Scholarlink

<p>A 81-year-old woman with chronic periprosthetic knee infection underwent implantation of a temporary articulating PROSTALAC spacer following prosthesis removal. Over the ensuing 3&#xa0;months, she developed worsening mechanical symptoms including instability, clicking, and difficulty bearing weight. Radiographs and MRI demonstrated a transverse fracture through the femoral component of the spacer with cement fragmentation and malalignment. Revision surgery with replacement of the fractured spacer led to resolution of symptoms and improved postoperative function. This case highlights the limited structural durability of polymethylmethacrylate (PMMA)-based articulating spacers during prolonged implantation and emphasizes the importance of imaging evaluation when new mechanical symptoms arise.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Fracture of a temporary PROSTALAC knee spacer leading to mechanical symptoms after prolonged use

  • 期刊论文

  • 发表日期：

    2026年2月18日

查看全文
  • Young Ju Song

摘要

A 81-year-old woman with chronic periprosthetic knee infection underwent implantation of a temporary articulating PROSTALAC spacer following prosthesis removal. Over the ensuing 3 months, she developed worsening mechanical symptoms including instability, clicking, and difficulty bearing weight. Radiographs and MRI demonstrated a transverse fracture through the femoral component of the spacer with cement fragmentation and malalignment. Revision surgery with replacement of the fractured spacer led to resolution of symptoms and improved postoperative function. This case highlights the limited structural durability of polymethylmethacrylate (PMMA)-based articulating spacers during prolonged implantation and emphasizes the importance of imaging evaluation when new mechanical symptoms arise.