ator ▁ter es , ▁the ▁sens ibility ▁of ▁the ▁skin ▁surrounding ▁both ▁ul na ▁and ▁radius , ▁el bow ▁mob ility , ▁and ▁mob ility ▁of ▁the ▁ul na ▁and ▁radius ▁at ▁the ▁proxim al ▁radi ou ln ar ▁joint . ▁ ▁Ind ividual ▁patient ▁expect ations ▁and ▁motiv ations , ▁although ▁more ▁difficult ▁to ▁assess , ▁probably ▁play ▁a ▁major ▁role ▁in ▁out comes ▁as ▁well . ▁ ▁Adv antages ▁The ▁procedure ▁is , ▁in ▁this ▁time ▁and ▁age , ▁mostly ▁performed ▁on ▁patients ▁in ▁developing ▁countries ▁who ▁lack ▁the ▁means ▁to ▁obtain ▁expensive ▁prost hes es . ▁ ▁In ▁the ▁Western ▁world , ▁the ▁Kru ken berg ▁procedure ▁is ▁usually ▁reserved ▁for ▁blind ▁patients ▁with ▁bil ater al ▁am put ations , ▁because ▁it ▁can ▁provide ▁the ▁patient ▁with ▁tact ile ▁sens ation . ▁ ▁While ▁the ▁Kru ken berg ▁procedure ' s ▁poor ▁cos mes is ▁makes ▁it ▁very ▁rare , ▁it ▁does ▁preserve ▁proprio ception ▁and ▁s tere ogn osis ▁in ▁the ▁functional ▁st ump ▁and ▁so ▁allows ▁for ▁effective ▁man eu ver ing . ▁ ▁Once ▁this ▁procedure ▁is ▁performed , ▁it ▁does ▁not ▁pre clude ▁the ▁use ▁of ▁a ▁functional ▁prost h esis ▁giving ▁the ▁patient ▁the ▁option ▁to ▁use ▁either ▁functional ▁strategy . ▁ ▁While ▁the ▁operation ▁is ▁rarely ▁performed ▁in ▁the ▁modern ▁age , ▁patients ▁can ▁prefer ▁it ▁to ▁s oph istic ated ▁prost het ics , ▁as ▁in ▁one ▁case ▁study ▁of ▁a ▁Dutch ▁woman , ▁reported ▁in ▁ 2 0 0 2 .