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A Guide to Legs by ChrisMasna A Guide to Legs by ChrisMasna
A lot of people put "human legs" on dinosaurs. Not only when drawing, they are also very common in animatronics (90% of which are crap in the purest form). This needs to be corrected.
Also, be careful with max. movement range (not shown here). Examples: at maximum retraction of the hip, the femur will be at 90° (vertical). And even at maximum extension of the knee, femur and tibia/fibula will NOT be aligned at 180°. Never.

If you find any error, let me know. (Both in the anatomy and the grammar). Suggestions are welcome. 



References:
:bulletblack:www.skeletaldrawing.com
:bulletblack:"The Complete Dinosaur, Second Edition."
:bulletblack:Hutchinson, Anderson, Blemker, and Delp. "Analysis of hindlimb muscle moment arms in Tyrannosaurus rex using a three-dimensional musculoskeletal computer model: implications for stance, gait, and speed." Paleobiology, 2005.
:bulletblack:Carrano, M. T. and Hutchinson, J. R. (2002), Pelvic and hindlimb musculature of Tyrannosaurus rex(Dinosauria: Theropoda). J. Morphol., 253: 207–228. doi: 10.1002/jmor.10018

...And some others I forgot to bookmark.

And thanks to dracontes for his corrections during the process.


Guide to Names:
Nomenclature for Beginners by ChrisMasna
Add a Comment:
 
:iconjonagold2000:
JonaGold2000 Featured By Owner Apr 11, 2015  Hobbyist Traditional Artist
Great guide and definitely very usefull :)
Reply
:iconalysataladay:
AlysaTaladay Featured By Owner Mar 25, 2015  Hobbyist General Artist
I knew something felt wrong....
Reply
:iconspinocharonychus:
Spinocharonychus Featured By Owner Dec 18, 2014  Student Traditional Artist
Thanks, now i must go and fix my drawings. See you in a thousand years.
Reply
:iconkrookodile0553:
Krookodile0553 Featured By Owner Sep 4, 2014
A quick question?... For larger Dinosaurs, would legs not be bent as much?... I always hear that the tail and 180 degree back counterbalances weight. Yet don't "at least bipedal" legs have to support all that?...
Reply
:iconmonster-man-08:
Monster-Man-08 Featured By Owner Jul 21, 2014
Oh I definitely needed to see this. I had this nagging feeling I was drawing legs terribly terribly wrong, and now I know why. Thanks!
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Jul 23, 2014
Glad to help :)
Reply
:icontraheripteryx:
Traheripteryx Featured By Owner Jun 27, 2014  Hobbyist General Artist
Brilliant! Thanks for sharing this! :D
Really helpful!
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Jul 6, 2014
Thanks! Glad to help :)
Reply
:icontraheripteryx:
Traheripteryx Featured By Owner Jul 7, 2014  Hobbyist General Artist
No problem! :)
Reply
:icontitanorex:
TitanoRex Featured By Owner May 13, 2014
that feel when you make this mistake all the time :c
Reply
:iconlv-jeanne:
LV-Jeanne Featured By Owner Apr 2, 2014  Professional Interface Designer
Great, thanks!
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Apr 3, 2014
thanks!
Reply
:iconpilsator:
pilsator Featured By Owner Apr 1, 2014  Hobbyist Traditional Artist
Great, hope this will help many budding artists!

One minor thing - switch the labels for tibia/fibula.
Reply
:iconzombiesaurian:
ZombieSaurian Featured By Owner Mar 31, 2014  Student Digital Artist
Very helpful tutorial! 
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Apr 1, 2014
thanks!
Reply
:iconloucathwil:
Loucathwil Featured By Owner Mar 31, 2014  Hobbyist Artisan Crafter
Excellent work.

Also, a side point; I'm no expect, but for any animal (including ourselves) to maintain that kind of bent knee position for long periods of time, surely that would be very tiring?
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Apr 1, 2014
thank you!

About the position, what yoult said.
Reply
:iconloucathwil:
Loucathwil Featured By Owner Apr 2, 2014  Hobbyist Artisan Crafter
^^; thank you! 
Reply
:iconyoult:
yoult Featured By Owner Mar 31, 2014  Professional General Artist
Birds have their knees bent their whole life, putting it straight is very stressing or even impossible for them. Actually many animals, including mammals, have their knees bent in neutral positions, look that Cattle Skeleton for example.
Reply
:iconloucathwil:
Loucathwil Featured By Owner Mar 31, 2014  Hobbyist Artisan Crafter
*expert

I'm speaking in regards to fig 1
Reply
:iconyoult:
yoult Featured By Owner Mar 31, 2014  Professional General Artist
Ah sorry, didn't see that comment!
Reply
:iconloucathwil:
Loucathwil Featured By Owner Mar 31, 2014  Hobbyist Artisan Crafter
Ahaaa I see what you mean!

Thank you for the swift response
Reply
:iconzimices:
Zimices Featured By Owner Mar 30, 2014  Hobbyist
Gracias por estas gráficas, siempre hacen falta :)
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Apr 1, 2014
un gusto hacerlas
Reply
:iconmanwith0name:
manwith0name Featured By Owner Mar 30, 2014  Hobbyist Writer
A nice dose of humor was put into this.  I like it!
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Apr 1, 2014
;)
Reply
:icondinobirdman:
DinoBirdMan Featured By Owner Mar 30, 2014  Student Artist
I'm understand now, I'll better re-drawn other theropods as well.
Reply
:iconbenjamintdickens:
BenjaminTDickens Featured By Owner Mar 30, 2014
Great tutorial!
Ugh...I'm a shrink-wrapper.
Reply
:iconpfunkei:
Pfunkei Featured By Owner Mar 30, 2014
Isn't the bulk of the m. caudofemoralis longus attached to the tail?
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Apr 1, 2014
yes, but there was no space to draw the tail so I just faded it.
Reply
:iconbattleferrets:
Battleferrets Featured By Owner Mar 30, 2014  Hobbyist Digital Artist
I literally just saw this on Tumblr. Very helpful reference!
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
So it is on Tumblr already?
Thanks!
Reply
:iconbattleferrets:
Battleferrets Featured By Owner Mar 30, 2014  Hobbyist Digital Artist
Reply
:iconikessauro:
ikessauro Featured By Owner Mar 30, 2014
Thank you for the tutorial, it will be quite useful. Keep these coming, they are awesome!
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
Glad to help! As long as I have time, I'll do more.
Reply
:iconsparkknight2:
SparkKnight2 Featured By Owner Mar 30, 2014  Hobbyist Traditional Artist
This is just what I needed, thank you. 
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
Glad to help!
Reply
:iconraven-amos:
raven-amos Featured By Owner Mar 30, 2014  Professional General Artist
Uggggh. I need to re draw most of my theropods now. :D
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
well, me too actually :P mostly because of the shrink wrapping 
Reply
:icont-pekc:
T-PEKC Featured By Owner Mar 30, 2014
Great tutorial Chris! I find it useful myself and hope that beginner paleoartists will appreciate it and find it helpful too.
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
Thanks, Vlad!
Reply
:iconyoult:
yoult Featured By Owner Mar 30, 2014  Professional General Artist
HOW AND WHY ...can't I fave this a dozen times?! :D
Good job, iirc Tomo once made something similar, but not as detailed as this one.
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
Mein lieber bruder aus Eden: indeed, I saw Tomo's right before uploading this, I guess I'm not the first then :P
Reply
:iconyoult:
yoult Featured By Owner Mar 31, 2014  Professional General Artist
Dear brother ChrisMasna from BANANA REPUBLIC is angel of paleoartismo. :)
Reply
:iconsmnt2000:
Smnt2000 Featured By Owner Mar 30, 2014  Hobbyist Traditional Artist
Amazing guide, you've done a great job ;)
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
Thanks, man :)
Reply
:iconprimevalraptor:
PrimevalRaptor Featured By Owner Mar 30, 2014  Hobbyist Digital Artist
Thanks a bunch, this will surely come in handy for many people, myself included. :D
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
glad to be of help!
Reply
:iconpinerain:
PineRain Featured By Owner Mar 30, 2014  Hobbyist General Artist
This is really great! Thank you for addressing this!
Reply
:iconchrismasna:
ChrisMasna Featured By Owner Mar 30, 2014
Glad to help!
Reply
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