As the number of dogs and cats raised in Shanghai has increased significantly, especially small dogs such as Chihuahuas, Pomeranians, VIPs and Bichon bears. Pet fracture operations are also increasing day by day, and simultaneous fractures of the radius and ulna are particularly common, accounting for more than 30% of the incidence of fractures. At this time, because the two long bones have lost their support points, the simple external fixation plaster bandage cannot stabilize the fractured end very well, resulting in poor fracture healing. Therefore, surgical treatment must be used, and implants are used to help the fractured bone be effective and stable. fixed. There are many types of ulna and radius fractures, and what kind of implant to use for internal fixation is a question that our doctors need to consider.
Orthopedic implants are medical devices used to restore the structural integrity of damaged bones or replace missing bones and joints. In the field of fracture repair, the choice of the most suitable implant and fixation method is affected by many mechanical, biological and clinical factors.
Orthopedic Steel Wire
Orthopedic steel wire is made of 316L stainless steel. Compared with other implants, orthopedic steel wire is more malleable, and the surgical veterinarian can easily shape and fix it by kinking. The main clinical indications of orthopedic steel wire are cerclage steel wire fixation and tension band fixation.
Application principle of cerclage wire
The cerclage steel wire is not suitable as a fixation method for fractures alone. It is usually used as an auxiliary fixation method for intramedullary nails to provide compression between sections.
It is only suitable for fracture cases that have 2 fragments and can be completely reconstructed. Comminuted fractures should be avoided.
At least 2 circling steel wires should be used.
Dynamic compression bone plate
This bone plate can use a neutral drilling guide, so that the hole drilled by the bone drill is located in the center of the bone plate cavity, which only has a neutralizing effect. An eccentric drilling guide can also be used to achieve a compression effect through the slope configuration of the bone screw hole and the eccentric placement of the bone screw. In the process of drilling and tightening, the head of the bone screw moves downward and horizontally at the same time. There is also an improved dynamic compression bone plate-limited contact dynamic compression bone plate, which is characterized by grooves on the lower surface between the screw holes of the bone plate. This structure has more uniform rigidity and has a larger compression area. Small, it can significantly improve the blood supply of the periosteum to the bone fragments under the bone plate.