
Quiz Question
In Guevara 2024 et al., on implant placement accuracy, what was the rate of acceptable pin placement using 3D-printed guides?
🔍 Key Findings:
- Sample: 24 canine cadavers, 477 total pins across 240 vertebrae.
- Technique Comparison: 3D printed guides (3DPG) vs freehand (FH).
- Acceptable Placement Rates: 3DPG = 87.5%, FH = 69.8% (p < .0001).
- Odds Ratio for FH: 0.28 (95% CI 0.16–0.47), significantly less likely to yield acceptable placement.
- Worst Accuracy Locations: T10 (OR 0.10), T11 (OR 0.35).
- Surgeon Impact: Surgeon 2 outperformed others (OR 9.61, p = .001).
- Modified Zdichavsky Classification used to score implant accuracy (Grades I–IIIb).
- Primary Benefit of 3DPG: Increased safety and precision, regardless of surgeon experience.
Veterinary Surgery
2
2024
Ex vivo comparison of pin placement with patient-specific drill guides or freehand technique in canine cadaveric spines
2024-2-VS-guevara-1
In Kimura 2025 et al., on mini-THA in <4 kg dogs, what complication led to the discontinuation of a THA procedure in one case?
🔍 Key Findings
- Zurich mini-cementless THA was successful in 9/10 hips in dogs <4 kg, with no lameness at 52 weeks in completed cases.
- Helsinki Chronic Pain Index significantly improved from a mean of 19.8 to 2.3 at 52 weeks (p = 0.0141).
- Fluoroscopy improved implant positioning, especially in LCPD and HD cases, aiding in accurate reaming and alignment.
- Intraoperative complications occurred in 2/10 cases, including acetabular fractures; one case required discontinuation.
- Prophylactic bicortical screws and reinforcement plates were used in cases with rotational instability or cortical compromise and were effective in preventing loosening/fractures.
- Medial patellar luxation improved postoperatively in one dog, though recurrence was noted later without surgical correction.
- No stem or implant loosening or fracture occurred over a mean follow-up of 24.4 months.
- CT is recommended in preoperative planning, particularly in luxoid hip dysplasia cases with uncertain bone stock.
Veterinary Surgery
6
2025
Long‐term outcomes of 10 dogs weighing less than 4 kg after Zurich mini‐cementless total hip arthroplasty
2025-6-VS-kimura-4
In Kang 2024 et al., on sacroiliac fixation strength, what was the primary failure mode for the double 2.3-mm HCS group?
🔍 Key Findings Summary
- 20 cats with pelvic fractures treated using locking plates with only cortical screws
- 28 fractures stabilized (ilium: 17, acetabulum: 6, ischium: 3, pubis: 2)
- Implants: Primarily 1.5/2.0 mm LCPs or String-of-Pearls plates
- Major complications in 2/20 cases (10%): sciatic entrapment, malunion requiring THA
- Minor complications in 2/20 cases (10%): plate impingement, transient lameness
- Clinical union in all cats by 8 weeks; all cats returned to full function
- Authors conclude cortical screws alone can provide adequate fixation in feline pelvic fractures if screw purchase and bone quality are sufficient
Veterinary and Comparative Orthopedics and Traumatology
1
2024
Biomechanical Comparison of Double 2.3-mm Headless Cannulated Self-Compression Screws and Single 3.5-mm Cortical Screw in Lag Fashion in a Canine Sacroiliac Luxation Model
2024-1-VCOT-kang-2
In Perez Neto 2025 et al., on hip resurfacing arthroplasty, what was the impact of implant positioning (neutral vs valgus) on biomechanical performance?
🔍 Key Findings
- In an ex vivo study of 20 canine femur pairs, implantation of a novel hip resurfacing arthroplasty (HRA) prosthesis reduced maximum load (ML) by 22% and load at collapse (LC) by 27% vs. intact controls (p ≤ 0.05).
- Displacement at maximum load (DML), displacement at collapse (DC), and stiffness (k) were not significantly different between prosthesis and control groups.
- Both groups showed similar failure patterns, with 92% failing at the femoral neck.
- All prosthetic femurs still withstood ~6.2× body weight — exceeding estimated in vivo peak loads (~1.64× BW).
- Prosthesis positioning (neutral vs valgus) had no significant effect on biomechanical outcomes.
- Implant design preserved more metaphyseal bone stock than total hip replacement, possibly explaining the smaller load reduction compared to other short-stem prostheses.
- The press-fit cobalt–chromium design with conical stem allowed full contact and stress distribution over the femoral head/neck.
- Authors conclude the device has adequate immediate biomechanical strength for clinical use, though long-term in vivo studies are needed.
Veterinary and Comparative Orthopaedics and Traumatology
4
2025
Biomechanical Evaluation of a Femoral Implant for Hip Resurfacing Arthroplasty in Dogs: An Ex Vivo Study
2025-4-VCOT-perezneto-5
In Poggi 2024 et al., on laparoscopic resection of pancreatic masses in dogs, what was the most common histopathologic diagnosis among the pancreatic masses resected laparoscopically?
🔍 Key Findings
- Laparoscopic pancreatic mass resection (LPMR) was successfully performed in all 12 dogs, with no conversion to open laparotomy required.
- Median operative time was 69 minutes (range 35–100 min); 11/12 dogs were discharged within 48 hours, and one was discharged after 7 days.
- No major intraoperative complications occurred; minor complications included mild bleeding (2/12) and cannula malfunction (1/12).
- All dogs survived the procedure and were discharged.
- Histopathology confirmed neoplasia in all dogs: 9 insulinomas and 3 pancreatic carcinomas; all tumors were completely excised with clear margins.
- No recurrences were reported; 3 dogs died of unrelated causes, and 9 were still alive at the time of reporting.
- No postoperative hypoglycemia was observed; 1 dog had transient hyperglycemia, and minor complications included vomiting, idiopathic seizures, and pancreatitis, all of which resolved.
- Authors concluded that LPMR is a safe, effective, and minimally invasive alternative to open surgery for selected distal pancreatic masses in dogs.
Veterinary Surgery
5
2024
Laparoscopic resection of pancreatic masses in 12 dogs
2024-5-VS-poggi-2
In Hanlon 2022 et al., on short screw sacroiliac fixation, what complication was observed in some short screw cases?
🔍 Key Findings
- Two short screws (SLS or SPS) provided >2× peak load, yield load, and stiffness vs a single long screw (LLS) for SI joint stabilization.
- No mechanical advantage was seen between the two short screw types (lag vs positional).
- All short screws terminated lateral to the spinal canal, avoiding spinal impingement.
- Ventral sacral foraminal impingement occurred in 3 short-screw cases (1 SPS, 2 SLS), all involving the caudal screw.
- LLS group showed more abaxial displacement at osteotomy sites, suggesting inferior stabilization for concurrent pelvic fractures.
- Short screw constructs had longer total screw length (48 mm) than LLS (40 mm), contributing to increased stiffness.
- Positioning of caudal screw in a cranial/craniodorsal trajectory may help avoid nerve foraminal injury.
- No significant difference in displacement at peak load among groups; stiffness and load capacity were the primary benefits.
Veterinary Surgery
7
2022
Mechanical evaluation of canine sacroiliac joint stabilization using two short screws
2022-7-VS-hanlon-4
In Papacella-Beugger 2024 et al., which anatomical limitation required a custom reference array?
🔍 Key Findings Summary
- Cadaveric study using 3 miniature breed dogs (6 hemipelves) to assess spinal neuronavigation accuracy for lumbar plate fixation
- 20 screws placed using CBCT-based navigation with real-time tracking
- 85% (17/20) of screws were safely and accurately placed
- Median deviation of screw entry points from plan: 1.8 mm
- All 3 misplaced screws occurred in a single cadaver, attributed to inexperienced drill handling
- Custom 3D-printed lightweight tracking array was necessary due to small spinous processes in miniature dogs
- No iatrogenic canal perforations or vertebral damage in any specimen
- Concludes neuronavigation offers precise, safe placement of spinal implants in small dogs, with minimal anatomic disruption
Veterinary and Comparative Orthopedics and Traumatology
6
2024
Spinal Neuronavigation for Lumbar Plate Fixation in Miniature Breed Dogs
2024-6-VCOT-papacella-beugger-5
In Guevara 2024 et al., on implant placement accuracy, which surgeon had significantly higher odds of success?
🔍 Key Findings:
- Sample: 24 canine cadavers, 477 total pins across 240 vertebrae.
- Technique Comparison: 3D printed guides (3DPG) vs freehand (FH).
- Acceptable Placement Rates: 3DPG = 87.5%, FH = 69.8% (p < .0001).
- Odds Ratio for FH: 0.28 (95% CI 0.16–0.47), significantly less likely to yield acceptable placement.
- Worst Accuracy Locations: T10 (OR 0.10), T11 (OR 0.35).
- Surgeon Impact: Surgeon 2 outperformed others (OR 9.61, p = .001).
- Modified Zdichavsky Classification used to score implant accuracy (Grades I–IIIb).
- Primary Benefit of 3DPG: Increased safety and precision, regardless of surgeon experience.
Veterinary Surgery
2
2024
Ex vivo comparison of pin placement with patient-specific drill guides or freehand technique in canine cadaveric spines
2024-2-VS-guevara-5
In Nicolas 2024 et al., what postoperative outcome was observed at 1 month?
🔍 Key Findings Summary
- The lateral approach via scapular osteotomy allowed safe access to the T1-2 foramen in a French Bulldog with foraminal disc extrusion.
- A mini-hemilaminectomy was performed, preserving articular facets.
- The dog had no neurologic deficits postoperatively, returned to ambulation within 24 hours, and was discharged in 3 days.
- At 10 months, CT confirmed excellent scapular healing and no recurrence.
- Double 2.4-mm locking plates provided stable fixation across the scapular spine.
- The technique avoided thoracic entry or dorsal spine dissection, suggesting a less invasive alternative for select T1-2 foraminal cases.
Veterinary and Comparative Orthopedics and Traumatology
2
2024
Scapular Osteotomy for Lateral Access to a T1-2 Foraminal Disc Extrusion, Treated by Mini-Hemilaminectomy in a Dog
2024-2-VCOT-nicolas-2
In Scott 2025 et al., on acetabular cup revision, what was a notable complication observed postoperatively in some cases?
🔍 Key Findings
Population: 9 dogs underwent revision of osteointegrated acetabular cups after total hip arthroplasty (THA)
Revision Indications:
- 7 luxations (5 ventral, 2 craniodorsal)
- 1 femoral stem fracture
- 1 aseptic stem loosening
Implants:
- 8 BFX cups, 1 Helica; all revised to BFX
- 7/9 required a larger cup than original
Cup removal: Required sectioning with a high-speed burr and modular osteotome; removal fragments extracted
Complications:
- 1 recurrent luxation
- 1 low-grade infection with possible metallic debris-associated osteolysis
- 2 femoral fissures managed intraoperatively
Outcomes:
- Good to excellent function in 6/6 dogs available at median 621 days
- Minimal complications with success in re-osteointegration of new cup
Clinical takeaway: Revision of stable, ingrown cups is feasible and offers an alternative to pelvic osteotomies; typically requires upsizing
Veterinary Surgery
3
2025
Revision of osteointegrated acetabular cup prostheses in nine dogs
2025-3-VS-scott-4
Quiz Results
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Key Findings
