Quiz Question
In Thibault 2023 et al., on DPO for THR luxation, what was the reported impact of DPO on angle of lateral opening (ALO) and version angle (VA)?
2023-8-VS-thibault-3
In Berger 2023 et al., on elbow COR estimation, why may it be challenging to match COR in diseased elbows with the normal contralateral joint?
🔍 Key Findings
- COR of elbows with FMCP was significantly more caudal compared to normal elbows, based on CT-derived geometry.
- In normal elbows, 74% of medial and 93% of lateral axes exited cranial and distal to the epicondyles.
- In FMCP elbows, 81% of medial and 70% of lateral axes exited caudal and distal to the epicondyles.
- Different landmark combinations produced slightly different COR approximations, especially between humeral vs. radius/ulna-based axes.
- The medial-lateral axis using trochlea and capitulum centers provided the most consistent COR approximation.
- COR estimations based on diseased elbows may not match normal joint geometry, impacting implant alignment accuracy.
- External epicondylar landmarks may be useful intraoperatively to estimate COR location, but variability limits precision.
- Drill diameter size may buffer small COR differences, but impact in advanced disease or bilateral cases remains unclear.
Veterinary Surgery
1
2023
The use of subchondral bone topography to approximate the center of rotation of the elbow joint in dogs
2023-1-VS-berger-4
In McCarthy 2022 et al., on 3D drill guide accuracy, what was the primary finding regarding drill angle deviation in the 3D-GDT group versus FHDT?
🔍 Key Findings
- 3D-printed drill guides (3D-GDT) significantly reduced craniocaudal and dorsoventral drilling angle deviation compared to free-hand drilling technique (FHDT), with statistical significance (p < .0001 and p = .01 respectively).
- No sacral corridor breaches occurred with 3D-GDT, whereas FHDT resulted in 20% drill exit incidences (3/15 cases).
- 3D-GDT had lower deviation from optimal drill trajectory at end points in all axes: craniocaudal (1.84 ± 1.6 mm vs. 4.18 ± 2.4 mm), dorsoventral (1.11 ± 1.0 mm vs. 2.4 ± 1.5 mm), and 3D linear (2.47 ± 1.4 mm vs. 5.35 ± 2.2 mm), all statistically significant.
- Strong correlation (r = 0.77) between CT and 3D software measurements validated method reliability.
- 3D guide trajectories showed consistent proximity to the optimal trajectory, especially at drill endpoints, indicating reduced variability in execution.
- 3D-GDT was developed using open-source software and inexpensive materials, supporting future clinical application.
- Major errors in FHDT occurred primarily at the drill endpoint, underscoring the challenge of maintaining optimal angulation during free-hand drilling.
- The sacral corridor was recharacterized as pyramidal (not quadrilateral), with implications for safer implant placement.
Veterinary Surgery
1
2022
Accuracy of a drilling with a custom 3D printed guide or free‐hand technique in canine experimental sacroiliac luxations
2022-1-VS-mccarthy-1
In Heikkilä 2024 et al., on COPLA scaffold evaluation, which parameter improved significantly only in unilaterally operated COPLA limbs?
🔍 Key Findings Summary
- 22 dogs (36 shoulders) with shoulder OCD randomly assigned to COPLA scaffold (n=19) or Control (n=17) group
- At 6 months: Significantly fewer dogs in COPLA group had OA (14% vs. 67%; p = 0.019)
- At 1.5 years: OA prevalence increased in both groups with no significant difference (COPLA: 64%, Control: 60%)
- HCPI (pain index) increased significantly at 1 week post-op in COPLA dogs only (p = 0.001), but later normalized
- Static weight-bearing improved only in unilaterally operated COPLA limbs (p = 0.015)
- One dog in COPLA group had a fragment dislodge requiring arthroscopic removal
- Overall, COPLA scaffold may provide short-term benefit in OA reduction, but long-term outcomes were similar
Veterinary and Comparative Orthopedics and Traumatology
6
2024
Randomized, Blinded, Controlled Clinical Trial of Polylactide–Collagen Scaffold in Treatment of Shoulder Osteochondritis Dissecans in Dogs
2024-6-VCOT-heikkila-3
In Antonakakis 2022 et al., on telovelar tumor resection, what postoperative imaging finding confirmed complete resection of the tumor?
🔍 Key Findings
- Telovelar approach enabled complete resection of a fourth ventricle choroid plexus tumor in a dog without postoperative complications.
- Postoperative MRI confirmed gross total tumor removal, and the dog remained neurologically normal 28 months post-surgery.
- The tela choroidea was used as a surgical landmark and incised to allow atraumatic access to the tumor.
- Cerebellum was spared using this technique, minimizing risk of cerebellar injury (e.g., cerebellar mutism).
- No hemorrhagic complications were noted during surgery due to dissection through avascular planes.
- Histopathology favored choroid plexus carcinoma based on mitotic index (9/10 HPFs), though definitive diagnosis remained pending.
- The case highlights the utility of telovelar over transvermian approach, given its minimally traumatic nature and improved exposure.
- Survival beyond 2 years without adjunctive therapy suggests surgical excision alone may be curative in select cases.
Veterinary Surgery
8
2022
Use of a telovelar approach for complete resection of a choroid plexus tumor in a dog
2022-8-VS-antonakakis-2
In Mullen 2024 et al., on NIRF for GDV, what intraoperative variable was significantly different between viable and nonviable groups?
🔍 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.
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
In Konno 2026 et al., on hepatic mass resection risks, what was the significance of the corrected distance from the mass to the CVC?
🔍 Key Findings
- Postoperative complications occurred in 17.7% of dogs undergoing hepatic mass resection; mortality was 6.3%
- Shorter corrected distance from hepatic mass to CVC (per 0.1 cm/kg decrease) was significantly associated with increased complications (OR: 0.666; p = .017)
- Presence of underlying disease increased complication risk (OR: 2.703; p = .007)
- Intraoperative hypotension was a strong predictor of complications (OR: 3.589; p = .019)
- Surgical time was borderline significant in multivariable models (OR: 1.011 per min; p = .052)
- Liver lobe location (left, central, right) was not significantly associated with complications
- Prothrombin time (PT) correlated with complication risk in univariable analysis but was not consistently significant in multivariable models
- CT evaluation of mass proximity to the CVC is a useful preoperative predictor of complication risk
Veterinary Surgery
1
2026
Risk factors for complications associated with canine hepatic mass resection: A study of 96 cases
2026-1-VS-konno-2
In Isono 2025 et al., on tibial malalignment in MPL, which of the following parameters was newly introduced and found to correlate with both TTA and CRA?
🔍 Key Findings
- Proximal Tibia Metatarsal Angle (PTMTA) was significantly increased in dogs with grade 3 and 4 MPL, making it a useful marker for severity.
- PTMTA strongly correlated with Tibial Torsion Angle (TTA) (r = 0.733) and Crural Rotation Angle (CRA) (r = 0.643), integrating multiple morphological deformities.
- Grade 4 MPL cases showed significant internal tibial torsion, increased mMPTA, and decreased MDTT/PTW—indicating both rotation and medial displacement.
- DTMTA was significantly more negative in grade 4, indicating a consistent pattern of internal foot rotation with disease severity.
- PTMTA can be visually assessed during palpation, offering preoperative utility without CT.
- Among toy poodles, PTMTA showed significant differences even between grades 3 and normal, suggesting breed-specific severity patterns.
- Corrective osteotomy may need to address tibial as well as femoral deformities in severe MPL cases with high PTMTA.
- Younger dogs with grade 4 MPL had more severe deformities, possibly due to early onset or developmental progression.
Veterinary and Comparative Orthopaedics and Traumatology
4
2025
Tibial Torsion Malalignment in Small Dogs with Medial Patellar Luxation
2025-4-VCOT-isono-1
In Longo 2023 et al., on CT trochlear measurements, what best describes the significance of FTA and FTRIA in surgical planning for MPL?
🔍 Key Findings
- Dogs with MPL had significantly shallower femoral trochlear grooves compared to controls, based on CT-measured femoral trochlear groove angle (FTGA).
- FTGA >134° in small breeds (SB) and >128° in medium/large breeds (MLB) were associated with MPL and can serve as surgical thresholds for considering trochleoplasty.
- FTA and FTRIA measurements were less reliable, showing lower sensitivity/specificity than FTGA.
- Inter-rater reliability for FTGA was excellent (ICC > 0.9), supporting its use in clinical decision-making.
- FTGA differed significantly between SB and MLB dogs, suggesting anatomical variation influences MPL predisposition.
- Dogs with MPL but with FTGA below threshold may not benefit from trochleoplasty, supporting individualized surgical planning.
- CT provides more precise and reproducible evaluation of trochlear morphology than radiography or ultrasound.
- The study introduces a CT protocol using P25 and P50 reference points for consistent FTGA measurement.
Veterinary Surgery
3
2023
Computed tomographic measurements of the femoral trochlea in dogs with and without medial patellar luxation
2023-3-VS-longo-3
In Knudsen 2024 et al., on clinical application, what was the negative predictive value of CTA during second reading for experienced observers?
🔍 Key Findings Summary
- Study Design: Prospective case series of 52 scans from 44 dogs with CCL injury.
- Main Technique: 16-slice CTA; evaluated by 3 observers with varying experience; validated against surgical mini-medial arthrotomy findings.
- Diagnostic Metrics (Reading 2):
- Sensitivity: 1.00 (Observers 1 & 2), 0.93 (Observer 3)
- Specificity: 0.78–0.91
- Positive Likelihood Ratio: Up to 10.71
- Negative Likelihood Ratio: As low as 0.08
- Accuracy: 90%+ for all in Reading 2
- Observer Effect: Significant improvement between first and second reading for less experienced observers (p < 0.05); learning curve evident.
- Meniscal lesions found:
- 9/12 in suspected late meniscal injury cases
- 19/40 in newly diagnosed CCL cases
- Most common = bucket handle tears
- Conclusion: Multidetector CTA is a clinically useful, non-invasive tool for identifying medial meniscal lesions in dogs with CCL disease.
Veterinary Surgery
1
2024
Diagnosis of medial meniscal lesions in the canine stifle using multidetector computed tomographic positive-contrast arthrography
2024-1-VS-knudsen-4
Quiz Results
You answered 7 out of 10 questions correctly
Key Findings