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Peschiera Borromeo, Italy

Petazzoni M.,Clinica Veterinaria Milan Sud | Urizzi A.,Clinica Veterinaria Dott. | Verdonck B.,Huisdierchirurgie | Jaeger G.,VCA Newark
Veterinary and Comparative Orthopaedics and Traumatology | Year: 2010

This report describes the Fixin internal fixator systema, a fracture fixation device characterised by a locking conical coupling between screw heads and titanium alloy inserts that are screwed into a stainless steel plate construct. The mechanical principles, implants, instruments and surgical technique are discussed. © Schattauer 2010. Source

Petazzoni M.,Clinica Veterinaria Milan Sud | Nicetto T.,Diagnostica Piccoli Animali
Veterinary and Comparative Orthopaedics and Traumatology | Year: 2014

This report describes the treatment of traumatic carpal hyperextension in a giant breed dog by pancarpal arthrodesis using a custom-made Fixin locking plate, created with the aid of a three-dimensional plastic model of the bones of the antebrachium produced by rapid prototyping technology. A three-year-old 104 kg male Mastiff dog was admitted for treatment of carpal hyperextension injury. After diagnosis of carpal instability, surgery was recommended. Computed tomography images were used to create a life-size three-dimensional plastic model of the forelimb. The model was used as the basis for constructing a customized 12-hole Fixin locking plate. The plate was used to attain successful pancarpal arthrode-sis in the animal. Radiographic examination after 74 and 140 days revealed signs of osseous union of the arthrodesis. Further clinical and radiographic follow-up examination three years later did not reveal any changes in implant position or complications. © Schattauer 2014. Source

Petazzoni M.,Clinica Veterinaria Milan Sud | Briotti F.,Ambulatorio Veterinario Venini
Veterinary and Comparative Orthopaedics and Traumatology | Year: 2015

This report describes a case of a solitary unicameral patellar bone cyst in a young dog. A five-month-old, male Dobermann Pinscher dog was referred for a 10-day left hindlimb lameness. A mild swelling of the peripatellar soft tissues of the left patella was detected upon physical examination. Signs of pain were elicited upon direct palpation of the patella. Radiographic examination revealed an oval radiolucency within the medullary cavity at the base of the left patella. Radiographic examination, arthroscopy, and histopathology findings supported the diagnosis of a benign patellar bone cyst. The condition was treated by surgical curettage and autogenous bone graft harvested from the ipsilateral proximal tibia. Clinical signs, including lameness and signs of pain upon deep palpation, disappeared three weeks after surgery. Follow- up re-evaluation five years after surgery revealed no recurrence of the cyst and the patient was asymptomatic. © 2015 Schattauer. Source

Petazzoni M.,Clinica Veterinaria Milan Sud | Nicetto T.,Diagnostica Piccoli Animali
Veterinary and Comparative Orthopaedics and Traumatology | Year: 2015

Objectives: To describe the use of the Fixin locking plate system for stifle arthrodesis in dogs and to retrospectively report the clinical and radiographic outcomes in six cases. Materials and methods: Medical records of dogs that had arthrodesis with the Fixin locking plate system were reviewed. For each patient, data pertaining to signalment and implant used were recorded. Plate series and thickness, number of screws placed, number of cortices engaged, and screw diameters were also recorded. The outcome was determined from clinical and radiographic followups Radiographic outcomes assessed included the measurement of the postoperative femoral-tibial angle in the sagittal plane. Results: Six dogs met the inclusion criteria for the study. Mean body weight was 13 kg (range: 3 - 34 kg). Radiographic follow-up (mean: 32 weeks, range: 3 - 52 weeks) was available for all dogs. In one case, an intraoperative complication occurred. In another case, a tibial fracture occurred 20 days after surgery. All arthrodeses healed and no implant complication was detected although all cases had mechanical lameness. Clinical significance: Stifle arthrodesis can be performed successfully using a Fixin locking plate system. © 2015 Schattauer. Source

Petazzoni M.,Clinica Veterinaria Milan Sud
Veterinary and Comparative Orthopaedics and Traumatology | Year: 2016

Objective: To report on a novel surgical procedure to treat a long segmental tibial defect in a five-year-old 5 kg spayed female Main Coon cat using transverse distraction osteogenesis in the contralateral tibia to create a free autograft. Methods: A long free bone segment was created from the cranial half of the normal tibia. A circular external fixator was constructed to give the segment 7 mm of cranial distraction. After 42 days the widened section of tibial bone was removed and transferred to the defect in the contralateral tibia. Locking plates were used to stabilize the graft and to protect the donor tibial sites. Results: By 27 months, both tibias were healed, all implants had been removed, function was excellent, and the overall limb length was 90% of the normal side. Clinical relevance: Compared with longitudinal distraction osteogenesis in long bone defects, transverse distraction of a normal bone requires a significantly shorter distraction distance to produce a similar amount of bone. Thus, distraction time is reduced, with less likelihood of significant soft tissue damage. New bone may be more reliably regenerated in a normal limb due to better tissue health, and native bone may be more readily incorporated than allografts in compromised sites. Disadvantages include the increased morbidity, as well as the risk and expense associated with involvement of a normal limb. © Schattauer 2016. Source

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