Application and Postoperative Management of External Skeletal Fixators

Aron, Dennis N.; Dewey, Curtis W.

doi:10.1016/s0195-5616(92)50005-5

Cited by 47 publications

(61 citation statements)

References 8 publications

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“…Cabe salientar que a translação não impediu a consolidação das fraturas. Como referido por ARON & DEWEY (1992), a estabilidade suficiente para a demanda biomecânica pode ser mais importante que a estabilidade absoluta. O aumento do número de pinos transfixantes por segmento provavelmente evitaria a ocorrência de translação já que promove maior rigidez da montagem (McPHERRON et al, 1992).…”

Section: Discussionunclassified

“…A osteólise ao redor dos pinos externos, visualizada radiograficamente, correspondeu em três casos com a secreção aumentada no trato dos pinos. Embora o pino externo de perfil positivo permita melhor rigidez e maior fixação ao osso (ARON & DEWEY, 1992;PALMER et al, 1992;, teve como desvantagem a necessidade de aplicação de um pino intramedular de menor diâmetro.…”

Section: Mediana Q1 Q2unclassified

“…Apesar de os métodos utilizados não terem as características de consolidação de um método rígido como a placa (ARON & DEWEY, 1992;JOHNSON & HULSE, 2002), a pouca formação de calo ósseo sugere, como citado por JOHNSON et al (1998), fixação estável. O calo periosteal mais evidente, aliado ao maior tempo para consolidação, é indicativo que a fixação do grupo experimental I foi menos rígida que no grupo II.…”

Section: Mediana Q1 Q2unclassified

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Imobilização de fraturas femorais em gatos usando pino intramedular conectado ou não ao fixador esquelético externo

Rahal

Garib²,

Matsubara

et al. 2004

Cienc. Rural

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O trabalho teve por objetivo comparar a consolidação óssea e a função do membro, em 18 gatos com fraturas transversas femorais tratadas com pino intramedular e fixador esquelético externo tipo Ia (grupo I, n=9) ou com pino intramedular associado ao fixador externo em uma configuração "tie-in" (grupo II, n=9). Independente da configuração utilizada, após a remoção dos implantes, todos os animais apresentaram função normal do membro operado. Não houve diferença entre os grupos em relação à densidade mineral óssea do calo externo mensurada pela densitometria óptica por imagens radiográficas. O tempo para consolidação foi significativamente maior para as fraturas tratadas com pino intramedular e fixador tipo Ia. As fraturas que receberam a configuração "tie-in" tiveram menos proliferação de calo ósseo.

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Section: Discussionunclassified

Section: Mediana Q1 Q2unclassified

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Imobilização de fraturas femorais em gatos usando pino intramedular conectado ou não ao fixador esquelético externo

Rahal

Garib²,

Matsubara

et al. 2004

Cienc. Rural

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“… İletişim (Correspondence)  +90 312 3170315  hbilgilitr@yahoo.com quadriceps muscle contracture, and in modern trauma management [1][2][3] .…”

Section: Introductionmentioning

confidence: 99%

Treatment of Orthopaedic Problems with Manuflex® Disposable External Fixator in 15 Dogs and 7 Cats

Şenel¹,

Ergin²,

Özdemir³

et al. 2014

Kafkas Univ Vet Fak Derg

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The aim of this study was to use Manuflex ® disposible external fixator (MDEF), designed by two Hungarian orthopaedists, one of which is MD and the other is DVM, for treatment of orthopaedic problems, and to present the outcomes in dogs and cats. Cases included fractures of humerus (n=1), tibia (n=4) and radius-ulna (n=4), an angular deformity (with radius-ulna fracture), tibio-tarsal luxations (n=3), a tarso-metatarsal fracture (n=1), mandibular fractures (n=2) in dogs; and fractures of tibia (n=2), radius (n=1) and humerus (n=2), a radio-carpal luxation (n=1), bilateral tibio-tarsal luxation and malleolar tibial fracture (n=1) in cats. Three types of fixators (large, medium and small) has been used according to animal sizes and bone fracture types. All cases had tolerated their apparatus well and did not have any postoperative reactions and they started using the limbs immediately after surgery. Pin tract infections were seen in 2 dogs. Functional outcomes were very good in 10 cases, good in 4 cases and satisfactory in 1 case, in dogs; and very good in 6 cases and satisfactory in 1 case in cats. It was concluded that MDEF can be an alternative system compared to other external fixators, because of its easier application, forming rigid fixation and stability, applying without any complicated equipments and being more economic. Keywords: External fixator, Dog, Cat, Manuflex® Ortopedik Problemli 15 Köpek ve 7 Kedinin Manuflex ® Eksternal Fikzatör İle Sağaltımı ÖzetBu çalışma, biri beşeri, diğeri veteriner hekim olan iki Macar ortopedist tarafından geliştirilen Manuflex ® eksternal fikzatörün kedi ve köpeklerde karşılaşılan ortopedik problemlerin sağaltımında kullanılması ve sonuçların değerlendirilmesini amaçlamıştır. Çalışma materyalini, köpeklerde humerus (n=1), tibia (n=4) ve radius-ulna (n=4) kırığı, angular deformitesi (radius-ulna kırığıyla birlikte), tibiotarsal lukzasyon (n=3), tarso-metatarsal kırık (n=1) ve çene kırığı (n=2), kedilerde tibia (n=2), radius (n=1) ve humerus (n=2) kırığı, radiokarpal lukzasyon (n=1), çift taraflı tibio-tarsal lukzasyon ve malleolar tibia kırığı (n=1) oluşturmuştur. Hayvanların büyüklüğüne ve kırık kemik tiplerine göre üç tip fikzatör (büyük, orta ve küçük boy) kullanılmıştır. Operasyon sonrası tüm olgular apareyi iyi tolere etmiş, herhangi bir postoperatif reaksiyon göstermemiş ve hayvanlar uzuvlarını oldukça hızlı kullanmaya başlamışlardır. Yalnız iki köpekte pin dibinde enfeksiyon şekillenmiştir. Fonksiyonel sonuçlar 10 köpekte çok iyi, 4 köpekte iyi ve 1 köpekte yeterli; 6 kedide çok iyi ve 1 kedide yeterli görülmüştür. MDEF'nin, karmaşık ekipmana gereksinim duyulmadan kolay uygulanabilmesi, yeterli fikzasyon ve stabilite oluşturması ve daha ekonomik olması yönlerinden diğer eksternal fikzatörlerle karşılaştırıldığında alternatif bir sistem olarak kullanılabileceği sonucuna varılmıştır.

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“…3,[9][10][11][12][13] An IM pin used alone is unable to resist the forces of shear, torsion, and compression, all of which can be opposed by the ESF; conversely, the limited ability of the ESF to resist bending is compensated for by the effectiveness of the IM pin in opposing this force in all directions. 3,[10][11][12][13] In addition, the ESF-IM pin tie-in method prevents migration of the IM pin, thus lessening the risk of formation of proliferative fibrous tissue and serum pockets that can commonly occur when an IM pin is cut short and covered by skin. 10 The tie-in method also simplifies achieving proper bone alignment compared with using an ESF alone.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Evaluation of External Skeletal Fixator–Intramedullary Pin Tie-in Configurations Applied to Cadaveral Humeri From Red-tailed Hawks (Buteo jamaicensis)

Wettere¹,

Redig²,

Wallace³

et al. 2009

Journal of Avian Medicine and Surgery

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Use of external skeletal fixator-intramedullary pin (ESF-IM) tie-in fixators is an adjustable and effective method of fracture fixation in birds. The objective of this study was to determine the contribution of each of the following parameters to the compressive and torsional rigidity of an ESF-IM pin tie-in applied to avian bones with an osteotomy gap: (1) varying the fixation pin position in the proximal bone segment and (2) increasing the number of fixation pins in one or both bone segments. ESF-IM pin tie-in constructs were applied to humeri harvested from red-tailed hawks (Buteo jamaicensis) (n=24) that had been euthanatized for clinical reasons. Constructs with a variation in the placement of the proximal fixation pin and with 2, 3, or 4 fixation pins applied to avian bone with an osteotomy gap were loaded to a defined displacement in torque and axial compression. Response variables were determined from resulting load-displacement curves (construct stiffness, load at 1-mm displacement). Increasing the number of fixation pins from 1 to 2 per bone segment significantly increased the stiffness in torque (110%) and compression (60%), and the safe load in torque (107%) and compression (50%). Adding a fixation pin to the distal bone segment to form a 3-pin fixator significantly increased the stiffness (27%) and safe load (20%) in torque but not in axial compression. In the configuration with 2 fixation pins, placing the proximal pin distally in the proximal bone segment significantly increased the stiffness in torque (28%), and the safe load in torque (23%) and in axial compression (32%). Results quantified the relative importance of specific parameters affecting the rigidity of ESF-IM pin tie-in constructs as applied to unstable bone fracture models in birds.

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Application and Postoperative Management of External Skeletal Fixators

Cited by 47 publications

References 8 publications

Imobilização de fraturas femorais em gatos usando pino intramedular conectado ou não ao fixador esquelético externo

Imobilização de fraturas femorais em gatos usando pino intramedular conectado ou não ao fixador esquelético externo

Treatment of Orthopaedic Problems with Manuflex® Disposable External Fixator in 15 Dogs and 7 Cats

Mechanical Evaluation of External Skeletal Fixator–Intramedullary Pin Tie-in Configurations Applied to Cadaveral Humeri From Red-tailed Hawks (Buteo jamaicensis)

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