Final answer:
The seventh step in the fracture healing process is bone remodeling, which is the final phase where repaired bone reshapes, strengthens, and often shows no external evidence of the original fracture.
Step-by-step explanation:
The Seventh Step of the Fracture Healing Process
The healing of a bone fracture is a complex process that involves several stages. According to the provided information, the final stage, known as bone remodeling, is considered the seventh step in the fracture repair process. During bone remodeling, the healed bone reshapes and strengthens in response to the physical stresses placed upon it. This stage follows the replacement of trabecular bone from cartilaginous callus and can lead to a situation where no external evidence of the fracture remains.
During bone remodeling, the internal and external calli unite, and compact bone begins to replace spongy bone at the outer margins of the fracture. Although slight swelling may remain on the outer surface, the bone usually undergoes further remodeling, and the swelling is reduced. This remodeling is essential for restoring the normal shape and function of the bone.