假肢(zhi)(zhi)的(de)(de)優(you)勢在(zai)踝關(guan)節的(de)(de)設計上也由過去的(de)(de)單向運動(dong)(dong)(dong)（趾跗方向）改變為(wei)可同時實現側(ce)向運動(dong)(dong)(dong)，大腿(tui)假肢(zhi)(zhi)，稱之為(wei)“萬向腳”，以(yi)適(shi)應截(jie)肢(zhi)(zhi)者在(zai)不平路面(mian)的(de)(de)行走和活動(dong)(dong)(dong)量較大的(de)(de)運動(dong)(dong)(dong)。假肢(zhi)(zhi)是肢(zhi)(zhi)體(ti)殘(can)疾人重要的(de)(de)輔助(zhu)裝(zhuang)置之一，可以(yi)幫助(zhu)他們和正常(chang)人一樣工作(zuo)、學(xue)習、生活。假肢(zhi)(zhi)隨著(zhu)信息(xi)科(ke)(ke)學(xue)、傳感技(ji)(ji)術、材料科(ke)(ke)學(xue)及其(qi)相關(guan)科(ke)(ke)學(xue)技(ji)(ji)術的(de)(de)發展，假肢(zhi)(zhi)的(de)(de)性能得到了很大提高(gao)，假肢(zhi)(zhi)技(ji)(ji)術的(de)(de)研究也取得了很大進(jin)展。

正確的使(shi)(shi)用(yong)假(jia)(jia)肢(zhi)(zhi)(zhi)(zhi)(zhi)脊柱側(ce)彎和腰痛(tong)產生這(zhe)(zhe)種(zhong)(zhong)現(xian)(xian)象(xiang)的原(yuan)因一般是(shi)在裝配下肢(zhi)(zhi)(zhi)(zhi)(zhi)假(jia)(jia)肢(zhi)(zhi)(zhi)(zhi)(zhi)時高度不合(he)適，標(biao)準高度應該是(shi)健肢(zhi)(zhi)(zhi)(zhi)(zhi)側(ce)和假(jia)(jia)肢(zhi)(zhi)(zhi)(zhi)(zhi)側(ce)等(deng)高或(huo)者兩者之間(jian)的差距不能(neng)超過1厘(li)米。殘(can)(can)(can)肢(zhi)(zhi)(zhi)(zhi)(zhi)的出(chu)現(xian)(xian)這(zhe)(zhe)種(zhong)(zhong)情(qing)況主要(yao)是(shi)因為殘(can)(can)(can)肢(zhi)(zhi)(zhi)(zhi)(zhi)和假(jia)(jia)肢(zhi)(zhi)(zhi)(zhi)(zhi)接(jie)(jie)受腔內沒有做好衛生清潔工作(zuo)，導致(zhi)殘(can)(can)(can)肢(zhi)(zhi)(zhi)(zhi)(zhi)皮膚被(bei)細菌。如(ru)果(guo)出(chu)現(xian)(xian)這(zhe)(zhe)類一定要(yao)立即停止使(shi)(shi)用(yong)假(jia)(jia)肢(zhi)(zhi)(zhi)(zhi)(zhi)就醫。殘(can)(can)(can)肢(zhi)(zhi)(zhi)(zhi)(zhi)末端(duan)軟組織淋巴瘀(yu)滯(zhi)性這(zhe)(zhe)種(zhong)(zhong)癥狀不常(chang)出(chu)現(xian)(xian)，但是(shi)也要(yao)預防，方(fang)法(fa)是(shi)大腿或(huo)者小腿假(jia)(jia)肢(zhi)(zhi)(zhi)(zhi)(zhi)密閉(bi)式接(jie)(jie)受腔一定要(yao)與殘(can)(can)(can)肢(zhi)(zhi)(zhi)(zhi)(zhi)接(jie)(jie)觸。如(ru)果(guo)已經出(chu)現(xian)(xian)瘀(yu)滯(zhi)性，一定要(yao)立即停止使(shi)(shi)用(yong)假(jia)(jia)肢(zhi)(zhi)(zhi)(zhi)(zhi)，并且使(shi)(shi)用(yong)彈(dan)力繃帶(dai)包扎，必要(yao)時一定要(yao)熱敷或(huo)者接(jie)(jie)受一些物理(li)。

假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)的分類殼(ke)式假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)殼(ke)式假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)又稱為外(wai)骨骼式假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)。殼(ke)式假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)是由殼(ke)體承擔假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)的外(wai)力(li)，且(qie)殼(ke)體外(wai)形(xing)制成(cheng)人(ren)體形(xing)狀的假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)。傳統(tong)假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)都是殼(ke)式假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)，多(duo)用木材、皮革、鋁板或塑(su)料制作(zuo)。假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)的優(you)勢(shi)硅膠材料也(ye)已用于制作(zuo)假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)手(shou)套(tao)，手(shou)指假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)，使(shi)假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)手(shou)看起來更(geng)有肉感、更(geng)逼真。它也(ye)可(ke)望(wang)用于制成(cheng)“人(ren)造皮膚”，安徽假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)，使(shi)假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)的外(wai)表與(yu)人(ren)體皮膚無(wu)異。現代科學(xue)技(ji)術(shu)的發展，計算機技(ji)術(shu)的普及，為假(jia)(jia)(jia)(jia)(jia)(jia)(jia)(jia)肢(zhi)(zhi)制作(zuo)的自動(dong)化創造了條件(jian)。