Bone Inverse Kinematics

Bone inverse kinematics, is the process of applying inverse kinematics not to the model, but to the bone structure within the model that drives placement, directly. A single bone in a hierarchical bone structure is placed where it needs to be. E.g., one controlling the palm of a model. After that bone's orientation placement, the inverse kinematics means that each bone connected to it all the way back to the main parent, moves in position and angle to accommodate that bone's change in position and orientation.

In other words, as the hand moves forwards, the arm and shoulder bones move to accommodate that movement.

See Also: Inverse Kinematics, Posturography, Kinematic Motion Estimation, Forward Kinematics

Below, we offer a selection of links from our resource databases which may match this term.

Bone Inverse Kinematics Kinematic Motion Estimation Kinematics

Layered Construction

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Augmented Reality Hip Replacement
Usually, creation of a prosthetic limb errs on the lighter side, sacrificing capability for lightness. This is because until now, it has not been possible to examine the surviving bone in enough detail to safely screw a prosthetic into the bone.

Large Image Display: Prosthetic Jaw Hinging
One of the most important aspects when working with any skeletal system, is the joint where bones connect. If you don't get this area right, then bone will grind against prosthesis, and the bone is likely to take critical damage first. You inflame a joint, that did not have a problem in the first place, and spread further complications throughout the body.

Hydroxyapatite Bone Grafts
Pennsylvania State University researcher Henry J. Donahue, Professor of Orthopaedics and Rehabilitation, Penn State College of Medicine, has found a use for the inorganic material hydroxyapatite, in covering sterilized implants so that they form a natural bond with on-site bone, fusing together over time.

World of World of Whatever
The following clip from Onion News Network, is an obvious spoof - its all that onion ever produce, but at the same time, this one may cut closer to the bone than perhaps we would like.

Large Image Display: Connecting Teeth to Artificial Bone
A much more in-depth look at the concept of designing multiple implants inside the body, so you can guarantee they will always connect perfectly, as demonstrated by the prototype LayerWise jaw and its successive implants.

Infection-Proof Prosthetic Paw
A Belgian German Shepard dog called Storm, has become the first person to be fitted with a prosthetic implant which fits into the bone and sticks through the skin with no risk of infection to the animal.

Modeling the Figure in Clay

The parts specific to clay working are irrelevant to the virtual developer, but the general techniques and practices are invaluable if you choose to take this route, and create anatomically believable avatars. Ideal for working with weighted bone animation systems.

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