
Quiz Question
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 Lederer 2025 et al., on MIPO vs ORPS, which fracture type was more common in dogs treated with MIPO?
🔍 Key Findings
Study size: 105 dogs (73 ORPS; 32 MIPO)
MIPO vs ORPS differences:
- Surgical time: MIPO median 130 min vs ORPS 85 min (p < .001)
- Explant rate: MIPO 25% vs ORPS 4.1% (p = .003)
- Time to clinical union: MIPO 85 days vs ORPS 57 days (p = .010)
- Frontal alignment deviation: MIPO 3.5° vs ORPS 2.0° (p = .047)
- Comminution more frequent in MIPO (41% vs 16%; p = .012)
Significant predictors for MIPO use: More proximal fracture margin (p = .004), surgeon identity (p < .001)
No significant difference: Sagittal alignment, radial length, union rate, or complication rate by surgeon
Implant preference: Fixin plates used in 84% of MIPO; locking plates more common in ORPS
Veterinary Surgery
4
2025
Retrospective comparison of minimally invasive plate osteosynthesis and open reduction and plate stabilization of antebrachial fractures in 105 dogs (2017–2022)
2025-4-VS-lederer-2
In Korchek 2025 et al., on fracture gap risk, which postoperative finding was most strongly associated with implant failure in toy breed dogs with radius/ulna fractures?
🔍 Key Findings
80 toy breed dogs with surgically repaired transverse radius/ulna fractures were analyzed.
Fracture gap in the caudal cortex was present in 46% of cases.
Implant failure rate:
- 27% in cases with fracture gap
- 2% in cases without fracture gap
Fracture gap significantly associated with implant failure:
- OR = 23.0, 95% CI: 2.7–197.9, p = 0.004
Absence of external coaptation also associated with increased implant failure risk:
- OR = 10.1, 95% CI: 1.1–89.6, p = 0.04
Prolonged external coaptation (>1 week) linked to non-implant complications (skin wounds, osteopenia, osteomyelitis):
- OR = 5.4, p = 0.04
Plate thickness, type, open screw holes, and working length were not statistically significant predictors of implant failure after multivariable analysis.
Veterinary Surgery
2
2025
Association of fracture gap with implant failure in radius and ulna fractures in toy breed dogs—A multicenter retrospective cohort study
2025-2-VS-korchek-1
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 Lomas 2025 et al., on DPO and dorsolateral subluxation, what plate angle resulted in the greatest increase in DLS score postoperatively?
🔍 Key Findings
- DPO significantly improved femoral head coverage, increasing mean DLS from 36.1% to 71.4% postoperatively (p < 0.001).
- No significant change in DLS between immediate postoperative and follow-up scans, suggesting stable surgical outcomes over time.
- Greater plate angle (30°) yielded larger DLS improvement (mean increase: 39.8%) compared to 25° and 20° plates.
- Only 3 hips had post-op DLS scores <55%, indicating most patients had lower risk of osteoarthritis progression.
- No correlation found between DLS improvement and age, body weight, or side of surgery, suggesting broad applicability.
- CT was used for DLS measurement in simulated weight-bearing, improving precision over radiographic methods.
- Major limitations included small sample size, multiple surgeons, and variable sedation vs anesthesia during imaging.
- DPO confirmed as effective for reducing dorsolateral subluxation, improving coxofemoral joint congruency in dysplastic dogs.
Veterinary and Comparative Orthopaedics and Traumatology
2
2025
The Impact of Double Pelvic Osteotomy on Dorsolateral Subluxation in 24 Dogs
2025-2-VCOT-lomas-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 Burton 2025 et al., on antebrachial conformation, what is a proposed biomechanical consequence of increased PRUDA?
🔍 Key Findings
- PRUDA (proximal radio-ulnar divergence angle) and UCORA (ulnar center of rotation of angulation) were significantly greater in Cocker Spaniels with HIF vs those without.
- PRUDA (p < .001): Group 1 (HIF) vs Group 2 & 3.
- UCORA (p = .036): Group 1 vs Group 3.
- Other angles (MPRA, LDRA, PCRA, DCRA, torsion) showed no significant differences.
- Increased PRUDA and UCORA may lead to divergent load vectors across the humeral condyle, potentially predisposing to stress fracture (HIF).
- Measurement techniques using CT-based 3D reconstructions were reliable (intraobserver ICC > 0.84).
Veterinary Surgery
4
2025
Antebrachial conformation in Cocker Spaniels with and without humeral intracondylar fissure
2025-4-VS-burton-5
In Pfeil 2024 et al., on fluoroscopic pinning, how many metabone fractures were treated across all animals?
🔍 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-1
In Loh 2024 et al., on treatment outcomes for CvHL in dogs, what was the most common etiology?
🔍 Key Findings
- Low-trauma events caused 82.9% of CvHL cases; Poodles and poodle-crosses represented 49.4% of cases.
- Success rate of hobbles (61.8%) was significantly higher than closed reduction alone (10.3%) or Ehmer sling (18.5%).
- Multivariate analysis found hobbles 7.62x more likely to succeed vs. closed reduction (p = .001).
- Specialist surgeons had higher success with nonsurgical management (OR: 2.68; p = .047).
- Older age associated with better outcomes (OR: 1.15 per year; p < .0005).
- Ehmer sling is not recommended due to high failure and complication rates (60.6%).
- Toggle rod stabilization had a high surgical success rate (88.2%) with low complication.
- No link was found between CvHL and hip dysplasia or OA in most cases (only 2/108 showed OA).
Veterinary Surgery
4
2024
Caudoventral hip luxation in 160 dogs (2003–2023): A multicenter retrospective case series
2024-4-VS-loh-4
In Muroi 2025 et al., on refracture risk, what factor was significantly associated with refracture in dogs **retaining plates**?
🔍 Key Findings
- Refracture occurred in 5.5% of limbs, with higher incidence in the plate removal group (12.5%) vs. non-removal (3.5%).
- In the non-plate removal group, refractures occurred at the most distal screw site, linked to greater screw position change during growth (OR 1.79, p=0.04).
- Screw-to-bone diameter ratio (SBDR) >0.4 was a significant risk factor for refracture in the plate retention group.
- In the plate removal group, refractures occurred at the original fracture site, associated with lower pixel value ratio (bone mineral density) and reduced radial thickness.
- Implant-induced osteoporosis (IIO) beneath the plate likely contributed to refracture risk after plate removal.
- Younger age at fracture (<6 months) was associated with higher refracture risk due to ongoing radial growth and shifting screw position.
- No significant association was found between refracture and plate type (locking vs conventional), fixation method, or ulnar union.
- Recommendations include careful SBDR sizing, motion restriction, and cautious plate removal decisions in growing dogs.
Veterinary and Comparative Orthopaedics and Traumatology
2
2025
A Retrospective Study of Risk Factors Associated with Refracture after Repair of Radial–Ulnar Fractures in Small-Breed Dogs
2025-2-VCOT-muroi-1
Quiz Results
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Key Findings