Graphics Reference
In-Depth Information
of any joint, and because it is a necessary part in facilitating locomotion,
it needs to be strong enough to support the entire weight of the figure
and flexible enough to accommodate a wide range of movements. It
also needs to be able to provide stability to the figure throughout these
movements, some of which—running, jumping, hopping, lifting, and
swimming—can exert considerable strain on the joint. To assist in these
movements, the knee is protected by ligaments of great strength and
attached to a musculature capable of transmitting immense power. The
knee joint is classified as a hinge joint, though it looks like two condyloid
joints sitting alongside one another that fit with the two condyle joints of
the femur.
FIG 5.11
Knee joint. a: Side view.
b: Anterior view.
(a)
(b)
The Foot
The foot provides the stable platform on which the entire figure is supported
and plays a vitally important role in locomotion. Because of these roles
there is a need for great flexibility and strength and a capacity to tolerate
considerable stresses and sustain heavy and regular impacts.
