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In 1917 he developed an operation known today as the "Krukenberg procedure".^[1][2] This procedure involves separation of the ulna and radius bones in order to convert a below-elbow amputation stump into a "sensory forceps" that receives its strength from the pronator teres muscle. Among his written works was a 1913 book on physiognomy titled Gesichtsausdruck des Menschen.

Gathered at:  http://en.wikipedia.org/wiki/Hermann_Krukenberg

Initially after traumatic bilateral forearm amputation [the patient] was provided with mechanical prostheses. Eventually she stopped using them because she chose to use her bare stumps as pincers. She explained that being able to feel helped her a lot in her tasks... an excellent functional result was obtained, from both the surgical and the rehabilitation point of view. The patient lives with her family, takes care of the household, and does art and crafts, which she is currently selling, and is very happy with the procedure. A year and a half has gone by and she is still gaining dexterity and strength.^[3] The patient in question also requested the procedure be completed on her other arm.^[3]

Continue reading at:  http://en.wikipedia.org/wiki/Krukenberg_procedure