🔍 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

🔍 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).

🔍 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

🔍 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).

🔍 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

Design: In vitro study on cadaveric femurs (n=21) with basilar femoral neck fractures stabilized using 2 vs 3 titanium cannulated screws.

Stiffness: Control > 3-screw > 2-screw (674 > 120 > 90 N/mm).

Yield Load: 3-screw (586 N) > 2-screw (303 N); both < intact femur (2692 N).

Displacement: No difference across groups.

Complication: 3-screw technique more demanding; higher risk of cortical perforation, especially with narrow femoral necks.

Failure Mode: Dislodgement of femoral head + screw shaft bending.

Conclusion: 3 screws = stronger construct than 2 screws. Clinical implications need further study.

🔍 Key Findings

• Major complications occurred in 25.6% of limbs treated with PAUL, including non-union, implant failure, and infection requiring revision surgery.
• Increased body weight was significantly associated with a higher risk of complications (7% increased risk per additional kg; p = .04).
• Post-operative radiographic assessment was unreliable in predicting complications; inter-observer agreement was poor (kappa ≤ 0.12).
• Expert evaluation of implant or reduction errors had low predictive value (k < 0.2) for postoperative complications.
• Common major complications included non-union (6 limbs), screw breakage, and surgical site infections.
• Implant removal was required in 11.5% of limbs, mostly due to non-union or infection.
• Being a Labrador appeared protective on univariate analysis, but not on multivariate analysis after adjusting for weight.
• Radiographs showing suboptimal plate placement or osteotomy reduction did not reliably correlate with actual complication occurrence.

🔍 Key Findings

• All dogs (11/11) showed improved radiohumeral articulation postoperatively, confirmed arthroscopically.
• Median shortening: radioulnar (3.2 mm), humeroradial (1.8 mm), humeroulnar (1.2 mm).
• Median lameness score improved from 2/4 to 1/4 by final follow-up.
• Bone healing achieved in a median of 8 weeks (range: 4–14 weeks).
• No major complications; minor issues included 1 screw loosening and 1 superficial infection.
• Subjective function was graded full in 4 dogs, acceptable in 7.
• Arthroscopy enabled accurate dynamic joint assessment, preferred over static radiographs.
• Use of both orthopedic wire and plating provided secure fixation and improved outcomes.

🔍 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

• 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.