慢性骨髓炎时,骨组织中的残余腔含有脓液、炎性肉芽组织和死骨,是导致持续或反复感染的主要原因。骨感染灶周围为硬化骨和瘢痕化组织所包围,血循环差,抗生素很难进入骨感染灶。手术治疗的目的是切除所有死骨、病骨及瘢痕化的软组织,消灭残余死腔,争取在改善局部血行和清除术后炎症渗出的基础上,一期闭合创口。一、术前准备慢性骨髓炎可因长期感染,影响全身健康,应纠正贫血和低蛋白血症。检查肝肾功能,排除内脏淀粉样变。有窦道者应通畅引流。全身抗生素及局部清洁换药,可将感染减低到最低程度。取深部脓液作细菌培养以便找出敏感抗生素。有大块死骨者,必须待包壳形成达一定强度。对较深窦道可行碘油造影,了解走向、分支及范围。术前可用平头针插 Chronic osteomyelitis, the residual cavity of bone tissue containing pus, inflammatory granulation tissue and sequestrum, is the leading cause of persistent or recurrent infections. Bone infection around the sclerotic bone tissue and scar tissue surrounded by poor blood circulation, antibiotics difficult to enter the bone infection foci. The purpose of surgical treatment is to remove all the sequestrums, diseased bones and scars of soft tissue, destroy the residual dead space, strive to improve the local blood line and remove postoperative inflammatory exudation, based on a closed wound. First, preoperative preparation Chronic osteomyelitis may be due to long-term infection, affecting the health of the whole body, should be corrected anemia and hypoproteinemia. Check liver and kidney function, remove visceral amyloidosis. A sinus should be unobstructed drainage. Systemic antibiotics and local cleaning dressing, can reduce the infection to a minimum. Take deep pus for bacterial culture to find sensitive antibiotics. A large sequestrum who must be formed into the shell up to a certain intensity. Lipodystrophy of the deeper sinus feasible angiography, to understand the direction, branch and scope. Preoperative flat needle inserted