Search results
Hitchhiker's thumb. Hitchhiker's thumb, also known as distal hyperextensibility of the thumb, is the condition of having a thumb that has a distal phalange that bends backwards in an angle of 90°. This condition is benign (when isolated) and does not cause pain or affect the thumb with the trait negatively. If a person has the genes for this ...
Jun 19, 2019 · Hitchhiker’s thumb is a thumb that’s hypermobile, or very flexible, and able to bend backward beyond the normal range of motion. Known formally as distal hyperextensibility, this condition isn ...
Sep 23, 2023 · The researchers gave the name “hitchhiker’s thumb” to the thumbs that could bend at an angle equal to or greater than 50 degrees. They noted that many people had one hitchhiker’s thumb and ...
May 18, 2022 · Hitchhiker’s thumb (distal hyperextensibility) means your thumb joint is extremely flexible and has an abnormal range of movement. When you give a “thumb’s up” sign, your thumb joint moves backward more than 50 degrees. Hitchhiker’s thumb typically isn’t painful but it can be associated with various genetic diseases and conditions.
Dec 29, 2022 · Hitchhiker's thumb is not to be considered as a genetic condition or disorder, but is a result of the phenotype. Phenotype consists of traits that influence the appearance and behavior of a person.
Hitchhiker`s Thumb is a hereditary condition, where the thumb joint can bend backwards or form an angle greater than 90 degrees. This condition is caused by a variation in a particular gene that controls the development of the thumb. It doesn`t usually cause any pain, though some people with the condition may experience some discomfort.
Hitchhiker's thumb: The myth. Some people have "hitchhiker's thumbs," which bend backwards with a large angle between the two segments (phalanges). The myth is that there are just two kinds of thumbs, straight thumbs (S) and hitchhiker's thumbs (H), and the trait is controlled by a single gene with two alleles, with the allele for S being dominant.
May 9, 2019 · The Hitchhiker’s Thumb is a thumb where the distal joint can bend as far backwards as 90 degrees. The Hitchhiker’s Thumb is often referenced as a visual trait of genetic inheritance. Here we discuss the science behind it and how we developed a serverless webapp that allows people to score the angle of their thumb.
Hypermobile thumbs A hypermobile thumb (also called Hitchhiker's thumb). Hypermobility generally results from one or more of the following: Abnormally shaped ends of one or more bones at a joint; A defect of Type 1 collagen (as found in Ehlers–Danlos syndrome) or other connective tissue (as found in Loeys–Dietz syndrome and Marfan syndrome) resulting in weakened ligaments/ligamentous ...
Flexi Says: The single-gene autosomal traits include the hitchhiker’s thumb. The allele for the hitchhiker’s thumb (curved thumb) is dominant to the allele for the straight thumb. Was this helpful? Want to learn more? Ask your own question! The single-gene autosomal traits include the hitchhiker’s thumb. The allele for the hitchhiker’s ...
