Hold one hand up and look at it as if you had never seen it before. A long, restless thumb with its own dedicated muscle. Short, straight fingers. A palm full of muscle. Set beside a chimpanzee’s hand, ours is almost a different tool, and the fossil record now shows how it came to be: not in one leap when our ancestors stood upright, but in steps, over roughly seven million years, under pressures that were all about doing. Climbing. Carrying. Striking stone. Butchering.
In this Clinical Insight, Dr Jo Abbott follows the hand from Ardipithecus to the Paranthropus boisei hand described in October 2025, and asks a question the anatomists never needed to: what does it mean for a profession that uses this hand to measure? Along the way: why longer thumbs go with a larger neocortex across 94 primate species, why early hominin hands held two jobs at once and ours still do, what stone-tool experiments reveal about why palpation cannot be taught by demonstration alone, and why a composite fossil hand is a useful warning about composite clinical findings.
Written for every hands-on clinician, and for anyone curious about where the instrument at the end of their arm came from. Fully referenced to the primary studies, with a five-step calibration, “The inherited hand”, to use before the first patient of the day.
Part of the HODA-A™ Clinical Insight Series: concise, research-informed publications on clinical observation, palpation, measurement and reasoning.
The Hand You Inherited
Original price was: £9.99.£4.99Current price is: £4.99.
Evolution gave you a hand built for gripping, making and striking. Nobody gave you a hand built for measuring. A referenced tour of seven million years of hand evolution, and what it means for palpation. For hands-on clinicians; fully referenced, exercise included.
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