🔍 Key Findings

• Plate–Pin TTT fixation resolved MPL in 64/65 stifles with low recurrence (1.5%) and good lameness outcomes postoperatively.
• Complication rate was 21.5% (14/65 stifles), mostly minor (57%); major issues included pin migration, fracture, or capsular failure.
• Pin-related issues accounted for 8 of 20 total complications, highlighting implant refinement is needed.
• No avulsions, TT fixation failures, or luxation recurrence occurred in cases where surgical technique was followed precisely.
• Surgical deviations increased complication risk 11.3× (p < 0.05), suggesting adherence to protocol is critical.
• Single-session bilateral MPL surgery had comparable complication rate (3/20) to unilateral surgery (11/45).
• Screw breakage occurred in 3 cases, suggesting at least 3 screws may be needed for secure TT fixation.
• Authors suggest temporary pin fixation and later removal may reduce complications, though prospective studies are needed.

🔍 Key Findings

• Accurate femoral isometric placement was achieved in 63% of cases, significantly more with SwiveLock (78.6%) than FASTak (38.9%).
• Inaccurate placement was associated with increased internal tibial rotation at follow-up (p = .009), suggesting potential implant failure.
• Pivot shift grade improved in 90.9% of stifles postoperatively, regardless of implant positioning accuracy.
• SwiveLock implants had a faster learning curve and higher placement accuracy than FASTak.
• Higher patient weight was linked to more accurate implant placement (p = .012), likely due to easier anatomical landmark identification.
• No correlation found between implant type or positioning accuracy and final pivot shift grade at 6 weeks.
• Minor and major complications were low and not significantly different between implant types.
• A simplified 2-grade pivot shift system was proposed for clinical use (Grade 1: glide, Grade 2: clunk), aiding intraoperative decision-making.

🔍 Key Findings

• Dogs with MPL had significantly shallower femoral trochlear grooves compared to controls, based on CT-measured femoral trochlear groove angle (FTGA).
• FTGA >134° in small breeds (SB) and >128° in medium/large breeds (MLB) were associated with MPL and can serve as surgical thresholds for considering trochleoplasty.
• FTA and FTRIA measurements were less reliable, showing lower sensitivity/specificity than FTGA.
• Inter-rater reliability for FTGA was excellent (ICC > 0.9), supporting its use in clinical decision-making.
• FTGA differed significantly between SB and MLB dogs, suggesting anatomical variation influences MPL predisposition.
• Dogs with MPL but with FTGA below threshold may not benefit from trochleoplasty, supporting individualized surgical planning.
• CT provides more precise and reproducible evaluation of trochlear morphology than radiography or ultrasound.
• The study introduces a CT protocol using P25 and P50 reference points for consistent FTGA measurement.

🔍 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.

🔍 Key Findings

Synovitis was present in 100% of canine stifles with CCL disease (n = 163).

The most frequent severity score was 3/5 (55.2%), followed by 4/5 (24.5%).

Higher synovitis scores were significantly associated with:

• Higher median cartilage scores (p = .042, OR = 2.1 per unit increase)
• Longer duration of clinical signs (p < .001, OR = 1.27 per month)

Bodyweight (p = .083) and sex (p = .17) were not statistically significant in multivariable analysis.

Bucket handle meniscal tears were not associated with synovitis severity.

Clinical implication: Earlier intervention may help reduce synovitis and slow OA progression.

🔍 Key Findings

• TPLO with the contoured saw guide achieved more accurate osteotomy angles for both inclination and torsion in bone models and cadaveric limbs (p < .05).
• Medial cortical damage was significantly lower with the contoured guide (247 vs. 1866 pixels in bone models; p < .001).
• No significant difference in eccentricity (distance between actual and intended osteotomy center) was found between groups.
• Postoperative tibial plateau angle (TPA) was similar between groups (6.4° vs. 7.6°; p = .15), though both were slightly higher than the target of 6°.
• Deviation in medial mechanical proximal tibial angle (mMPTA) showed no significant group difference; valgus deformity occurred in both.
• Osteotomy and device application times were similar between the contoured guide and jig-assisted TPLO.
• The contoured guide eliminated the need for proximal jig pin, potentially reducing intra-articular pin risk.
• The guide's multiple pin fixation system improved stability and alignment, supporting safer osteotomy on curved tibial surfaces.

🔍 Key Findings Summary

• 16 dogs (18 stifles) with CrCL rupture and TPA >34° were treated using the DCTPLO
• Mean TPA correction: from 39.4° to 6.3°
• Bone union at 60 days in 17/18 stifles; remaining healed by 90 days
• Minor complications (e.g., small wedge gaps) in 2/18 stifles — no major complications
• Patellar ligament thickening seen in 16/18 stifles but no clinical signs noted
• The technique enabled safer reduction with less risk of tibial crest fracture vs. conventional TPLO

🔍 Key Findings

• 3D CT volume rendering and CAL measurement successfully guided correction of femoral and tibial torsion in dogs with patellar luxation (PL).
• Physiological patellar tracking was restored in 100% (22/22) of cases after detorsional osteotomy.
• 94% of dogs (17/18) had either full or acceptable functional outcomes post-surgery.
• CAL-based correction was accurate in 19/22 cases, confirming reliability of the measurement technique.
• Complication rate was 45%, with major complications in 2/22 cases—both involved combined femoral and tibial osteotomies.
• Combined femoral and tibial osteotomies in the same limb were linked to a higher risk of complications and poorer outcomes.
• Diaphyseal osteotomies offered more implant space, but metaphyseal locations were associated with faster bone healing.
• Use of a TPLO jig or goniometer was not essential—CAL-based bone marking was sufficient in most cases.

🔍 Key Findings

• 65% of stifles with patella luxation and intact CCLs had increased radiographic soft tissue opacity
• Weight and radiographic OA were significantly associated with increased opacity (p = .0029 and p = .0143)
• Each 1 kg increase in weight increased the odds of opacity by 10%
• Grade of patella luxation, age, and muscle atrophy were not significantly associated with increased opacity
• 19% of dogs with long-term follow-up developed a CCL rupture post-patella surgery, 50% of those had opacity at initial presentation
• Radiographic opacity alone should not be interpreted as CCL disease in dogs with patella luxation
• Radiographic findings likely represent effusion or synovial hyperplasia, not CCL pathology
• Arthrotomy was used to confirm CCL integrity at surgery, but arthroscopy could provide better sensitivity

🔍 Key Findings

• All four techniques achieved TPA <14°, meeting the threshold for acceptable surgical correction in eTPA cases.
• Group A (CBLO + CCWO) and Group D (PTNWO) showed highest accuracy in achieving target TPA values.
• Group B (TPLO + CCWO) resulted in significant tibial shortening compared to other techniques.
• Group A caused the greatest cranial mechanical axis shift, while Group B caused the least.
• Group C (mCCWO) resulted in consistent under-correction of TPA, despite aiming for 0°.
• Modified or neutral wedge osteotomies (Groups C and D) had minimal effect on tibial length, making them suitable when preservation is important.
• All techniques involved mechanical axis shifts, highlighting the importance of preoperative planning to minimize morphologic disruption.
• Supplemental fixation was standard for all procedures to reduce risks such as tibial tuberosity fracture and plateau leveling loss.