Some people have thumbs that are hypermobile. This means they bend backward beyond the typical range. The medical term for hitchhiker’s thumb is distal hyperextensibility. It is also known as Z-shaped ...

RA can cause changes to the joints and ligaments in the hands, leading to twisted joints and gnarled ligaments, but early diagnosis and effective treatments can help prevent severe damage. Common hand ...

Joint deformity can occur in various joints but are most common in the hands and feet. Causes of joint deformity include injury and degenerative conditions such as osteoarthritis. A joint is where two ...

Boutonniere deformity causes the middle joint in a finger or thumb to bend inward and the end joint to bend outward. It is possible to correct this using a splint, but sometimes, other treatments are ...