Quiz Question
In Planchamp 2022 et al., on imaging-based AAI diagnosis, what was the cutoff value of the VCI in dogs imaged in flexion?
🔍 Key Findings
- Ventral Compression Index (VCI) ≥0.16 (extension) or ≥0.2 (flexion) was diagnostic for AAI with 100% sensitivity and >94% specificity
- VCI had the highest diagnostic accuracy among all measured variables (AUC > 0.99)
- C1-C2 overlap ≤2.7 mm (extension) or ≤1.8 mm (flexion) also diagnostic for AAI (sensitivity 84–96%, specificity 81–90%)
- C1-C2 angle ≥176.9° (extension) or ≥187.4° (flexion) had high sensitivity and specificity (~95%)
- Basion-dens interval ≥5.9 mm (extension) or ≥3.0 mm (flexion) provided moderate diagnostic accuracy
- Cranial translation ratio (CTR) ≥0.18 classified dogs as potentially unstable (sensitivity 90%, specificity 78%)
- VCI ≥0.23 reliably differentiated AAI from potentially unstable cases (sensitivity 94%, specificity 94%)
- DALR ≤0.24 had high specificity (100%) but low sensitivity for AAI diagnosis
Veterinary Surgery
4
2022
Determination of cutoff values on computed tomography and magnetic resonance images for the diagnosis of atlantoaxial instability in small-breed dogs
2022-4-VS-planchamp-2
In Story 2024 et al., on surgical correction of excessive tibial plateau angle (eTPA), which group showed significant tibial shortening compared to others?
🔍 Key Findings
- All four techniques achieved TPA <14°, meeting the threshold for acceptable surgical correction in eTPA cases.
- Group A (CBLO + CCWO) and Group D (PTNWO) showed highest accuracy in achieving target TPA values.
- Group B (TPLO + CCWO) resulted in significant tibial shortening compared to other techniques.
- Group A caused the greatest cranial mechanical axis shift, while Group B caused the least.
- Group C (mCCWO) resulted in consistent under-correction of TPA, despite aiming for 0°.
- Modified or neutral wedge osteotomies (Groups C and D) had minimal effect on tibial length, making them suitable when preservation is important.
- All techniques involved mechanical axis shifts, highlighting the importance of preoperative planning to minimize morphologic disruption.
- Supplemental fixation was standard for all procedures to reduce risks such as tibial tuberosity fracture and plateau leveling loss.
Veterinary Surgery
8
2024
Morphologic impact of four surgical techniques to correct excessive tibial plateau angle in dogs: A theoretical radiographic analysis
2024-8-VS-story-2
In Pfeil 2024 et al., on fluoroscopic pinning, what was the median time to radiographic bone union?
🔍 Key Findings
- Fluoroscopically guided normograde metabone pinning (FGNMP) was used to treat 17 animals (15 dogs and 2 cats) with 57 metabone fractures, including various fracture configurations (short-oblique body, physeal, and comminuted).
- All 57 fractures were stabilized using intramedullary pins via FGNMP. The study exclusively focused on pin fixation and did not include screws or combined fixation techniques.
- Median surgical time was 54 minutes (range 26–99 min), indicating efficient procedural execution.
- Radiographic bone union was achieved in all fractures, with a median time to union of 6 weeks (range 4–12 weeks). Union was confirmed in all initially non-united fractures on follow-up.
- No major complications were reported. A single pressure sore at the olecranon resolved uneventfully, and no pin migration or osteomyelitis was observed.
- Pin extensions were noted radiographically (e.g., 42% distal subchondral overextension), but were not associated with clinical problems.
- Fluoroscopic guidance improved implant accuracy and preserved soft tissue, enabling effective fracture alignment and stabilization using this minimally invasive osteosynthesis (MIO) approach.
- The authors concluded that FGNMP is an effective, safe, and minimally invasive method for a variety of metabone fracture types, yielding quick recovery, fast healing, and good to excellent long-term functional outcomes in all 17 cases.
Veterinary Surgery
5
2024
Outcomes of 15 dogs and two cats with metabone fractures treated with fluoroscopically guided normograde metabone pinning
2024-5-VS-pfeil-2
In Sadowitz 2023 et al., on screw angle & speed, which group served as the control group with 0% TCF rate?
2023-8-VS-sadowitz-2
In Story 2024 et al., on eTPA osteotomy comparison, which technique resulted in the **greatest mechanical axis shift**?
🔍 Key Findings
- Population: 16 dogs (27 tibias), TPA >34°
- Techniques analyzed:
- Group A: CBLO + CCWO
- Group B: TPLO + CCWO
- Group C: mCCWO
- Group D: PTNWO
- Outcomes:
- All groups achieved post-correction TPA < 14°.
- Group A: Slight over-correction (mean TPA 10.47°); greatest mechanical axis shift.
- Group B: Tibial shortening (~0.58%); least mechanical axis shift.
- Group C: Lowest post-correction TPA (mean 4.76°); under-correction.
- Group D: High accuracy, minimal shortening (mean 7.09° post).
- Statistical Significance:
- Significant differences in tibial length change and mCrDTA (mechanical axis shift) between groups (p <.05).
- TPA correction accuracy: Group A (1.02), B (0.95), C (0.89), D (0.98).
Veterinary Surgery
1
2024
Morphologic impact of four surgical techniques to correct excessive tibial plateau angle in dogs: A theoretical radiographic analysis
2024-1-VS-story-1
In Pfund 2025 et al., on femoral cortical thickness, what was the observed effect of a 0.001 increase in CTI on fracture risk?
🔍 Key Findings
- Lower CTI values were significantly associated with higher risk of both intraoperative and postoperative femoral fractures or fissures (p <.0001).
- The mean CTI for all dogs was 0.285, whereas dogs with fissures/fractures had a mean CTI of 0.246.
- For each 0.001 increase in CTI, odds of fissure/fracture decreased by 2–3% depending on perioperative timing.
- High interobserver reliability (ICC = 0.984) and consistency between pre- and postoperative CTI measurements (ICC = 0.96).
- CTI was the only significant risk factor identified; age, breed, bodyweight, BCS, CFI, or luxoid hips were not significant.
- Prophylactic lateral plating in dogs with low CTI (mean 0.230) resulted in no postoperative fractures.
- Postoperative fractures occurred in 8% of cases, and 93% of dogs returned to full function within one year.
- CTI may be a useful radiographic screening tool, especially when advanced imaging (e.g., DEXA) is unavailable.
Veterinary Surgery
6
2025
Femoral cortical thickness index in a population of dogs undergoing total hip replacement
2025-6-VS-pfund-3
In Jourdain 2024 et al., on fluoroscopic fixation of feline SIL, what percentage of screws had ≥60% purchase within the sacral body?
🔍 Key Findings
- Minimally invasive fluoroscopic technique yielded median reduction of 94.1% immediately postoperative.
- Screw purchase ≥60% in sacral body achieved in 82% of cases, with median purchase of 73.3%.
- One screw exited caudally; no dorsal, ventral, or cranial exits reported.
- At 7-week follow-up, reduction and purchase slightly declined but remained effective (p = .008 and p = .013).
- No screw loosening observed, even in suboptimal reductions or purchases.
- Pelvic canal width and symmetry (PCDR and HCWR) were restored and maintained.
- Excellent long-term function: FMPI ≥0.98 in 9 of 10 cats; owners reported 10/10 satisfaction.
- Fluoroscopy enabled accurate screw placement and minimized tissue trauma, contributing to rapid recovery.
Veterinary Surgery
4
2024
Fluoroscopically-assisted closed reduction and percutaneous fixation of sacroiliac luxations in cats using 2.4 mm headless cannulated compression screws: Description, evaluation and clinical outcome
2024-4-VS-jourdain-2
In Scheuermann 2023 et al., on femoral MIPO alignment, which reduction system resulted in longer surgical times?
🔍 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.
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-2-0341d
In Turner 2025 et al., on TPA changes after SH-1/2 fracture repair, what was the average decrease in tibial plateau angle between injury and first reevaluation?
🔍 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
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-1
In Peterson 2022 et al., on crescent guide in TPLO, what is a noted **limitation** of the crescent guide compared to a standard TPLO jig?
🔍 Key Findings
- Crescent guide use resulted in significantly less medial cortical damage (mean 3.8 mm²) than the radial saw guide (35.7 mm²) and standard jig (51.3 mm²) in bone models.
- No significant difference in osteotomy accuracy (distance of eccentricity, coronal or axial angulation) among crescent guide, radial guide, or standard jig in either bone models or cadavers.
- Device application time was shortest with the crescent guide and longest for the radial saw guide.
- Osteotomy time was fastest with the crescent guide compared to the radial saw guide (P = .015).
- Participants rated the crescent guide easier to apply than both the radial saw guide (P < .005) and the standard jig (P = .015).
- 5 of 6 novice participants preferred the crescent guide over the other devices for performing TPLO.
- Subjective ease of osteotomy performance was higher with the crescent guide vs. radial guide (P < .001).
- Crescent guide does not assist in fragment stabilization or plateau rotation unlike a standard TPLO jig.
Veterinary Surgery
3
2022
Evaluation of a crescent saw guide for tibial plateau‐leveling osteotomy: An ex vivo study
2022-3-VS-peterson-5
Quiz Results
You answered 7 out of 10 questions correctly
Key Findings