Related Experiment Video
Updated: Aug 22, 2026
Mouse Lumbar Vertebra Uniaxial Compression Testing with Embedding of the Loading Surface
Published on: December 1, 2023
Antimicrobial-loaded PMMA bone cement: time for good practice recommendations
Tariq Azamgarhi1,2, Herbert Gbejuade3, Ryan A Hamilton4
1Pharmacy Department, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK.
Abstract:
Antimicrobial-loaded PMMA bone cement has been used since the 1970s as both a fixation material and a local antimicrobial reservoir. Its clinical roles differ between prophylaxis in primary arthroplasty and treatment of established infection, particularly during revision surgery and through the use of temporary spacers. Commercially manufactured products offer more predictable handling, but bespoke admixing may be considered when resistant or unusual organisms are encountered. This Viewpoint argues that such practice requires clearer governance. Cement formulation, antimicrobial choice, dose and mixing technique influence elution, bioactivity, mechanical strength and toxicity. Local delivery may support antimicrobial stewardship, but prolonged low-level elution could theoretically select for resistance if poorly planned. We propose a cautious, evidence-informed framework to support multidisciplinary decision-making and the development of PMMA-specific antimicrobial guidance.
Insights
Polymethyl methacrylate (PMMA) bone cement delivers antimicrobials locally for infection control and fixation. This viewpoint advocates for evidence-based governance of bespoke admixing to optimize efficacy and prevent antimicrobial resistance.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
- Infectious Disease
Background:
- Polymethyl methacrylate (PMMA) bone cement serves as a dual-purpose material in orthopedic surgery since the 1970s, acting as both a fixation agent and a local antimicrobial delivery system.
- Its applications range from prophylactic use in primary arthroplasty to therapeutic interventions for established infections, notably in revision surgeries and via temporary spacers.
Purpose of the Study:
- To critically evaluate the current practices of using antimicrobial-loaded PMMA bone cement, particularly bespoke admixing.
- To highlight the need for enhanced governance and a structured framework for decision-making regarding its clinical application.
- To emphasize the importance of evidence-based guidance for optimizing the use of PMMA bone cement in managing orthopedic infections.
Main Methods:
- This viewpoint synthesizes existing knowledge and clinical experience regarding antimicrobial-loaded PMMA bone cement.
- It analyzes factors influencing cement performance, including formulation, antimicrobial selection, dosage, and mixing techniques.
- The discussion addresses the potential benefits of local antimicrobial delivery against the risks of resistance development.
Main Results:
- Commercially available PMMA bone cements offer standardized properties, while bespoke admixing allows for tailored antimicrobial profiles, especially for resistant organisms.
- Critical factors such as cement formulation, antimicrobial choice, dose, and mixing methods significantly impact elution kinetics, bioactivity, mechanical integrity, and potential toxicity.
- Prolonged, low-level antimicrobial elution, if not carefully managed, poses a theoretical risk of selecting for antimicrobial resistance.
Conclusions:
- Clearer governance and a multidisciplinary, evidence-informed framework are essential for the safe and effective use of antimicrobial-loaded PMMA bone cement.
- Bespoke admixing requires careful consideration of numerous variables to ensure optimal outcomes and support antimicrobial stewardship.
- Developing specific guidance for PMMA-based antimicrobial strategies is crucial for maximizing clinical benefits while mitigating risks like resistance.
