Symptoms vary among people with<unk> s, those who have it as an isolated trait aren't affected by any symptoms, however, this trait is sometimes a symptom of other conditions, such as a hypermobility spectrum disorder. The signs of this trait are having a thumb with a distal phalange that is able to bend backwards beyond the normal range of motion. Some people with<unk>  also have a Z-shaped deformity, named after the appearance of this deformity, which is that of the letter Z. Example of a z-shaped deformity in a<unk>
Hitchhiker's thumb
Footballer's ankle
Nintendo thumb
Morton's toe
Saber shin
Hip pointer
Reflex hammer
Jaipur foot