Use of a locking plate “notched head T-plate®” for the fixation of an ilial body fracture in a dog

Abstract

Several types of implants may be used to treat iliac fractures in dogs, of which osteosynthesis with plate is the most described and recommended in the literature. The type of plate and screw are major factors in osteosynthesis success. The use of locking plates has been advocated for this purpose, as they do not allow the plate-bone-screw unit to shift, providing angular stability and rigidity to the system. The present study aimed to describe the unprecedented use of a locking notched head T-plate in the treatment of a caudal body of ilium fracture. A two year old male mongrel dog was attended after falling from a third floor height, with two days of evolution. The animal was in standing position, and during orthopedic examination non-weight bearing lameness of the right hind limb, instability, and crepitus in the right body of ilium, with considerable swelling and pain. The radiographic examination allowed diagnosing a complete fracture of the caudal body of ilium with decrease of the pelvic canal diameter. The patient underwent surgery, and the fracture was stabilized with an LCP notched head T-plate. The patient evolved satisfactorily, with good weight-bearing of the affected limb within 24 hours of surgery, and complete recovery with medical discharge after 60 days of postoperative period, with consolidation of the fracture. Key words: Orthopedics. Traumatology. Pelvis. LCP. ResumoVários tipos de implantes são utilizados no tratamento de fraturas de ílio em cães, sendo a osteossíntese com uso de placa a mais descrita e recomendada pela literatura. O tipo de placa, assim como o tipo de parafuso, são fatores preponderantes no sucesso da osteossíntese. Tem sido defendido o uso de placas bloqueadas, que não permitem movimentação entre a unidade placa-osso-parafuso, conferindo estabilidade angular e rigidez ao sistema. Objetivou-se descrever o uso inédito da placa bloqueada "notched head T-plate" no tratamento de fratura caudal de corpo de ílio. Um cão, macho, sem raça definida, de dois anos de idade foi atendido apresentando histórico de queda de terceiro andar, com dois dias de evolução. O animal apresentava-se em estação e durante a avaliação ortopédica observou-se deambulação com impotência funcional do membro pélvico direito, instabilidade e crepitação em corpo

Physics behind the implants used for high strain fractures: literature review

“…At first, both cortices are equally compressed, but with increased pressure bone tends to bend slightly towards the plate. Straight plates need to be pre-contoured prior to application, to keep intimate contact with the bone surface (SCHATZKER, 2002;FERRIGNO et al, 2016).…”

Meta-Analysis of the Therapeutic Use of Dipyrone in Dogs: Pharmacological Effects and Clinical Safety

“…The potent analgesic effect of dipyrone in dogs is well-known and it is mainly related to the inhibition of the cyclooxygenase (COX) enzyme, and consequent decrease in prostaglandin synthesis, resulting in the reduced sensitivity of nerve endings to inflammatory mediators such as bradykinin. Several studies have found that dipyrone is effective as an analgesic in postoperative pain in dogs undergoing removal of tumors, ovarian hysterectomy, and splenic torsion (Caulkett et al, 2003;Imagawa et al, 2011;Zanuzzo et al, 2015;Guerrero et al, 2015;Bellio et al, 2015;Souza et al, 2016;Ortiz et al, 2016;Ferrigno et al, 2016;Sembenelli et al, 2016;Dalmolin et al, 2020). For Ripplinger et al (2018), the association of metamizole and morphine or metamizole and methadone did not result in an increase in adverse effects in dogs when compared to animals treated with morphine or methadone alone.…”