Grimm Nathan L, Henderson Robert A, Kavolus Joseph J, Millikan Patrick D, Lachiewicz Paul F
Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA.
Department of Orthopaedic Surgery, Durham VA Medical Center, Durham, NC, USA.
Arthroplast Today. 2016 Feb 26;2(2):45-47. doi: 10.1016/j.artd.2016.01.005. eCollection 2016 Jun.
A 62-year-old man presented with the acute, atraumatic onset of pain 3 years after uncemented right total knee arthroplasty. He complained of new mechanical locking with the knee held in extension on examination and unable to flex the knee. On the plain radiographs, the patellar component peg was fractured and the plate was dislocated. The knee was immobilized, and revision to a cemented 3-peg component was performed. Fracture of a single-peg, tantalum-backed uncemented patellar component has not been described. Clinical suspicion for this should be given in the setting of acute locking. We recommend revision with a cemented polyethylene component.
一名62岁男性在非骨水泥型右全膝关节置换术后3年出现急性、无创伤性疼痛。他主诉检查时膝关节伸直时出现新的机械性卡顿，无法屈曲。X线平片显示，髌骨部件的固定栓断裂，钢板脱位。膝关节予以制动，并进行了骨水泥型三固定栓部件翻修。单固定栓钽背衬非骨水泥型髌骨部件骨折尚未见报道。在急性卡顿时应考虑到这种情况。我们建议使用骨水泥型聚乙烯部件进行翻修。
