Sunday 24 November 2013

Anthro leg structure 3

Following from the previous post... now that I know to turn Google image enhance off so that it stops turning all my images black...

Unguligrade legs on the left and digitigrade on the right.

Another way to think about the tapering limb as it becomes more distal is to think about 'muscular bulk', 'taper' and 'tendon'. We have the main muscle bulk at the origin of the limb, the muscle tapers down towards the tendon and finally terminates as just tendon onto the bone. This can be applied to any individual muscle of a limb (fig. 2) or also to the limb as a whole (fig. 1). Drawing a limb with this in mind ensures it stays in proportion.

The proportions of the limb are indicated by the measuring arrows. The set of legs on the left have a shorter thigh in proportion to the more distal, (further from the body) part of the limb; this limb configuration would offer the character the ability to run faster. As I touched on this in a previous post, a longer distal portion of the limb offers a greater stride distance and holds more elastic strain energy, quickening the limbs movement. The legs of the digitigrade on the right have a proportion of thigh to lower leg almost 1:1, similar to us as plantigrades. This would offer more limb stability rather than speed with the joints being less prone to stresses or twisting.

One thing to note is that the stability and speed configurations can apply to both digitigrades and unguligrades; it would simply be species and character dependent.

4 comments:

  1. How would things like agility and cornering be affected by digitigrade and unguligrade leg conformation do you think?

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  2. What would the foot and track of a three toed unguligrade look like if the toes were close together? Like a cervine confirmation than tapir.

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    1. Hi Kornwolf, Thanks for your question ^^ I was actually going to put together a bunch more sketches and ideas on different leg confirmations. So rather than try and explain i'll add your 3-toed unguligate to those I was going to draw for next week.

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  3. Hi! I'm a fantasy artist and I'm currently designing a Faun like character with horse like attributes. He has horse like legs and hooves for feat.

    How would bipedal horse legs work in regards of mobility? Would he be able to run or would he be slow and unbalanced? It seems like equine legs are built to work in fours not two's.

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