Final answer:
Circular external fixator frames help in reducing stress on the fracture and promote stabilization for bone healing. They are considered particularly suited for complex fractures. The healing process involves steps starting from hematoma formation to the creation of calli and finally remodeling of the bone.
Step-by-step explanation:
Circular external fixator frames are designed to reduce stress and encourage stabilization to facilitate fracture healing. These frames provide an alternative to internal fixation and are particularly useful for complex fractures or when minimally invasive methods are preferred. The healing process is typically initiated by a hematoma formation, followed by the development of internal and external calli.
Essential to this process are osteoclasts, which resorb dead bone, and osteoblasts, which form new bone. The new bone gradually replaces the fibrocartilaginous matrix known as the internal callus, created in the endosteal region between the broken bone ends. Eventually, the calli unite, bone remodeling occurs, and the bone healing completes.