Table of Contents
What causes hypoplastic thumb?
The cause of thumb hypoplasia is unknown, but the condition has been associated with several genetic syndromes and conditions including: VATER syndrome, a group of birth defects that affect five different areas in which a child may have abnormalities: vertebrae, anus, trachea, esophagus and renal (kidneys)
What is congenital thumb hypoplasia?
Thumb hypoplasia, also known as hypoplastic thumb, is a condition in which a child’s thumb is smaller than normal. Thumb aplasia is a condition in which the thumb is completely absent. Thumb hypoplasia or aplasia often happen in children with radial longitudinal deficiency.
What is thumb aplasia?
Thumb hypoplasia means that your child’s thumb is unusually small or underdeveloped. This condition is also commonly called hypoplastic thumb. Thumb aplasia means that your child’s thumb is missing altogether.
Can people be born without a thumb?
Babies with thumb hypoplasia are born with a thumb that is smaller than normal, or with the thumb missing completely. Sometimes the bones of the wrist or arm are smaller or missing too. Thumb hypoplasia can happen on one or both hands.
What does it mean when you have small thumbs?
Brachydactyly is an inherited condition, which makes genetics the main cause. If you have shortened fingers or toes, other members of your family most likely also have the condition. It is an autosomal dominant condition, which means you only need one parent with the gene to inherit the condition.
How important is the thumb?
Humans can move their thumb farther across their hand than any other primate. Having opposable thumbs helps in grasping things more easily, picking up small objects, and eating with one hand. Opposable thumbs help humans operate tools to make use of resources in our environment.
What is it called when you have a wide thumb?
In addition to our thumbs being pretty stumpy, those of us who have clubbed thumbs also have wider-than-average, shorter-than-average thumbnails, and they have no backward arch to them.
What does it mean if you have a small thumb?
What is it called when you don’t have a joint in your thumb?
Thumb hypoplasia is a spectrum of congenital abnormalities of the thumb varying from small defects to complete absence of the thumb. It can be isolated, when only the thumb is affected, and in 60% of the cases it is associated with radial dysplasia (or radial club, radius dysplasia, longitudinal radial deficiency).
Can you fix Brachydactyly type D?
Unless there is an accompanying disorder that produces symptoms, or the shortened digits impair the use of hands and feet, there is no treatment needed for brachydactyly.
What are the different types of thumb hypoplasia?
Thumb hypoplasia refers to an abnormally small, poorly developed thumb. When there is not a thumb on the hand, it is called thumb aplasia. Thumb hypoplasia comes in different types. These types depend on the extent of underdevelopment: • Type 1: Small but stable bones and normal muscles.
When to have surgery for thumb hypoplasia?
Surgery is performed between the ages of 6 and 18 months. Surgery involves reconstructing an unstable thumb joint and releasing tight web spaces. • Pollicization: More severe type 3, 4 and 5 thumbs may call for a surgical procedure called “pollicization.” In this operation, the index finger is transferred to the thumb position.
What is the medical term for underdevelopment of the thumb?
Thumb hypoplasia is the congenital underdevelopment of the thumb frequently associated with partial or complete absence of the radius. Musculotendinous and osseous deficiencies