Cook S D, Scheller A D, Anderson R C, Haddad R J
Clin Orthop Relat Res. 1986 Jan(202):147-51.
A retrieved uncemented, porous-coated human patellar component was evaluated histologically and microradiographically. The metal portion of the component and porous coating were made of cobalt--chromium-based alloy. Because of adhesive capsulitis and inadequate knee flexion, the patient had revision surgery 11 months after the original total knee arthroplasty. Clinically, the device was not grossly loose. Contact microradiography of the porous material showed no calcified tissue ingrowth. Undecalcified histologic sections demonstrated only fibrous tissue ingrowth, with obvious bone-resorptive activity as well as numerous multinucleated giant cells adjacent to the porous metal.
对一枚取出的非骨水泥型、多孔涂层人工髌骨关节组件进行了组织学和显微放射学评估。该组件的金属部分和多孔涂层由钴铬基合金制成。由于粘连性囊炎和膝关节屈曲不足，患者在初次全膝关节置换术后11个月接受了翻修手术。临床上，该装置未见明显松动。多孔材料的接触式显微放射成像显示无钙化组织长入。未脱钙组织学切片仅显示纤维组织长入，伴有明显的骨吸收活性以及多孔金属附近有大量多核巨细胞。
