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Cueva LOB, Rahal SC, Fonseca-Alves CE, Bonatelli SP, Mamprim MJ, Francia CCDA, Burini CHP, Mesquita LR. Masquelet-Induced Membrane Characteristics in Chicken Radii Bone Defects. J Avian Med Surg 2021; 35:51-59. [PMID: 33892589 DOI: 10.1647/1082-6742-35.1.51] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study evaluated the formation of a Masquelet-induced membrane created through the formation of segmental bone defects in the radii of 15 healthy domestic chickens. When the chickens were in a surgical plane of anesthesia, a 1.5-cm segmental bone defect was produced in the left radius, which was subsequently filled with a bone cement spacer during its pasty polymerization phase. The bone defects were evaluated through radiographic imaging immediately after surgery and at 7, 15, 21, and 30 days after the creation of the bone defect. Five birds were euthanatized at 15, 21, and 30 days postoperatively for histological evaluation of the bone defect site. Immediate postoperative radiographic examination of the radii showed the presence of bone cement, which occupied the segmental bone defect. Thirty days after the surgical procedure, the presence of new bone formation at the fractured extremities was evident in the 5 remaining chickens. Histologically, the induced-membrane had 3 distinct zones at 15 days postoperatively, including 1 cell layer in contact with the bone cement spacer, 1 layer with collagen fibers, and 1 layer in contact with muscle, which was composed of disorganized connective tissue, active fibroblasts, and blood vessels. Twenty-one days after surgery, the zones were less defined, and there were metaplastic areas comprising cartilage and bone. Postoperative, diffuse mineralization of the membrane was observed 30 days after the surgical procedure. Formation of the induced membrane was observed during all periods of evaluation. The best histological characteristics for the Masquelet-induced membrane were detected 15 days after the formation of the bone defect, suggesting this would be the optimal time for second-stage surgery for bone reconstruction.
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Affiliation(s)
- Luis O B Cueva
- Departments of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil
| | - Sheila C Rahal
- Departments of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil,
| | - Carlos E Fonseca-Alves
- Departments of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil
| | - Shayra P Bonatelli
- Animal Reproduction and Veterinary Radiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil
| | - Maria J Mamprim
- Animal Reproduction and Veterinary Radiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil
| | - Camila C D A Francia
- Department of Anatomy, Institute of Biosciences, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil
| | - Caio H P Burini
- Departments of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil
| | - Luciane R Mesquita
- Departments of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Rubião Júnior s/n, 18618970 Botucatu, Brazil
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Contralateral bone widening and transfer for limb sparing in a cat. Vet Comp Orthop Traumatol 2016; 29:174-80. [PMID: 26805545 DOI: 10.3415/vcot-15-04-0068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 11/12/2015] [Indexed: 11/17/2022]
Abstract
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.
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Treatment of antebrachial and crural septic nonunion fractures in dogs using circular external skeletal fixation: a retrospective study. Vet Comp Orthop Traumatol 2014; 27:297-305. [PMID: 24999089 DOI: 10.3415/vcot-13-08-0102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 05/10/2014] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To evaluate the outcome of treatment of antebrachial and crural septic non-union fractures in dogs using circular external skeletal fixation (CESF), and to document the type and frequency of complications associated with this technique. METHODS The medical records of all dogs with infected antebrachial and crural non-union fractures treated using the methods of Ilizarov at the Department of Animal Pathology of the University of Turin between 2006 and 2011 were retrospectively reviewed. Only dogs in which radiographic and clinical assessment were available at the time of CESF removal were included in the study. RESULTS Twenty-three dogs met the inclusion criteria. Twenty nonunion fractures treated with CESF healed and three did not. The latter three cases underwent amputation of the affected limb. In the 20 dogs that achieved bone union, six had minor complications and five had major complications. The mid-term outcome was judged to be excellent (n = 11), good (n = 6), fair (n = 2), or poor (n = 4). CONCLUSIONS The results of this study support the use of CESF for the management of antebrachial and crural septic nonunion fractures in dogs. Union was achieved in the majority of dogs and the complication rate was acceptable, considering the severity of the nonunion fractures that were managed in this fashion.
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