🔍 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.

🔍 Key Findings

• Double-loop cerclage resisted the highest peak load (805 N) and maintained tension longer than twist (488 N) and single-loop (397 N) configurations.
• Double-loop cerclage sustained 500,000 cycles at 60–80% of peak load in some cases without loosening, outperforming other types.
• Twist knots loosened rapidly, often within 10 cycles even at low loads (100–390 N).
• Single-loop knots performed better than twist, with partial resistance up to 100,000 cycles at 160 N, but showed wide variability.
• All loosening occurred before wire breakage, indicating clinical failure would happen from slack, not fracture.
• Double-loop cerclage had highest initial tension (323 N) compared to single-loop (124 N) and twist (69 N).
• Fatigue limit was not identified for twist, since they all loosened early at even 20% of peak load.
• Clinical recommendation: double-loop cerclage is best for resisting repeated subfailure loading, ideal for fissure prevention or fragment stabilization.

🔍 Key Findings

• External skeletal fixation (ESF) was successfully applied to a variety of pelvic fracture types in cats, including sacroiliac luxations and ilial body fractures.
• All fractures achieved radiographic union within 9 weeks, even in comminuted or complex configurations.
• No intraoperative or long-term complications were reported during the study period.
• Implant loosening was observed radiographically in 13% of cases, with 8% of pins found to be loose at frame removal.
• ESF enabled indirect fracture reduction using components as handles, with a limited open approach minimizing soft tissue disruption.
• No iatrogenic neurological deficits were observed, supporting safe pin placement near neurovascular structures, although some cats presented with pre-existing neurologic signs.
• No cases required revision surgery, and all cats underwent stabilization solely with ESF as per study inclusion criteria.
• Postoperative hospitalization ranged from 2 to 5 days, though no comparison to other fixation types was evaluated.

🔍 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.

🔍 Key Findings

• Microvascular density at the site of foreign body obstruction was significantly lower in obstructed dogs compared to healthy controls.
• PBR (perfused boundary region) was paradoxically lower in obstructed dogs, indicating that PBR may not reliably correlate with tissue viability in this context.
• No significant difference in microvascular perfusion between subjectively viable vs nonviable intestines, suggesting subjective assessment is unreliable.
• No difference in perfusion parameters between handsewn and stapled enterectomies, indicating both techniques preserve vascular health equally.
• Stapled enterectomy using green TA staples is safe and did not impair intestinal perfusion at the anastomosis site.
• SDF videomicroscopy is feasible intraoperatively and can differentiate healthy from diseased intestine in dogs.
• Surgeons' subjective evaluations led to potentially unnecessary enterectomies, as microvascular parameters did not differ.
• No cases of dehiscence or mortality, suggesting both surgical approaches are effective when applied properly.

🔍 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.

🔍 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.

🔍 Key Findings

• 3D-printed drill guide technique (3D-DGT) resulted in fewer suboptimal screw placements than minimally invasive osteosynthesis (MIO) (7.14% vs 42.85%), though not statistically significant.
• Entry point translation (EPT) in the dorsoventral direction was significantly lower with 3D-DGT compared with MIO (p = .009).
• Maximum angular screw deviation (MASD) did not differ significantly between 3D-DGT and MIO in dorsal or transverse planes.
• Ventral cortical breach was the most common error with both techniques, more frequent with MIO.
• Achievement of >60% sacral bone purchase was more consistent with 3D-DGT (92.9%) than with MIO (64.3%).
• Modified Gras grade distribution was similar between techniques, with most screws graded as secure (“a” or “b”).
• 3D-DGT required substantially longer preoperative planning time than MIO (median 34 vs 8.5 minutes).
• Both techniques demonstrated overall acceptable accuracy, emphasizing the importance of CT-based planning and assessment.

🔍 Key Findings

• Short working length constructs had significantly higher stiffness and lower strain than long constructs in compression bending (p = 0.0172).
• In tension bending, short constructs also had higher precontact stiffness and lower strain, but this reversed after transcortical contact (~150 N).
• Transcortical contact increased stiffness only in long constructs, producing a bilinear load-displacement curve.
• Postcontact stiffness was higher in long constructs, but this may not reflect clinical benefit due to risks of high interfragmentary strain.
• Short working length reduced strain at multiple ROIs under both loading conditions, including over fracture gap (Tables 1–3).
• Increased working length promoted stress concentration and deformation, especially in compression bending.
• In vitro benefits of long constructs (via contact stability) may not translate to healing, as repetitive loading could increase plate strain and bone resorption.
• Plate strain was effectively mapped using 3D digital image correlation, confirming regional strain differences between configurations.

🔍 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.