Читать книгу Fractures in the Horse - Группа авторов - Страница 153

In the horse, in which bed rest cannot be enforced and because of their large size, external fixation (Chapter 13) is only used when no internal fixation techniques are viable, such as with highly comminuted fractures or occasionally with an open fracture. The typical ring external fixator applied in other species is not commonly used in horses, and instead either a pin cast or customized external fixator is employed [41]. The technique is dependent on secondary bone healing, and providing sufficient stability for this process is critical to success. Pin breakage or bone failure in the region of the pins are not uncommon sequelae and can lead to failure [42]. Pin loosening can also result in reduced stability at the fracture site, which impedes healing, and increases pain. External fixation is inevitably a race between fracture healing (decreasing pain) and pin and/or bone failure.