What are the four A's of fracture. - Cornell University.
This is the first stage in the healing of a bone fracture. In order, here are the stages of bone fracture healing: (1) formation of a hematoma, (2) formation of a fibrocartilaginous callus, (3) formation of a bony callus, and (4) bone remodeling.
The timing of treatment of facial fractures depends on many factors. In general, it is always better to treat an injury as soon as possible. Evidence shows that the longer open or compound wounds are left untreated, the greater is the incidence of Infection.
The intertrochanteric nail from Homework 4 is used to repair a hip fracture. The stainless steel nail and the femur (cortical bone) have these properties: bone steel ts tension compression shear loads 180GPa 15 0.28 860 MPa 127 17 3.3 ?yield 502 MPa 80 ?inil 135 The unloaded nail is 6 cm long with a rectangular cross-section, 10 mm wide x 5 mm high.
The 4 steps of bone repair are hematoma formation, fibrocartilaginous callus, bony callus, and remodeling. A medical person can help the fracture to mend by reducing (straightening), immobilizing.
Comminuted Fracture. A comminuted fracture can be an open fracture as well as closed fracture. An open comminuted fracture may lead to a complication because as a result of this kind of injury internal body tissues are exposed to the environment. An infection usually follows this kind of injury. This is one of the common complications.
Common types of fractures include: Stable fracture. The broken ends of the bone line up and are barely out of place. Open, compound fracture. The skin may be pierced by the bone or by a blow that breaks the skin at the time of the fracture. The bone may or may not be visible in the wound. Transverse fracture.
Fractures of the mandible are referred to as favorable or unfavorable, depending on the angulation of the fracture and the force of the muscle pull proximal and distal to the fracture. In a favorable fracture, the fracture line and the muscle pull resist displacement of the fracture (Fig. 24-13).