骨痂是什么 骨痂形成時間

骨(gu)(gu)(gu)痂(jia)是形成于骨(gu)(gu)(gu)修復處(chu)的復合(he)組織(zhi)(zhi)(zhi)。它(ta)在骨(gu)(gu)(gu)折后(hou)可(ke)呈(cheng)現持續性(xing)(xing)和漸(jian)進性(xing)(xing)的組織(zhi)(zhi)(zhi)類型轉變，血(xue)腫-肉(rou)芽(ya)組織(zhi)(zhi)(zhi)-鈣化組織(zhi)(zhi)(zhi)-編制新生骨(gu)(gu)(gu)-，直(zhi)到恢復其原有(you)的剛度。骨(gu)(gu)(gu)痂(jia)形成是活(huo)骨(gu)(gu)(gu)刺激的反(fan)應(ying)，包括化學(xue)性(xing)(xing)、感(gan)染性(xing)(xing)、力學(xue)不穩定(ding)等的反(fan)應(ying)，骨(gu)(gu)(gu)痂(jia)是固(gu)定(ding)不穩定(ding)的征(zheng)象(xiang)。

骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)(zhe)愈(yu)合(he)(he)過程中的(de)原(yuan)始(shi)(shi)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)形成(cheng)期，在(zai)(zai)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)(zhe)端(duan)內、外(wai)形成(cheng)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)組織逐(zhu)(zhu)漸(jian)(jian)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)化(hua)，形成(cheng)新(xin)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)，稱(cheng)為(wei)膜內化(hua)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)。外(wai)面逐(zhu)(zhu)漸(jian)(jian)向骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)(zhe)端(duan)生長，彼此(ci)會(hui)(hui)合(he)(he)形成(cheng)梭形，稱(cheng)為(wei)內骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)和(he)(he)外(wai)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)。骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)(zhe)斷端(duan)及髓腔內的(de)纖維組織亦(yi)逐(zhu)(zhu)漸(jian)(jian)轉化(hua)為(wei)軟(ruan)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)組織，并隨軟(ruan)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)細胞(bao)的(de)增生、鈣(gai)(gai)化(hua)而骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)化(hua)，稱(cheng)為(wei)軟(ruan)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)內化(hua)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)，而在(zai)(zai)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)(zhe)處形成(cheng)環(huan)狀骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)和(he)(he)髓腔內骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)。兩部分骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)會(hui)(hui)合(he)(he)后，這些原(yuan)始(shi)(shi)骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)痂(jia)不斷鈣(gai)(gai)化(hua)而逐(zhu)(zhu)漸(jian)(jian)加強，當其達到(dao)(dao)足(zu)以抵抗(kang)肌收縮及成(cheng)角、剪(jian)力和(he)(he)旋轉力時，則骨(gu)(gu)(gu)(gu)(gu)(gu)(gu)折(zhe)(zhe)已達到(dao)(dao)臨床愈(yu)合(he)(he)，一般約(yue)需 4 - 8 周。