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: Research indicates that the articular surfaces of the thumb carpometacarpal (CMC) joint become flatter and more conforming with age. Mature thumbs are more likely to develop osteoarthritis (OA) , which further alters bone curvature compared to the healthier, more curved surfaces of young thumbs.
: A person's "texting thumb" often reveals their age generation.
: Typically use both thumbs for high-speed typing or a single thumb for "swiping". mature and young thumbs
: Young thumbs in children contain growth plates (physes) made of cartilage, which are responsible for lengthening the bone. As an individual matures, these plates calcify or "close," and the bones reach their adult size and shape.
In humans, the physical structure of the thumb changes remarkably from infancy through adulthood. : Research indicates that the articular surfaces of
In a botanical context, "thumb" often refers to a gardener's skill (a "green thumb") or the maturity stages of a plant. How Old Do You Text? Guess My Age Challenge with iPhone
The transition from a "young thumb" to a "mature thumb" involves significant physical remodeling and shifts in behavioral use, whether in human anatomy or gardening terminology. Anatomical and Behavioral Differences : Typically use both thumbs for high-speed typing
: More likely to use a "hunt and peck" style, often holding the phone with one hand and typing with the index finger of the other. "Thumbs" in Gardening (Maturity vs. Youth)