
Quiz Question
In Gollnick 2024 et al., on TCTF risk with Arthrex STS in TPLO, which screw location was most commonly associated with TCTFs?
🔍 Key Findings
- 42% of dogs (33/78) treated with Arthrex 3.5 mm STS during TPLO developed radiographic TCTF
- TCTFs occurred exclusively distal to the osteotomy
- 14% of screws (36/250) distal to the osteotomy were associated with TCTFs
- 6% of dogs with TCTFs developed major complications (e.g., complete tibial fracture requiring surgical revision)
- Angulation of cortical STS screws, especially in the distal plate holes, was a key contributor to complications
- Locking screws were also involved, but cortical screws angled improperly were overrepresented in serious outcomes
- Revision recommendations included preemptive fixation for large TCTFs or angulated screw placements
- Use of non-self-tapping screws (NSTS) previously showed a <1% TCTF rate, supporting higher risk with STS
Veterinary Surgery
6
2024
Tibial fracture associated with use of Arthrex self‐tapping screws during tibial plateau leveling osteotomy in dogs and development of transcortical tibial fracture
2024-6-VS-gollnick-2
In Huels 2025 et al., on second-generation screw cup THA, what was the observed rate of late aseptic loosening?
🔍 Key Findings
- Total complication rate was 16.7%, with 5/30 hips experiencing major complications, mostly related to the femoral component.
- Cup-associated complications were rare (3.3%), with only one case of acetabular cup luxation attributed to surgical technique rather than implant failure.
- No cases of late aseptic loosening were observed during a median follow-up of 17.5 months.
- Implant stability was attributed to the SCSL's porous, trabecular titanium surface, enhancing osseointegration.
- Three femoral stem fractures occurred in a single dog, leading to implant removal; material testing was not performed.
- Most complications were femoral in origin (6/7), not acetabular, suggesting improved performance of the SCSL.
- Explantation rate was 13% (4/30), but some removals were due to owner preference against revision.
- Subjective functional outcome was full recovery in 26/30 hips, including one with successful revision of stem subsidence.
Veterinary and Comparative Orthopaedics and Traumatology
2
2025
Complications and Long-Term Outcome in 30 Canine Total Hip Arthroplasties Using a Second-Generation Selective Laser Melted Screw Cup
2025-2-VCOT-huels-1
In Deprey 2022 et al., on gap fracture implants, which construct demonstrated higher torque to failure during torsional testing?
🔍 Key Findings
- NAS-ILN had significantly greater stiffness in both axial compression and 4-point bending compared to LCP constructs.
- Ultimate load to failure was significantly higher for NAS-ILN in compression (804 N vs 328 N) and bending (25.7 Nm vs 16.3 Nm).
- Torsional stiffness and angular deformation were similar, but NAS-ILN resisted higher torque to failure than LCP (22.5 Nm vs 19.1 Nm).
- No slack was observed with the NAS-ILN construct, unlike older nail designs.
- Failure modes differed: LCPs failed via plate bending; NAS-ILNs failed at the implant or bone near screw holes.
- Titanium alloy and curved design of NAS-ILN provides better anatomic fit and more uniform stress distribution.
- A third, perpendicular locking hole in NAS-ILN may enhance torsional stability but was not utilized in this study.
- The curved, angle-stable design of NAS-ILN is a novel advancement in veterinary orthopedics.
Veterinary Surgery
8
2022
Mechanical evaluation of a novel angle‐stable interlocking nail in a gap fracture model
2022-8-VS-deprey-3
In Dalton 2023 et al., In Minimally invasive acetabular fracture repair in dogs, what was the primary purpose of using mirrored 3D-printed hemipelves in this study?
🔍 Key Findings
- Feasibility study in 5 canine cadavers plus 1 clinical case (Chihuahua, 5.5 kg).
- Technique used two small approaches (caudal and craniolateral) connected with an epiperiosteal tunnel.
- Plates were precontoured on mirrored 3D-printed hemipelves to improve fit and reduce intraoperative bending.
- Cadaver outcomes: fracture gap <2 mm, step defect <1 mm, pelvic angulation <5°.
- Sciatic nerve injury was minimal: 1/5 cadavers had a mild indentation; others had no gross injury.
- Median total surgical time: ~46 minutes in cadavers; incisions ~5 cm.
- Clinical Chihuahua case: weight-bearing within 24 hrs, radiographic union at 3 months; one screw fractured but no adverse effect.
- Authors conclude: MIAF with 3D printing is feasible and accurate, but requires further evaluation before routine use.
Veterinary Surgery
7
2023
Minimally invasive repair of acetabular fractures in dogs: Ex vivo feasibility study and case report
2023-7-VS-dalton-1
In Rodiño Tilve 2022 et al., on feline THR outcomes, which implant feature was associated with all luxation complications?
🔍 Key Findings
From “Long-term follow up of 44 cats undergoing total hip replacement” by Rodiño Tilve et al.
- Slipped capital femoral epiphysis (SCFE) was the most common surgical indication (61%, 34/56 hips), primarily affecting young neutered male cats.
- All THRs used cemented micro/nano BioMedtrix implants; most common femoral stem was size #3, and most common acetabular cup was 12 mm.
- Postoperative complication rate was 19.6% (11/56) with 9 major complications (luxation most common), and no intraoperative complications reported.
- All luxations occurred in hips implanted with femoral neck +0 mm length implants.
- Second luxations were more common when revision used same implant size; use of larger implants reduced reluxation rates.
- FMPI-sf score improved significantly from median 2.111 pre-op to 0.111 post-op (P < .001), indicating reduced pain and improved function.
- Very high owner satisfaction: 91% (30/33) reported outcome as "very good."
- No significant associations found between complications and variables like weight, sex, implant size, or surgical indication.
Veterinary Surgery
5
2022
Long‐term follow up of 44 cats undergoing total hip replacement: Cases from a feline hip registry (2010–2020)
2022-5-VS-rodino-3
In Wilson 2025 et al., on acetabular measurement accuracy, what was the main drawback of femoral head circle methods?
🔍 Key Findings
Study population: 73 hips from 60 dogs undergoing cementless THR.
Methods evaluated:
- ACVD/ACOLL (acetabular circle on VD or OLL view)
- ALVD/ALOLL (acetabular line)
- FHCVD/FHCOLL/FHCCCHB (femoral head circle)
- Intraobserver repeatability and interobserver consistency were excellent for ACVD and ACOLL.
- FHC methods consistently underestimated actual cup size by 2.4–3.6 mm.
- AC and AL methods had low bias (±0.5 mm) and better predictive value.
- OA severity negatively affected the accuracy of all measurements (p < .05).
- Highest predictive accuracy was ~49% using ACVD with rounding down protocol.
Veterinary Surgery
1
2025
Evaluation of three acetabular measurement methods for total hip replacement in dogs
2025-1-VS-wilson-2
In Raleigh 2022 et al., on pericardiectomy complications, which surgical tool was most frequently associated with the onset of ventricular fibrillation?
🔍 Key Findings
- Ventricular fibrillation (VF) occurred in 3% of pericardiectomy cases across reporting institutions.
- 14 of 16 dogs (88%) that developed intraoperative VF died, indicating high mortality.
- Electrosurgical devices were used in 15/16 dogs; VF onset coincided with their use in 8 dogs, suggesting a potential but unproven association.
- Preoperative arrhythmias were seen in 7 dogs (e.g., VPCs, VT, bradycardia), possibly serving as early warning signs.
- Thoracoscopic approach was used in 75% of cases; however, conversion to open surgery was required in 9/13 thoracoscopic procedures after VF onset.
- Defibrillation was attempted in 13 dogs, but only 3 converted to sinus rhythm, and only 2 survived postoperatively.
- VF may result from stray current or cardiac manipulation; bipolar energy devices were implicated despite lower theoretical risk.
- Preventative strategies include judicious electrosurgery use, close ECG monitoring, rapid CPR preparedness, and preop cardiac risk assessment.
Veterinary Surgery
4
2022
The development of ventricular fibrillation as a complication of pericardiectomy in 16 dogs
2022-4-VS-raleigh-3
In Scott 2023 et al., on thoracoscopic-assisted lung lobectomy, which **surgical device** was associated with **shorter median surgery time**?
🔍 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.
Veterinary Surgery
1
2023
Complications and outcomes of thoracoscopic-assisted lung lobectomy in dogs
2023-1-VS-scott-3
In Lee 2022 et al., on TPLO accuracy, what feature of the 3D-printed guide directly aided in more accurate jig pin placement?
🔍 Key Findings
- 3D-printed TPLO guides significantly reduced osteotomy inclination angle in both bone models and cadaver limbs compared to jig alone (P < .001).
- Torsional deformities were lower when the 3D-printed guide was used in bone models (P < .001), but not significantly different in cadavers.
- Angular deformities were significantly reduced in cadavers using 3D-printed guides (P < .001).
- Proximal jig pin angulation was more accurate with the guide in cadavers (P < .001); not significant in bone models.
- Medial cortex damage was substantially reduced in bone models when the 3D-printed guide was used (P < .001).
- Postoperative tibial plateau angle (TPA) did not differ significantly between groups, suggesting that clinical alignment can still be achieved without the guide.
- Clinical significance of improved metrics is uncertain, but improved precision may reduce surgical complications.
- 3D guide design allowed direct placement of jig and bone plate, potentially improving workflow and safety.
Veterinary Surgery
6
2022
Evaluation of a customized 3D‐printed saw guide for tibial plateau leveling osteotomy: An ex vivo study
2022-6-VS-lee-5
In Jeon 2025 et al., on distal femoral shortening, what was the **median femoral shortening ratio** required to achieve prosthesis reduction?
🔍 Key Findings
- Distal femoral shortening osteotomy (DFSO) enabled prosthesis reduction in all 4 dogs with irreducible luxoid hips undergoing total hip replacement.
- Median femoral shortening ratio was 13.8% (range: 10.7–15.3%) based on intraoperative tension needed for prosthesis reduction.
- Bone union was achieved in all cases post-DFSO, indicating good healing potential.
- Two major complications occurred: one prosthetic luxation and one aseptic stem loosening requiring explantation.
- One intraoperative fracture of the greater trochanter occurred during trial reduction before DFSO.
- DFSO did not result in neurovascular injury, even in cases with significant femoral head displacement (>4 cm).
- Radiographic planning with FHD index and intraoperative assessment were crucial for determining DFSO necessity.
- DFSO avoids complications linked to subtrochanteric osteotomy by preserving proximal femoral anatomy and allowing secure distal fixation.
Veterinary Surgery
6
2025
Distal femoral shortening osteotomy for managing irreducible hips during total hip replacement in four dogs with severe luxoid hips
2025-6-VS-jeon-2
Quiz Results
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Key Findings
