Ask a Scientist: Is There Such a Thing as Being ‘Big Boned’?

The Scientist: Claudette Lajam, M.D., assistant professor of orthopedic surgery at NYU Langone Hospital for Joint Diseases and a spokesperson for the American Academy of Orthopaedic Surgeons

The Answer: In a word, yes, there really is such a thing as being big boned—but it’s not a medical term, and it’s not always used correctly.

First, the facts. Within the range of normal, some people’s bones have a bigger circumference than others’ relative to their respective heights. These people are, indeed, bigger boned. There’s a quick test to determine if you have a small, medium or large frame. All you have to do is measure your wrist. For women between 5’ 2” and 5’ 5”, a circumference of 6.25” to 6.5” is considered medium. Anything below that is small; above that is large. For shorter women, the medium range is 5.5” to 5.57”, and for taller women, it’s 6.25” to 6.5”. (A quick cheat: If you wrap the thumb and middle finger of one hand around the opposite wrist, do they overlap, just touch or not touch at all?)

What big boned means and what people mean by big boned may not be the same thing, however. Think Eric Cartman on South Park saying, “I’m not fat, I’m big boned!” People with larger bones are slightly larger for their heights, yes, but it’s the soft tissue atop and around those bones—muscle and fat—that make some people look more “big boned” than others. Obese patients who need knee or hip replacement surgery can weigh more than 350 pounds and have objectively big legs, but actually have very small bones. Nor is it an issue of bone density, which is a measurement of how much calcium and other minerals are packed into your bones, and has nothing to do with how big they are. But bone density is an important concern for women, who are more prone to osteoporosis and osteopenia, whether they’re big boned or not.

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  • Norma CinnamonToast Diaz

    Why not just say women 5’2″ and taller if the wrist measurement is the same??

  • http://surinascummies.tumblr.com/ Surina’s Cummies

    I”m five feet and 7 inches.. fug

  • Ali Browning

    I hate having a big frame, my wrist are thick and my hands huge ( thanks Great granny Blair NOT) but seriously as a thin teenager and in my early 20s I was so upset that gloves would not fit my long, fingers and big hands that I starved myself thinking it was obesity making then so big, never mind you could see my ribs and pelvic bones, I just have a large frame, 5 ft 7 and broad shoulders and broad rib cage, big hands and wrists but little skinny ankles and small but wide feet, work that one out. I carry excess weight on the waist line and bust and I know what is fat and what’snot ( fat that’s fowl squashy stuff I am working on getting rid of, I was a thin in my youth fatter with middle age) I have fat friends, really fat friends with soft rounded bodies and tiny , dainty hands and delicate wrists, their thumb nails as small as my little finger nail, I hate being big framed, I was made to be an athlete but i hate sports.

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