Table of Contents
What is the function of the epiphyseal line in a long bone?
The epiphyseal line serves no function in the bone, being purely vestigial. However, it serves as an indicator of the boundary between the epiphysis and diaphysis.
What does the epiphysis do in the long bones of the body?
The epiphysis is made of spongy cancellous bone covered by a thin layer of compact bone. It is connected to the bone shaft by the epiphyseal cartilage, or growth plate, which aids in the growth of bone length and is eventually replaced by bone.
Is epiphysis present in adults?
The long bone in a child is divided into four regions: the diaphysis (shaft or primary ossification centre), metaphysis (where the bone flares), physis (or growth plate) and the epiphysis (secondary ossification centre). In the adult, only the metaphysis and diaphysis are present (Figure 1).
What causes overgrowth of bone?
Fibrous dysplasia is a condition that causes abnormal growth or swelling of bone. The cause seems to be a genetic change that alters the usual growth of the bone’s connective tissue. Treatment includes surgery to remove diseased section of bone.
Why are older people’s bones weaker?
As you age, your body may reabsorb calcium and phosphate from your bones instead of keeping these minerals in your bones. This makes your bones weaker. When this process reaches a certain stage, it is called osteoporosis. Many times, a person will fracture a bone before they even know they have bone loss.
How long does a bone take to fully heal?
Most fractures heal in 6-8 weeks, but this varies tremendously from bone to bone and in each person based on many of the factors discussed above. Hand and wrist fractures often heal in 4-6 weeks whereas a tibia fracture may take 20 weeks or more. Healing time for fractures are divided into three phases: 1.
Which is bone tumor appears in epiphysis?
Chondroblastoma is a rare, benign tumor derived from chondroblasts. It is found in the epiphysis of long bones, usually of the lower extremity. The most common site is the distal femur followed by the proximal femur, proximal humerus and proximal tibia.
Where is the epiphyseal line located?
Epiphyseal Line. The structure indicated is the epiphyseal line. The epiphyseal plate is a plate of hyaline cartilage found in children and adolescents, located in the metaphysis at the ends of each long bone.
What is the function of the epiphyseal line?
Once the entire growth plate is ossified, the epiphyseal line has formed. The epiphyseal plate is the portion of the bone that is responsible for a bone’s growth in length. It is formed from cartilage cells that are constantly dividing within the growth plate.
What are the four zones of the epiphyseal plate?
Epiphyseal plate. Consists of four zones: resting cartilage, proliferating cartilage, hypertrophic cartilage, and calcified cartilage. Because of the cell division in the epiphyseal (growth) plate, the diaphysis of a bone increases in length.