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Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
Intravenous methylmethacrylate following cemented total hip arthroplasty
E Brandser1, G el-Khoury, M Riley
1Department of Radiology, University of Iowa College of Medicine, Iowa City 52242, USA.
Skeletal Radiology
|October 1, 1995
Summary
Intraoperative cement extrusion during total hip arthroplasty (THA) can be concerning. However, intravenous methylmethacrylate is a benign finding, distinct from dangerous cortical perforations, identifiable through specific imaging features.
Area of Science:
- Orthopedic Surgery
- Radiology
- Biomaterials Science
Background:
- Total hip arthroplasty (THA) utilizes cemented and noncemented techniques, each with unique risks.
- Cemented THA carries risks of perioperative complications, including cement implantation syndrome and cement extrusion.
- Cement extrusion can result from femoral canal overreaming or cortical perforation, increasing fracture risk.
Purpose of the Study:
- To differentiate between intravenous methylmethacrylate and cortical perforation following THA.
- To describe the imaging characteristics that distinguish these two cement extrusion scenarios.
- To highlight the clinical significance of accurately identifying intravenous methylmethacrylate.
Main Methods:
- Retrospective review of four cases of intravenous methylmethacrylate after THA.
- Analysis of imaging features (e.g., CT, MRI) to characterize cement location and extent.
- Comparison of imaging findings with known features of cortical perforation.
Main Results:
- Intravenous methylmethacrylate was identified in four THA patients.
- Specific imaging patterns were observed for intravenous methylmethacrylate, distinct from cortical perforations.
- Intravenous methylmethacrylate was not associated with long-term complications.
Conclusions:
- Accurate differentiation between intravenous methylmethacrylate and cortical perforation is crucial after THA.
- Imaging plays a key role in identifying benign cement extrusion (intravenous methylmethacrylate) versus concerning cortical perforation.
- Recognizing intravenous methylmethacrylate avoids unnecessary interventions for a non-pathological finding.
