Your Custom Quiz

In Low 2025 et al., on machine-learning outcomes in IVDE, what was the performance of the XGBoost model when using only preoperative variables?

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Correct. The preoperative-only XGBoost model had AUC 0.8271 and accuracy 71.9%.
Incorrect. The correct answer is AUC 0.8271, Accuracy 71.9%.
The preoperative-only XGBoost model had AUC 0.8271 and accuracy 71.9%.

🔍 Key Findings

The study included 162 deep-pain-negative dogs undergoing decompressive surgery (hemilaminectomy) for acute thoracolumbar intervertebral disc extrusion (IVDE).

Ambulatory recovery occurred in 53.1% of dogs (86/162).

The best performing machine-learning model was XGBoost, with an AUC of 0.9502 and accuracy of 89.1%, outperforming Ridge, AdaBoost, and Naive Bayes models.

Preoperative-only XGBoost models were less accurate, with AUC dropping to 0.8271 and accuracy to 71.9%.

Top predictive features (by SHAP analysis) included:

  1. T2-weighted to L2 spinal cord signal ratio (lower values predicted better outcome)
  2. Use of fenestration (presence associated with better recovery)
  3. Hospitalization duration
  4. Imaging modality used
  5. Duration of nonambulatory status

Machine learning provided better insight into prognostic factors than traditional statistical methods.

Low

Veterinary Surgery

4

2025

Machine-learning-based prediction of functional recovery in deep-pain-negative dogs after decompressive thoracolumbar hemilaminectomy for acute intervertebral disc extrusion

2025-4-VS-low-5

Article Title: Machine-learning-based prediction of functional recovery in deep-pain-negative dogs after decompressive thoracolumbar hemilaminectomy for acute intervertebral disc extrusion

Journal: Veterinary Surgery

In Jeong 2025 et al., on contoured saw guide vs jig, which statement is correct regarding *osteotomy torsion*?

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Correct. Contoured guide improved torsional precision (e.g., 257 vs 2573 pixels in bone models; p < .001).
Incorrect. The correct answer is Contoured guide reduced torsion significantly in both bone models and cadavers..
Contoured guide improved torsional precision (e.g., 257 vs 2573 pixels in bone models; p < .001).

🔍 Key Findings

  • TPLO with the contoured saw guide achieved more accurate osteotomy angles for both inclination and torsion in bone models and cadaveric limbs (p < .05).
  • Medial cortical damage was significantly lower with the contoured guide (247 vs. 1866 pixels in bone models; p < .001).
  • No significant difference in eccentricity (distance between actual and intended osteotomy center) was found between groups.
  • Postoperative tibial plateau angle (TPA) was similar between groups (6.4° vs. 7.6°; p = .15), though both were slightly higher than the target of 6°.
  • Deviation in medial mechanical proximal tibial angle (mMPTA) showed no significant group difference; valgus deformity occurred in both.
  • Osteotomy and device application times were similar between the contoured guide and jig-assisted TPLO.
  • The contoured guide eliminated the need for proximal jig pin, potentially reducing intra-articular pin risk.
  • The guide's multiple pin fixation system improved stability and alignment, supporting safer osteotomy on curved tibial surfaces.

Jeong

Veterinary Surgery

7

2025

Evaluation of a contoured saw guide for tibial plateau leveling osteotomy in dogs

2025-7-VS-jeong-4

Article Title: Evaluation of a contoured saw guide for tibial plateau leveling osteotomy in dogs

Journal: Veterinary Surgery

In Sabol 2024 et al., what was the narrowest documented corridor width in thoracic vertebrae?

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Correct. Widths as small as 1.8 mm were documented in the mid-thoracic spine, highlighting surgical risk:contentReference[oaicite:0]{index=0}
Incorrect. The correct answer is 1.8 mm.
Widths as small as 1.8 mm were documented in the mid-thoracic spine, highlighting surgical risk:contentReference[oaicite:0]{index=0}

🔍 Key Findings Summary

  • Evaluated ideal dorsolateral implant trajectories in T1–T13 using CT in 30 dogs across five weight classes.
  • Corridor widths were narrowest in the mid-thoracic vertebrae (as little as 1.8 mm) and increased cranially and caudally.
  • Allowable deviation angles (ADA) were often very small (as little as ), indicating high risk for canal or thoracic structure breach.
  • Distances to critical structures (lungs, aorta, subclavian artery, azygos vein) were often <1 mm, even in large dogs.
  • Data suggest extreme caution and precision are needed for thoracic vertebral implant placement and support use of navigation or 3D-printed guides.

Sabol

Veterinary and Comparative Orthopedics and Traumatology

2

2024

Implantation Corridors in Canine Thoracic Vertebrae: A Morphometric Study in Dogs of Varying Sizes

2024-2-VCOT-sabol-1

Article Title: Implantation Corridors in Canine Thoracic Vertebrae: A Morphometric Study in Dogs of Varying Sizes

Journal: Veterinary and Comparative Orthopedics and Traumatology

In Scheuermann 2023 et al., on canine femoral MIPO, what was the most significant drawback observed with the use of the FRS?

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Correct. FRS procedures had a significantly longer surgical time than IMP (43 vs 29 minutes; P = .011).
Incorrect. The correct answer is Longer surgical time.
FRS procedures had a significantly longer surgical time than IMP (43 vs 29 minutes; P = .011).

🔍 Key Findings

  • Precontoured plates using 3D-printed femoral models achieved near-anatomic alignment in all cadaver limbs.
  • Fracture reduction system (FRS) required significantly fewer fluoroscopy images than intramedullary pin (IMP) methods (7 vs 26, P = .001).
  • Despite longer surgical time (43 vs 29 minutes, P = .011), FRS showed equally accurate or better alignment compared to IMP.
  • Femoral length, frontal, sagittal, and axial alignment were all within near-anatomic thresholds (<10 mm or <5° deviation) in both groups.
  • FRS was associated with more consistent length maintenance, with IMP showing a median shortening of 2.3 mm (P = .03).
  • Axial plane deviation was statistically different in the FRS group (P = .04), but still clinically acceptable.
  • Study highlights potential for custom 3D-printed guides to reduce radiation exposure and improve precision in MIPO procedures.
  • Authors caution that FRS was time-consuming and cumbersome, suggesting design refinements needed for clinical use.

Scheuermann

Veterinary Surgery

6

2023

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

2023-6-VS-scheuermann-2

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 Turner 2025 et al., on TPA changes after SH-1/2 fracture repair, what surgical feature may contribute to the dynamic reduction in TPA over time?

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Correct. Cranial K-wire placement may attenuate cranial physis growth, allowing caudal physis to reduce TPA over time.
Incorrect. The correct answer is Cranial placement of K-wires.
Cranial K-wire placement may attenuate cranial physis growth, allowing caudal physis to reduce TPA over time.

🔍 Key Findings

  • TPA decreased significantly from preoperative to follow-up (mean 5.89°; p < 0.001), and from immediate postoperative to follow-up (mean 2.2°; p = 0.018)
  • Use of tension band in addition to K-wires did not significantly improve TPA reduction compared to K-wires alone
  • Cranial K-wire positioning may attenuate growth at the cranial tibial physis, allowing relative caudal growth to reduce TPA over time
  • Dynamic TPA reduction may reduce risk of cranial cruciate ligament rupture even when initial TPA is high
  • Small breeds (e.g., French Bulldogs) were overrepresented; further research is needed in larger breeds with more growth potential
  • Surgical reduction is difficult, but perfect alignment may not be essential if TPA reduces postoperatively
  • Radiographic TPA measurement was reliably performed with low interobserver variability
  • K-wire removal at 3–8 weeks may facilitate continued growth in growing dogs

Turner

Veterinary and Comparative Orthopaedics and Traumatology

5

2025

Tibial Plateau Angle Changes following Repair of Salter–Harris Type 1 and 2 Fractures in Dogs

2025-5-VCOT-turner-3

Article Title: Tibial Plateau Angle Changes following Repair of Salter–Harris Type 1 and 2 Fractures in Dogs

Journal: Veterinary and Comparative Orthopaedics and Traumatology

In Banse 2022 et al., on skill retention methods, what is a key consideration when using massed instruction in veterinary surgical curricula?

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Correct. Massed instruction is acceptable if followed by supervised practice sessions to ensure performance parity.
Incorrect. The correct answer is It should be followed by structured practice.
Massed instruction is acceptable if followed by supervised practice sessions to ensure performance parity.

🔍 Key Findings

  • Spaced instruction (SI) improved immediate performance on the first learned skill compared to massed instruction (MI) in both LSU and LMU cohorts.
  • Cognitive load was higher in MI students at LMU, particularly in physical demand, effort, and frustration, while LSU showed no significant cognitive load differences.
  • Skill performance differences disappeared after 2 weeks of supervised practice, regardless of instructional format.
  • Time to complete skills improved over time, but this did not always correlate with improved checklist or global rating scores.
  • Intrinsic cognitive load increased when teaching more complex or related surgical tasks in the same session.
  • Initial skill complexity and prior exposure may influence effectiveness of spaced vs massed instruction.
  • Supervised practice sessions are critical to eliminate initial skill disparities between instructional methods.
  • Massed instruction may still be acceptable if followed by scheduled practice opportunities.

Banse

Veterinary Surgery

7

2022

Teaching veterinary surgical skills: Comparison of massed versus spaced instruction

2022-7-VS-banse-5

Article Title: Teaching veterinary surgical skills: Comparison of massed versus spaced instruction

Journal: Veterinary Surgery

In Otero Balda 2025 et al., on Short-term outcomes after feline cPSS surgery, what was the survival rate in cats pretreated with levetiracetam following the LEV1 protocol?

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Correct. Cats in LEV1 group had a 100% 30-day survival rate, although the difference was not statistically significant.
Incorrect. The correct answer is 100.0%.
Cats in LEV1 group had a 100% 30-day survival rate, although the difference was not statistically significant.

🔍 Key Findings

  • 78% of cats that developed postattenuation neurologic signs (PANS) after congenital portosystemic shunt (cPSS) surgery survived to 30 days.
  • Postattenuation seizures (PAS) were associated with significantly decreased 30-day survival (50% vs. 78%; OR: 0.015, p = .005).
  • Treatment of PANS with propofol was a negative prognostic factor (OR: 0.112, p = .0008).
  • Generalized PAS accounted for most seizure cases and were more frequently fatal than focal or unknown-type seizures.
  • Pretreatment with levetiracetam (LEV1 protocol) showed a trend toward improved survival (100% vs. 60.6% in untreated cats), though not statistically significant (p = .06).
  • Shunt morphology, method of attenuation, and study period (early vs. late) were not significantly associated with 30-day survival.
  • Electrolyte, glucose, and ammonia abnormalities were not strongly linked to survival outcomes in this study.
  • Majority of PAS-related deaths were due to uncontrolled generalized seizures or euthanasia because of severity.

Otero Balda

Veterinary Surgery

5

2025

Prognostic factors for short‐term survival of cats that experienced postattenuation neurologic signs after surgical attenuation of single congenital portosystemic shunts

2025-5-VS-otero-5

Article Title: Prognostic factors for short‐term survival of cats that experienced postattenuation neurologic signs after surgical attenuation of single congenital portosystemic shunts

Journal: Veterinary Surgery

In Scott 2023 et al., on thoracoscopic-assisted lung lobectomy, which **surgical device** was associated with **shorter median surgery time**?

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Correct. Median surgery time was shorter for procedures using linear staplers (57.5 min) compared to endoscopic staplers (80 min).
Incorrect. The correct answer is Linear stapler (DST series).
Median surgery time was shorter for procedures using linear staplers (57.5 min) compared to endoscopic staplers (80 min).

🔍 Key Findings

  • TA lung lobectomy was feasible in dogs ≥3 kg, including those with lesions up to 10 cm.
  • 12 intraoperative complications (40%) occurred, with 6 dogs (20%) converted to open thoracotomy, mainly due to adhesions or inability to isolate lobes.
  • Postoperative complications occurred in 8 dogs (27%), most were mild (63%), and only 1 death (3%) was reported.
  • Median hospitalization was 47 hours; 29/30 dogs were discharged successfully.
  • One-lung ventilation (OLV) was attempted in 7 dogs but successfully maintained in only 4.
  • Linear staplers had shorter surgery times (median 57.5 min) than endoscopic staplers (80 min).
  • Histopathology confirmed neoplasia in 77% of cases, most commonly papillary and bronchioalveolar carcinoma.
  • TA lobectomy allows MIS in smaller dogs or with large lesions, avoiding need for full thoracotomy or complex anesthesia/stapling.

Scott

Veterinary Surgery

1

2023

Complications and outcomes of thoracoscopic-assisted lung lobectomy in dogs

2023-1-VS-scott-3

Article Title: Complications and outcomes of thoracoscopic-assisted lung lobectomy in dogs

Journal: Veterinary Surgery

In Radke 2022 et al., on outcome measure validation, which of the following OROMs demonstrated the **most rigorous development process** according to COSMIN criteria?

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Correct. COI was rated as “adequate” for overall development, the highest rating among the instruments evaluated.
Incorrect. The correct answer is Canine Orthopedic Index (COI).
COI was rated as “adequate” for overall development, the highest rating among the instruments evaluated.

🔍 Key Findings

  • CBPI, COI, and LOAD are recommended for assessing canine osteoarthritis based on COSMIN criteria.
  • COI scored highest in development rigor and evidence quality among evaluated OROMs.
  • Internal consistency, reliability, and responsiveness were commonly validated, though no OROMs reported measurement error.
  • LOAD was considered formative, and internal consistency assessment was deemed unnecessary.
  • CBPI and COI showed sufficient internal consistency, but CBPI’s factor structure was inconsistent across studies.
  • All 6 evaluated OROMs (CBPI, COI, LOAD, BHSII, HCPI, HVAS) were quick to complete (under 5 min).
  • Three tools—BHSII, HCPI, HVAS—need more evidence before recommendation; only CBPI, COI, and LOAD are Category A (recommended).
  • Future studies should assess interpretability, including measurement error and clinically meaningful change scores (MIC, SDC).

Radke

Veterinary Surgery

2

2022

Evidence‐based evaluation of owner‐reported outcome measures for canine orthopedic care – a COSMIN evaluation of 6 instruments

2022-2-VS-radke-1

Article Title: Evidence‐based evaluation of owner‐reported outcome measures for canine orthopedic care – a COSMIN evaluation of 6 instruments

Journal: Veterinary Surgery

In Guénégo 2025 et al., on AMA-based CCWO, which combination was key to minimizing SSIs in AMA-based CCWO?

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Correct. Use of RJB and postop antibiotics was associated with a low SSI rate.
Incorrect. The correct answer is Robert Jones bandage and antibiotics.
Use of RJB and postop antibiotics was associated with a low SSI rate.

🔍 Key Findings

  • AMA-based CCWO realigned the anatomical and mechanical axes in 82% of dogs >50 kg, with postoperative AMA angle of 0° in most cases.
  • Surgical site infection (SSI) rate was only 0.5%, markedly lower than TPLO-reported rates in similar populations (up to 37.5%).
  • All osteotomies achieved Grade 4 healing by 8 weeks, with no implant failures.
  • AMA-based planning based on preoperative AMA and TPA allowed for better correction of proximal tibial angulation compared to TPLO in large dogs.
  • Use of a double locking plate (DLP) fixation and Robert Jones bandage (RJB) contributed to improved mechanical stability and infection prevention.
  • Dogs with AMA angle >3.4° (hyper-CCAPT) were 38% of the cohort, supporting AMA as a critical metric in planning.
  • Postoperative alignment of the AA and MA was more consistently achieved when preoperative AMA was >2.4°, confirming suitability of AMA-based CCWO for severe angulation.
  • Most infections in TPLOs occur within 15 days, but RJB plus antibiotics in this study appeared protective, suggesting benefit for early-phase SSI prevention.

Guénégo

Veterinary and Comparative Orthopaedics and Traumatology

3

2025

Modified Cranial Closing Wedge Osteotomy (AMA-Based CCWO) to Treat Cranial Cruciate Ligament Deficient Stifle in 204 Dogs Over 50 Kg

2025-3-VCOT-guenego-3

Article Title: Modified Cranial Closing Wedge Osteotomy (AMA-Based CCWO) to Treat Cranial Cruciate Ligament Deficient Stifle in 204 Dogs Over 50 Kg

Journal: Veterinary and Comparative Orthopaedics and Traumatology

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