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I have a generated mesh and set of bones from a makehuman model but it created two bones in the shin.

How do I merge the two selected bones into one bone but keep the skeleton intact, i.e. the knee and foot where it should be.

model with rig two selected bones should be merged

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    $\begingroup$ Saw this title on Hot Network Questions, and I wondered, when did we get a MadScience.Stackexchange site? $\endgroup$ Oct 20 '15 at 14:46
  • $\begingroup$ @MasonWheeler LOL. Welcome to blender.SE ( 3D software.) PS there is a MadScience.SE. $\endgroup$
    – David
    Oct 20 '15 at 15:44
  • $\begingroup$ @David: Oh, so now we're putting bones in a blender? Out of context, that sounds really creepy! ;) $\endgroup$ Oct 20 '15 at 15:46
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    $\begingroup$ @MasonWheeler We also deal with severed monkey heads and such. $\endgroup$ Oct 20 '15 at 15:46
  • $\begingroup$ and python smoothies! $\endgroup$ Oct 20 '15 at 15:47
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The universal way to delete something in Blender and merge surrounding elements to a single object is to use Dissolve (Ctrl+X). It works for meshes, nodes, bones and grease pencil points.

Dissolve

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    $\begingroup$ I like this better than Alt-M $\endgroup$ Nov 11 '15 at 18:29
  • $\begingroup$ Is there an advantage of doing it this way as opposed to the ALT M way? $\endgroup$ Nov 12 '15 at 16:14
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    $\begingroup$ @ChrisStone With this way, your model's weights are much less likely to get screwed up. $\endgroup$
    – Bradman175
    Sep 17 '16 at 4:37
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With the two bones selected like in the picture in your question, simply press AltM.
That will merge the two bones and take care of the bone relations.

animated gif


Or You could achieve the same thing in more steps by deleting the two bones, and "filling" a bone between the two ends that are left. Then going and editing the Bone Parent and checking Connected for the top bone.

enter image description here

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  • $\begingroup$ Thanks a lot! I did try ALT M but I was in pose mode and I was wondering why nothing was happening, Doh! By the way, how did you make those neat little animations? $\endgroup$ Oct 20 '15 at 18:03
  • $\begingroup$ @ChrisStone sorry if I never got back to to (or if I did you can just ignore this) Read What is the process for creating gifs for questions and answers? I wrote up my whole process there. $\endgroup$
    – David
    Jun 4 '16 at 16:55
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I'm using Blender 9.23.5 (the newest one) and for me neither CTRL+X nor ALT+M do anything in Edit mode (or in any mode). By simply pressing the X key however I get the option to diffuse however this doesn't do anything when I click on it. Is there a non-shortcut way to achieve this? I also appreciate the second method suggested by Ortho, but when I do that the bone disappears entirely in my case. I don't know whether it's due to a corrupted file or something.

EDIT: I've figured it out - with the last method you just need to make sure that the parent bone is the next bone up in the hirearchy (you skip the bone that's going to be replaced and you choose the next closest one from the top as the parent). The shortcuts that use CTRL or ALT still don't seem to work for me for some reason.

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