between viable and nonviable groups?

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Correct. Nonviable dogs had significantly higher pre-op lactate (8.55 vs 4.89 mmol/L, p=0.03).
Incorrect. The correct answer is Preoperative lactate.
Nonviable dogs had significantly higher pre-op lactate (8.55 vs 4.89 mmol/L, p=0.03).

🔍 Key Findings

  • NIRF altered surgical strategy in 3 of 20 GDV dogs, identifying necrosis not appreciated subjectively.
  • Fundic fluorescence <10% indicated histologically confirmed gastric necrosis.
  • In 1 dog, NIRF revealed nonviability despite the surgeon’s impression of viability.
  • Staple line fluorescence resembled viable tissue in the only stapled gastrectomy, suggesting preservation of perfusion.
  • GDV dogs (even “viable”) showed lower fluorescence vs. healthy controls, indicating subclinical vascular compromise.
  • Histology confirmed full-thickness necrosis in all 4 dogs with NIRF-defined nonviability.
  • Pre-op lactate was significantly higher in nonviable GDV dogs (8.55 vs 4.89 mmol/L, p=0.03).
  • No complications were reported from ICG use; imaging was safe and repeatable.

Mullen

Veterinary Surgery

4

2024

Use of real-time near-infrared fluorescence to assess gastric viability in dogs with gastric dilatation volvulus: A case-control study

2024-4-VS-mullen-5

Article Title: Use of real-time near-infrared fluorescence to assess gastric viability in dogs with gastric dilatation volvulus: A case-control study

Journal: Veterinary Surgery

In Marturello 2023 et al., on 3D-printed humeral models, which factor had the **greatest influence** on model accuracy?

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Correct. Bone size was found to have the most significant impact on 3D model accuracy compared to printer type.
Incorrect. The correct answer is Bone size.
Bone size was found to have the most significant impact on 3D model accuracy compared to printer type.

🔍 Key Findings

  • 3D-printed models using desktop printers (FDM, LFS) showed submillimetric accuracy, comparable to or better than industrial-grade PJP printers.
  • Bone size had a greater effect on print accuracy than printer type, especially in proximal humerus regions.
  • The humeral condyle region showed the greatest model accuracy, with mean differences under 0.5 mm, regardless of printer.
  • Models tended to be slightly smaller than cadaveric bones, potentially due to systematic underestimation during printing.
  • FDM printer provided the highest accuracy at the humeral condyle in medium-sized bones (+0.09 mm).
  • LFS printer produced prints faster and more reliably than FDM, although both had comparable dimensional accuracy.
  • Statistically significant differences existed, but all were submillimetric and unlikely to impact surgical outcomes.
  • Desktop printers are suitable for surgical planning, including plate pre-contouring and patient-specific instrumentation.

Marturello

Veterinary Surgery

1

2023

Accuracy of anatomic 3‐dimensionally printed canine humeral models

2023-1-VS-marturello-1

Article Title: Accuracy of anatomic 3‐dimensionally printed canine humeral models

Journal: Veterinary Surgery

In Caldeira 2025 et al., on femoral neck fixation, how did displacement values compare among groups?

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Correct. There was no statistically significant difference in displacement between the groups
Incorrect. The correct answer is No significant difference among groups.
There was no statistically significant difference in displacement between the groups

🔍 Key Findings

Design: In vitro study on cadaveric femurs (n=21) with basilar femoral neck fractures stabilized using 2 vs 3 titanium cannulated screws.

Stiffness: Control > 3-screw > 2-screw (674 > 120 > 90 N/mm).

Yield Load: 3-screw (586 N) > 2-screw (303 N); both < intact femur (2692 N).

Displacement: No difference across groups.

Complication: 3-screw technique more demanding; higher risk of cortical perforation, especially with narrow femoral necks.

Failure Mode: Dislodgement of femoral head + screw shaft bending.

Conclusion: 3 screws = stronger construct than 2 screws. Clinical implications need further study.

Caldeira

Veterinary and Comparative Orthopedics and Traumatology

1

2025

In Vitro Biomechanical Study of Femoral Neck Fracture Fixation with Two or Three Cannulated Screws in Dogs

2025-1-VC-Caldeira-5

Article Title: In Vitro Biomechanical Study of Femoral Neck Fracture Fixation with Two or Three Cannulated Screws in Dogs

Journal: Veterinary and Comparative Orthopedics and Traumatology

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