I've been diagnosed with 'mild BJHS' and am currently waiting to see a rheumy for an updated diagnosis taking all my symptoms into account.
I have positive Walker-Murdoch wrist signs and Steinburg thumb signs on both hands, which means I have arachnodactyly - Oooh spider fingers! Ha ha ha! I have small feet for my height though (size 6, 5'7") and my back is really long in comparison to my legs. I haven't bothered working out the ratios as I'm so sure that they won't be anywhere
So, my self-diagnosis (how I hate self-diagnosing - gimme a Doc who can just tell me! Purlease!), using my 'bible' - Hypermobility Syndrome - Recognition and Management for Physiotherapists by Rosemary Keer and Rodney Grahame, is that I have HMS with some marfanoid features (well, just the one, arachnodactyly), but quite definitely do not have Marfan Syndrome.
This pleases me, because it means my fingers are officially long and spideryly graceful, but I don't have the additional problems of Marfans to deal with!
Sorry, I just really like the words 'arachnodactyly' and 'spiderlyly' which I know is a made up word, but I still like it!