VCOT July 2025 – Ortho Part 2: Tibial Torsion in MPL & The Future of Hip Resurfacing

VCOT January 2026 – Ortho Part 1: TPLO Plate Design & Patient-Specific Atlantoaxial Implants

In this Simini Small Animal Surgery Podcast episode, we kick off our orthopedic coverage from the January 2026 issue of Veterinary and Comparative Orthopaedics and Traumatology (VCOT) by exploring how implant design can influence surgical success long before the patient leaves the operating room.  One study demonstrates that subtle differences in TPLO plate geometry can dramatically affect interfragmentary compression and construct stability, while the second introduces a patient-specific 3D-printed implant that could transform the treatment of atlantoaxial instability in toy-breed dogs. In this episode: ✅ Miraldo et al. — Compared three commonly used 3.5 mm TPLO locking plate systems to determine how plate design affects interfragmentary compression across the osteotomy. Using pressure-sensitive film, the authors found that the Biocurve plate generated the highest and most uniform compression, particularly across the cranial aspect of the osteotomy, owing to its opposing dynamic compression slot orientation. In contrast, the Synthes plate produced the lowest compression, highlighting that implant geometry—not just surgical technique—plays a major role in achieving stable primary bone healing. ✅ Peres Cabrera et al. — Presented a patient-specific 3D-printed titanium implant for dorsal stabilization of atlantoaxial instability (AAI) in dogs. Designed from CT imaging and optimized using finite element analysis, the implant incorporates an integrated drill guide that directs screw placement while allowing up to 12 degrees of variable-angle adjustment. Mechanical testing demonstrated excellent rigidity, with maximum implant stress remaining well below the titanium alloy's yield strength and only 0.13 mm of displacement under supraphysiologic loading. The design eliminates the need for polymethylmethacrylate (PMMA), reducing the risks of thermal injury, infection, and implant-related complications.  Together, these studies reinforce a simple but powerful lesson: the smartest implant isn't always the strongest—it's the one designed to help surgeons consistently achieve the best biomechanics with the greatest precision. 🎓 Journal Articles Discussed * Miraldo et al. — Tibial Plateau Leveling Osteotomy Plate Design Influences Interfragmentary Compression: An In Vitro Study * Peres Cabrera et al. — Development and Finite Element Analysis of a Patient-Specific Implant for Atlantoaxial Joint Stabilization via Dorsal Approach in Dogs 📚 From the January 2026 issue of VCOT 🎁 Want to learn more about Simini Protect Lavage or request a sample? Learn More:  www.simini.com [http://www.simini.com] Request a Sample:  https://www.simini.com/evaluation-kit [https://www.simini.com/evaluation-kit]

VCOT November 2025 – Ortho: Cementless THR, 3D-Printed SI Guides & Tibial Tuberosity Avulsion Outcomes

In this Simini Small Animal Surgery Podcast episode, we conclude our orthopedic coverage from the November 2025 issue of Veterinary and Comparative Orthopaedics and Traumatology (VCOT) by exploring three studies that examine how precision, technology, and long-term adaptation influence orthopedic success. From a novel approach to cementless total hip replacement, to patient-specific drill guides for feline sacroiliac luxation repair, and the surprising long-term outcomes of tibial tuberosity avulsion fractures, these studies challenge conventional assumptions about fixation, healing, and postoperative function. In this episode: ✅ Arias et al. — Evaluated an undersized cementless femoral stem coated with biphasic calcium phosphate (BCP) as an alternative to traditional cemented total hip replacement. While dogs with undersized stems experienced slower early recovery and mild transient lameness, functional gait analysis demonstrated equivalent outcomes by four months postoperatively. The BCP coating promoted biological fixation through osteoconduction and osteoinduction, potentially reducing the risk of intraoperative femoral fissures associated with aggressive press-fit stem placement.  ✅ Scortea et al. — Compared 3D-printed drill guide technology with fluoroscopy-guided minimally invasive osteosynthesis (MIO) for feline sacroiliac luxation repair. Patient-specific guides achieved 92.9% adequate sacral bone purchase, compared with 64.3% for traditional MIO, while dramatically reducing cortical breaches and screw malposition. Although the guides required additional planning time and an open surgical approach, the study demonstrated substantial improvements in implant accuracy and safety.  ✅ Zweig et al. — Investigated long-term outcomes following tibial tuberosity avulsion fractures (TTAF) after skeletal maturity. Surgical fixation resulted in dramatic radiographic changes, including a 15–19° reduction in tibial plateau angle and distal patellar displacement. Despite these alterations, every surgically treated dog achieved excellent functional outcomes with no lameness or instability. In contrast, one-third of conservatively managed dogs developed severe medial patellar luxation, reinforcing the importance of maintaining extensor mechanism alignment during healing.  Together, these studies remind us that orthopedic success is not always defined by perfect anatomy—but by achieving durable function through thoughtful planning and biologic adaptation. 🎓 Journal Articles Discussed * Arias et al. — Kinetic and Kinematic Gait Analyses of Dogs with Undersized Cementless Stems (Biphasic Calcium Phosphate Coated) versus Cemented in Total Hip Replacement * Scortea et al. — Comparative Analysis of 3D-Printed Drill Guides and Minimally Invasive Osteosynthesis in Feline Sacroiliac Luxation: A Cadaveric Study * Zweig et al. — Treatment Outcome and Radiographic Appearance of Healed Tibial Tuberosity Avulsion Fractures in Skeletally Mature Dogs: 21 Cases (2016–2023)  📚 From the November 2025 issue of VCOT 🎁 Want to learn more about Simini Protect Lavage or request a sample? Learn More:  www.simini.com [http://www.simini.com] Request a Sample:  https://www.simini.com/evaluation-kit [https://www.simini.com/evaluation-kit]

VCOT September 2025 – Ortho Part 2: Toy Breed Menisci & Growth-Guided Tibial Plateau Correction

In this Simini Small Animal Surgery Podcast episode, we continue our orthopedic coverage from the September 2025 issue of Veterinary and Comparative Orthopaedics and Traumatology (VCOT) by examining how biology and biomechanics shape long-term orthopedic outcomes in small dogs. One study challenges assumptions about meniscal injury prevalence in toy-breed dogs with cranial cruciate ligament disease, while the second explores how growth itself may become a powerful ally in the treatment of proximal tibial physeal fractures. In this episode: ✅ Kikuchi et al. — Used arthroscopy to evaluate the incidence of medial meniscal injury in toy-breed dogs weighing 5 kg or less with cranial cruciate ligament rupture. The authors identified meniscal injury in 36.3% of affected stifles, demonstrating that significant meniscal pathology remains common even in very small patients. Yorkshire Terriers showed particularly high rates of complete cruciate rupture and meniscal injury, with over 55% of Yorkies affected. The study highlights the importance of thorough meniscal assessment, especially in dogs with complete ruptures, higher relative body weight, and severe lameness.  ✅ Turner et al. — Evaluated postoperative changes in tibial plateau angle (TPA) following repair of Salter-Harris Type I and II proximal tibial physeal fractures. Across 32 dogs, the authors observed a mean 5.89° reduction in TPA during early healing, demonstrating that significant dynamic correction occurs after surgery. Interestingly, adding a tibial tuberosity tension band did not significantly affect correction, suggesting that cranially placed K-wires alone create sufficient temporary physeal tethering to guide growth and level the tibial plateau over time. Together, these studies remind us that successful orthopedic surgery requires understanding not only the injury itself, but also how biology continues to influence outcomes long after the procedure is complete. 🎓 Journal Articles Discussed * Kikuchi et al. — Incidence of Medial Meniscus Injury Detected by Arthroscopy in Toy Breed Dogs (≤5 kg) with Cranial Cruciate Ligament Rupture * Turner et al. —Tibial Plateau Angle Changes following Repair of Salter–Harris Type 1 and 2 Fractures in Dogs 📚 From the September 2025 issue of VCOT 🎁 Want to learn more about Simini Protect Lavage or request a sample? Learn More:  www.simini.com [http://www.simini.com] Request a Sample:  https://www.simini.com/evaluation-kit [https://www.simini.com/evaluation-kit]

VCOT September 2025 – Ortho Part 1: Supercutaneous Plating & 3D-Printed HIF Guides

In this Simini Small Animal Surgery Podcast episode, we continue our orthopedic coverage from the September 2025 issue of Veterinary and Comparative Orthopaedics and Traumatology (VCOT) by exploring a common surgical objective: maximizing stability while minimizing surgical trauma. One study evaluates an innovative fracture fixation strategy that combines the biological advantages of external skeletal fixation with the mechanical benefits of locking plate technology. The second investigates whether 3D-printed patient-specific guides can improve the accuracy and safety of transcondylar screw placement in dogs with humeral intracondylar fissures. In this episode: ✅ İnal et al. — Evaluated supercutaneous locking plates (SLPs) for the management of non-articular radial, ulnar, and tibial fractures in dogs and cats. Applied externally above the skin using locking screws, SLPs achieved a median healing time of approximately 50 days, with most patients bearing weight within 1–2 days postoperatively. Although 24% of cases developed minor screw-track discharge, no implants required removal and all complications were managed conservatively. The findings suggest SLPs may provide a low-profile alternative to traditional external fixators while preserving fracture biology and minimizing soft tissue disruption.  ✅ Kershaw et al. — Investigated the use of 3D-printed patient-specific guides (PSGs) for transcondylar screw placement in canine humeral intracondylar fissures. Using a novice surgeon model in paired cadaver limbs, PSGs produced significantly more accurate entry and exit points than traditional aiming devices. Most notably, three of seven screws placed with standard aiming devices would have violated the joint, whereas zero articular penetrations occurred with PSG-guided placement. The study highlights the potential for patient-specific technology to improve surgical precision and reduce catastrophic technical errors.  Together, these studies demonstrate that advances in orthopedic surgery increasingly focus on working smarter rather than working bigger—using technology and biomechanics to achieve safer, more predictable outcomes. 🎓 Journal Articles Discussed * Inal et al. — Minimally Invasive Radial–Ulnar and Tibial Fracture Management with Supracutaneous Locking Plates in Dogs and Cats * Kershaw et al. — Patient-specific Guides Improve the Accuracy and Safety of Transcondylar Screw Placement—A Cadaveric Study in the Canine Humerus 📚 From the September 2025 issue of VCOT 🎁 Want to learn more about Simini Protect Lavage or request a sample? Learn More:  www.simini.com [http://www.simini.com] Request a Sample:  https://www.simini.com/evaluation-kit [https://www.simini.com/evaluation-kit]

VCOT July 2025 – Ortho Part 2: Tibial Torsion in MPL & The Future of Hip Resurfacing

In this Simini Small Animal Surgery Podcast episode, we continue our orthopedic coverage from the July 2025 issue of Veterinary and Comparative Orthopaedics and Traumatology (VCOT) by examining how a deeper understanding of anatomy and biomechanics can fundamentally change surgical planning.  One study introduces a novel method for evaluating tibial torsional deformity in dogs with medial patellar luxation, while the second explores a promising bone-preserving alternative to traditional total hip replacement. In this episode: ✅ Isono et al. — Investigated tibial torsional malalignment in small-breed dogs with medial patellar luxation (MPL) using advanced CT analysis. The authors introduced the Proximal Tibia Metatarsal Angle (PTMTA), a new measurement designed to quantify rotational deformity throughout the entire hind limb. Normal dogs demonstrated a PTMTA of approximately 7 degrees, while Grade IV MPL patients averaged 32.8 degrees, with some exceeding 40 degrees. The findings suggest that severe MPL may be driven by substantial tibial rotational deformity, emphasizing the importance of evaluating the entire limb when planning corrective osteotomies.  ✅ Perez Neto et al. — Evaluated a novel short-stem hip resurfacing arthroplasty (HRA) implant as a potential alternative to conventional total hip replacement. Using cadaveric femurs from large-breed dogs, the authors demonstrated that although the implant reduced maximum load capacity by approximately 22%, implanted femurs still withstood forces exceeding six times body weight before failure. Importantly, fractures occurred in the same location as intact femurs, suggesting that the implant preserved natural load transmission patterns while maintaining substantial mechanical strength.  Together, these studies demonstrate that better orthopedic outcomes begin with understanding the underlying mechanics of the limb—and sometimes preserving anatomy may be just as important as replacing it. 🎓 Journal Articles Discussed * Isono et al. — Tibial Torsion Malalignment in Small Dogs with Medial Patellar Luxation * Perez Neto et al. — Biomechanical Evaluation of a Femoral Implant for Hip Resurfacing Arthroplasty in Dogs: An Ex Vivo Study 📚 From the July 2025 issue of VCOT 🎁 Want to learn more about Simini Protect Lavage or request a sample? Learn More:  www.simini.com [http://www.simini.com] Request a Sample:  https://www.simini.com/evaluation-kit [https://www.simini.com/evaluation-kit]