An age is dawning, however, in which the capabilities of modern prostheses are broadening remarkably. Technological advances including increasingly miniaturized electronics, wireless communications and ever-refined positional sensors have enabled prosthetic developers to create next-generation bionic limbs with markedly enhanced degrees of freedom over prior models. Such prostheses have been demonstrated to markedly improve the energy expenditure of amputees who utilize them appropriately. Even more advanced prostheses are currently under development that incorporate the ability to provide active intrinsic limb control to facilitate complex motor actions such as dancing and balancing on one leg. In addition, prototype prosthetics are currently being developed that have the potential to offer sensory feedback - both tactile and positional - in a manner never before witnessed. Such prosthetics, while not yet available commercially, are presently being utilized in experimental settings.