What are the main types of limb reduction?

There are two main types of limb difference: congenital limb difference and acquired limb difference. Congenital limb difference is also referred to as “limb reduction” or “congenital amputation” or “amelia” and occurs when someone is born missing all or part of their upper and/or lower limbs.

When can upper and lower limb reduction defects be detected?

It is sometimes detected before birth on prenatal ultrasound. Although there are many causes of limb reduction, women who take folic acid during pregnancy have a 30-40% reduced risk of having a child with a limb deformity. Lower limbs are affected less often than upper limbs.

What causes Amelia?

In a few cases, amelia may be attributed to health complications during the early stages of pregnancy, including infection, failed abortion or complications associated with removal of an IUD after pregnancy, or use of teratogenic drugs, such as thalidomide.

What is upper limb deficiency?

A missing or incomplete arm at birth is referred to as congenital upper limb deficiency or congenital limb amputation or limb reduction. These defects are mostly attributed to primary intrauterine growth inhibition or disruptions secondary to intrauterine destruction of normal embryonic tissues.

What are the 2 types of limbs?

In the human body, arms and legs are commonly called upper limbs and lower limbs, respectively. Arms are connected to the torso or trunk at the shoulder and legs are connected at the hip girdles.

How can upper and lower limb reduction defects be prevented?

There is no known way to prevent this type of defect, but some of the problems experienced later in life by a person born with a limb reduction defect can be prevented if the defect is treated early. Even so, mothers can take steps before and during pregnancy to have a healthy pregnancy.

When do limb defects occur?

Limb formation occurs at 4-8 weeks’ gestation, while primary ossification centers develop in all the long bones of the limbs by the 12th week of gestation. The molecular regulation of limb formation is under the control of different gene families.

What is Amelia syndrome?

Tetra-amelia syndrome is a very rare disorder characterized by the absence of all four limbs. This syndrome can also cause severe malformations of other parts of the body, including the face and head, heart, nervous system, skeleton, and genitalia.

What causes limbs to not fully develop?

A congenital limb defect is when an arm or leg doesn’t form normally as a baby grows in the uterus. The exact cause of a congenital limb defect is often not known. Certain things may increase the chances of a child being born with such a defect. These include gene problems or exposure to some viruses or chemicals.

What are the 6 main joints of the upper limb?

The upper limb has a wide range of precise movements associated with it to allow us to effectively interact with our environment, the 6 main joints covered here (from proximal to distal) are the sternoclavicular, acromioclavicular, shoulder, elbow, radioulnar, and wrist joints.

When do upper and lower limb reduction defects occur?

Upper and lower limb reduction defects occur when a part of or the entire arm (upper limb) or leg (lower limb) of a fetus fails to form completely during pregnancy. The defect is referred to as a “limb reduction” because a limb is reduced from its normal size or is missing.

What are the treatments for upper limb reduction?

Potential treatments include: 1 Prosthetics (artificial limbs) 2 Orthotics (splints or braces) 3 Surgery 4 Rehabilitation (physical or occupational therapy)

How often do babies have upper limb reductions?

In other words, each year about 4 out of every 10,000 babies will have upper limb reductions and about 2 out of every 10,000 babies will have lower limb reductions.