骨痂是什么 骨痂形成時間

骨(gu)(gu)(gu)(gu)痂(jia)是形(xing)成(cheng)于骨(gu)(gu)(gu)(gu)修復處的(de)(de)復合組(zu)(zu)(zu)(zu)織(zhi)。它在骨(gu)(gu)(gu)(gu)折后(hou)可呈現持續性和(he)漸(jian)進性的(de)(de)組(zu)(zu)(zu)(zu)織(zhi)類型轉變，血腫-肉芽(ya)組(zu)(zu)(zu)(zu)織(zhi)-鈣化組(zu)(zu)(zu)(zu)織(zhi)-編制(zhi)新生骨(gu)(gu)(gu)(gu)-，直(zhi)到恢復其原有(you)的(de)(de)剛度(du)。骨(gu)(gu)(gu)(gu)痂(jia)形(xing)成(cheng)是活骨(gu)(gu)(gu)(gu)刺激的(de)(de)反應，包括化學(xue)性、感染性、力(li)學(xue)不(bu)穩定(ding)等的(de)(de)反應，骨(gu)(gu)(gu)(gu)痂(jia)是固定(ding)不(bu)穩定(ding)的(de)(de)征象。

骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)愈合過(guo)程中的原始(shi)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)(jia)(jia)(jia)形(xing)(xing)成(cheng)期(qi)，在(zai)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)端內、外形(xing)(xing)成(cheng)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)組(zu)(zu)織逐(zhu)漸(jian)(jian)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)化(hua)(hua)，形(xing)(xing)成(cheng)新骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)，稱為(wei)膜內化(hua)(hua)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)。外面(mian)逐(zhu)漸(jian)(jian)向(xiang)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)端生長，彼此會合形(xing)(xing)成(cheng)梭形(xing)(xing)，稱為(wei)內骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)(jia)(jia)(jia)和外骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)(jia)(jia)(jia)。骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)斷端及髓腔(qiang)內的纖維組(zu)(zu)織亦(yi)逐(zhu)漸(jian)(jian)轉化(hua)(hua)為(wei)軟(ruan)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)組(zu)(zu)織，并隨軟(ruan)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)細(xi)胞(bao)的增生、鈣化(hua)(hua)而骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)化(hua)(hua)，稱為(wei)軟(ruan)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)內化(hua)(hua)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)，而在(zai)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)處形(xing)(xing)成(cheng)環狀骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)(jia)(jia)(jia)和髓腔(qiang)內骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)(jia)(jia)(jia)。兩(liang)部分骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)(jia)(jia)(jia)會合后，這些原始(shi)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)(jia)(jia)(jia)不(bu)斷鈣化(hua)(hua)而逐(zhu)漸(jian)(jian)加(jia)強，當其(qi)達(da)到足以抵抗肌收(shou)縮及成(cheng)角、剪力和旋轉力時，則骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)已達(da)到臨床愈合，一般約需 4 - 8 周。