sentences:  Despite months of hospitalization, his left leg required amputation, ending his climbing career and dream to climb Everest.A group of Nawang's American friends responded to his plight, and arranged for him to fly to California where he received a donation of his first sturdy prosthetic leg from the Orthopaedic Surgery Department of the University of California San Francisco (UCSF) in May 2001.He had arrived from Nepal on tattered crutches; a month later he returned walking strongly on two legs.