摘要
骨水泥固定人工髋关节的缺陷是单体毒性、假体松动和骨质溶解、本组20个髋关节置换术后,随访6年,发现7个髋出现骨质溶解;以髋臼为主,其中1髋出现股骨头、颈、距骨质吸收.吸收区为纤维组织充填.骨质溶解导致假体松动和移位,其分离线平均为3±0.912mm.假体松动可能无临床症状.只有当松动并伴有移位时,髋关节才可能出现疼痛和弹响.作者探讨了骨水泥的发病因素.临床上应减少或避免应用.近年来微孔材料可能取代骨水泥.
Toxicity of monomer , loosening of prosthesis and osteolysis in the hip area arc the main drawbacks in using bone cement for fixation of artificial hip prosthesis . In our scries of 20 hip replacements which had a follow-up study of 6 years , osteolysis was seen centering around the acctabulum in 7 hips ,in which bone resorption was observed in the femoral head , neck and calcar in 1 hip . Meanwhile the resorption area was shown to be filled up with fibrous tissue It must be osteolysis that led to the loosening and displacement of the prosthesis with the separation lmc bang or, an average of 3 _ 0.912 mm . Occasionally , there were no symptoms relating to the loosening of the prosihesis ; however, pam and snapping were felt in the loosening and displaced prosthesis . Pathogenic factors in bone cement induced osteolysis arc discussed . Therefore , we suggest that the use of bone cement should be avoided or reserved for those cases in which secure fixation of the prosthesis would otherwise be unlikely . With the development of porous biomatcrials , we hope that someday they will supersede bone cement.
出处
《第四军医大学学报》
1991年第4期255-257,共3页
Journal of the Fourth Military Medical University
