A "natural" thumb can be affected by various conditions as it matures or ages:
: The thumb's unique shape and mobility are driven by specific transcription factors like HOXA13 and TBX5 , which distinguish it from the other four digits. 3. Clinical Markers of Maturity and Health mature natural thumbs
: The thumb pillar is supported by four large extrinsic muscles in the forearm and four smaller intrinsic muscles at the base of the thumb. A "natural" thumb can be affected by various