🔍 Key Findings

• Medial meniscus injury (MMI) occurred in 36.3% of stifles with CrCLR in toy breed dogs (<5 kg)
• Complete CrCLR was significantly associated with MMI (15.3% of complete vs. 3.4% of partial)
• Severe lameness (grade 3) increased the likelihood of MMI compared to mild lameness (grade 1)
• Higher body weight, even within the toy breed range, was positively associated with MMI
• Yorkshire Terriers had the highest MMI incidence (55.6%), but this was not a significant independent factor due to multicollinearity
• Arthroscopy identified more meniscal damage (including small radial tears and bucket-handle lesions) than gross examination might detect
• MMI was classified as mild (radial tear) or severe (bucket-handle or flap) with implications for partial meniscectomy
• Arthroscopy was used in all cases, underscoring its utility in small-breed stifle assessment

🔍 Key Findings

• CBLO reduced tibial plateau angle (TPA) from a mean of 28.1° to 9.7°, aligning with its goal of flattening the tibial slope.
• CBLO eliminated cranial tibial translation (CTT) following CCL transection and meniscal release at all angles except 140° without hamstring load.
• Hamstring loading (20% quadriceps load) significantly reduced or delayed the onset of CTT, improving stifle stability.
• Medial meniscus was confirmed as a secondary stabilizer; its release (MMR) caused more CTT than CCLx alone.
• PTA (patellar tendon angle) increased with joint extension; CBLO shifted the PTA curve lower and parallel to intact values, suggesting effective flexion of the joint.
• Combined CBLO and hamstring loading resulted in the most stable joints, especially from 50° to 135° joint angles.
• Residual CTT occurred in CBLO-only limbs at higher extension angles (e.g., 140°), but hamstring load mitigated this.
• Stifle stability post-CBLO is multifactorial, depending on joint angle, meniscal integrity, and hamstring activation.

🔍 Key Findings

• Medial meniscus injury (MMI) occurred in 36.3% of stifles with CrCLR in toy breed dogs (<5 kg)
• Complete CrCLR was significantly associated with MMI (15.3% of complete vs. 3.4% of partial)
• Severe lameness (grade 3) increased the likelihood of MMI compared to mild lameness (grade 1)
• Higher body weight, even within the toy breed range, was positively associated with MMI
• Yorkshire Terriers had the highest MMI incidence (55.6%), but this was not a significant independent factor due to multicollinearity
• Arthroscopy identified more meniscal damage (including small radial tears and bucket-handle lesions) than gross examination might detect
• MMI was classified as mild (radial tear) or severe (bucket-handle or flap) with implications for partial meniscectomy
• Arthroscopy was used in all cases, underscoring its utility in small-breed stifle assessment

🔍 Key Findings

• Transecting the CCL remnant during TPLO did not reduce patellar ligament thickening (PLT) at any measured point (proximal, mid, distal).
• Transection also failed to reduce postoperative patellar ligament shortening (PLL) at 6 weeks.
• Both groups (transected vs non-transected) showed significant thickening and shortening, with greatest PLT increase at the midpoint.
• Increased PLT was positively correlated with tibial plateau rotation (p = 0.02) and postoperative TPA (p = 0.04).
• No correlation between TT-O (tibial tuberosity width index) and PLT, suggesting narrow osteotomies did not influence PLT in this population.
• Partial CCL rupture was not significantly protective; dogs with partial tears still developed ligament thickening.
• Post-TPLO mid-patellar ligament thickening may relate to Gelpi retractor placement and osteotomy mechanics rather than CCL status.
• Authors do not recommend CCL transection during TPLO to prevent desmitis, citing possible increased instability and degeneration.

🔍 Key Findings

• Fluoroscopy-guided osteotomy placement achieved a median postoperative TPA of 3° (range: 0–4.5°), showing excellent accuracy.
• The D1 measurement (from patellar ligament insertion to osteotomy exit) was more reproducible and accurate intraoperatively than D2.
• Median R1 value (D1-based) matched the intended 21 mm radius with only 0.5 mm deviation, while R2 deviated by 2.5 mm.
• Real-time fluoroscopy allowed dynamic limb positioning and reduced osteotomy placement variability.
• Intraoperative fluoroscopy reduced reliance on preoperative planning, especially in cases with difficult anatomy or positioning.
• Radiation exposure was minimal (avg. 3 images per case) and within safe limits using standard protection protocols.
• Study standardized to 21 mm blades and excluded dogs with developmental orthopedic conditions to reduce confounders.
• Targeting a lower postoperative TPA (3°) may reduce meniscal load and cranio-caudal instability, though long-term outcomes require further study.

🔍 Key Findings

Subject: 7-year-old Labrador underwent cementless total knee replacement (TKR) due to severe stifle OA.

Clinical function:

• Improved ROM from 90° pre-op to 120° post-op.
• Weight-bearing increased from toe-touching to 70% bodyweight by 6 weeks post-op.
• No visible lameness by 14 weeks.

Implant performance:

• No complications at any follow-up points.
• No osteolysis, loosening, or metallosis at 6-year necropsy.

Wear evaluation:

• Mild UHMWPE insert wear, localized to caudal edges.

Histologic findings:

• Robust osseointegration at implant-bone interface.
• Fibrous tissue only in areas lacking porous coating.

Conclusion:

• Cementless TKR demonstrated excellent 6-year survival and functional outcomes.
• Support for considering early surgical intervention in severe stifle OA.

🔍 Key Findings

• TPLO alone failed to neutralize rotational instability under tibial pivot compression (TPT), despite a negative TCT.
• TPLO combined with lateral augmentation (TPLO-IB) restored both craniocaudal and rotational stability to near-intact levels.
• Cranial tibial translation was 6× greater after TPLO vs intact stifles when tested with TPT (p < .001).
• No significant difference in cranial tibial translation or internal rotation between intact stifles and TPLO-IB group during TCT, eTPT, or iTPT.
• TPLO-IB did not overconstrain the stifle, avoiding excessive external rotation.
• External tibial rotation (eTPT) was more sensitive than TCT in detecting persistent instability after TPLO.
• Excellent intraobserver reliability for both eTPT and iTPT (ICC > 0.9).
• Study supports intraoperative use of TPT to identify cases needing additional rotational stabilization.

🔍 Key Findings

• Multidetector CTA had high sensitivity (up to 100%) and specificity (up to 96%) for detecting medial meniscal tears in dogs.
• Observer experience significantly influenced diagnostic accuracy, with more experienced observers showing higher agreement and better performance.
• Training effect was evident, as less experienced observers improved between first and second readings.
• Positive likelihood ratios ≥4.6 and negative likelihood ratios ≤0.08 were observed, suggesting CTA is clinically useful for confirming or ruling out meniscal injury.
• CTA allowed identification of full and partial thickness lesions, with good visualization in sagittal, transverse, and frontal reconstructions.
• Approximately 90% of menisci were correctly classified in second readings.
• No adverse reactions were noted from the contrast injection; sedation was used instead of general anesthesia.
• CTA was less invasive and potentially more cost-effective compared to arthroscopy, especially in settings without MRI access.

🔍 Key Findings

• Routine follow-up radiographs after MPL surgery influenced management in only 3% of asymptomatic cases.
• Isolated radiographic abnormalities were rare (3.3%) and even less likely to alter treatment unless accompanied by clinical concerns.
• Dogs with both radiographic changes and clinical/owner concerns had 32× higher odds of a management change (OR 32.16, P < .001).
• Lameness, NSAID use, or prior unplanned visits significantly increased the odds of altered post-op plans.
• Owner-reported concerns alone led to a change in only 1.6% of cases without corroborating clinical findings.
• Radiographic follow-up was deemed unnecessary in dogs without owner concerns or abnormal physical findings.
• Hands-on clinical exam remains critical, though video-based rechecks may aid triage in uncomplicated cases.
• The study supports selective radiographic follow-up, reducing unnecessary imaging, stress, and clinician workload.

🔍 Key Findings

• TPLO alone failed to neutralize rotational instability under tibial pivot compression (TPT), despite a negative TCT.
• TPLO combined with lateral augmentation (TPLO-IB) restored both craniocaudal and rotational stability to near-intact levels.
• Cranial tibial translation was 6× greater after TPLO vs intact stifles when tested with TPT (p < .001).
• No significant difference in cranial tibial translation or internal rotation between intact stifles and TPLO-IB group during TCT, eTPT, or iTPT.
• TPLO-IB did not overconstrain the stifle, avoiding excessive external rotation.
• External tibial rotation (eTPT) was more sensitive than TCT in detecting persistent instability after TPLO.
• Excellent intraobserver reliability for both eTPT and iTPT (ICC > 0.9).
• Study supports intraoperative use of TPT to identify cases needing additional rotational stabilization.