How should an antibiotic‑loaded cement spacer be used after removal of an infected joint prosthesis?

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Last updated: September 8, 2026 • View editorial policy

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Antibiotic-Loaded Cement Spacer Management After Infected Prosthesis Removal

After removing an infected joint prosthesis, place an antibiotic-impregnated cement spacer (either static or articulating) to manage dead space and deliver local antimicrobial therapy, followed by 4-6 weeks of IV antibiotics, then reimplant after an antibiotic-free period of 2-8 weeks. 1

Two-Stage Exchange Strategy

The two-stage exchange is the most commonly used approach in the United States for chronic prosthetic joint infection (PJI), with an 87% success rate 1. This involves:

First Stage: Resection and Spacer Placement

  • Remove all infected prosthetic components and cement
  • Perform thorough debridement of infected periprosthetic tissue
  • Place antibiotic-impregnated cement spacer (static or articulating) 1
  • The spacer serves dual purposes: manages dead space and delivers high-dose local antibiotics 2

Spacer Selection: Static vs. Articulating

Articulating spacers are preferred for most patients as they:

  • Allow joint mobility and easier ambulation
  • Maintain soft tissue tension
  • Facilitate easier second-stage reconstruction
  • May permit longer antibiotic-free periods without functional compromise 1, 3

Static spacers are reserved for:

  • Severe femoral or acetabular bone loss
  • Deficient abductor muscles
  • Risk of soft tissue damage 2, 3

Critical Caveat: Organism-Specific Considerations

Some panel members do NOT recommend spacers for:

  • MRSA infections
  • Small-colony variant infections
  • Fungal infections

These organisms may not be adequately eradicated with spacer use 1. This represents a minority opinion but warrants consideration in difficult cases.

Antibiotic Selection for Spacers

The antibiotics mixed into cement must be:

  • Heat-resistant (survives polymerization temperatures)
  • Water-soluble
  • Chemically stable in cement 2

Gentamicin and vancomycin are generally preferred 2. The antibiotic can be premixed or added by the surgeon intraoperatively 1.

Systemic Antibiotic Therapy

Administer 4-6 weeks of pathogen-specific IV antibiotics after spacer placement 1. While some recent case series report success with minimal IV therapy when using antibiotic-impregnated spacers, the IDSA panel does not currently recommend this abbreviated approach 1.

Timing of Reimplantation

Standard U.S. Protocol (Most Successful):

  • Complete 4-6 weeks of IV antibiotics
  • Observe an antibiotic-free period of 2-8 weeks
  • This delayed approach has been highly successful 1

Alternative European Approach:

  • Earlier reimplantation at 2-6 weeks while still on systemic antibiotics
  • Only for selected cases WITHOUT MRSA, enterococci, or multidrug-resistant gram-negatives 1

Early reimplantation within 3 weeks after resection shows higher failure rates 1—avoid this timing.

Pre-Reimplantation Assessment

Before second-stage surgery, obtain ESR and CRP to assess treatment success 1. However, recognize that persistently elevated inflammatory markers may not accurately predict persistent infection 1.

The panel does NOT endorse routine joint aspiration and culture before reimplantation in all patients, but consider it when clinical concern for persistent infection exists 1.

Ideal Candidates for Two-Stage Exchange

This strategy works best for patients with:

  • Chronic infections
  • Adequate bone stock
  • Medical fitness for multiple surgeries
  • Willingness to undergo at least 2 procedures 1

Patients with sinus tracts or difficult organisms (MRSA, enterococci, Candida) are particularly appropriate candidates for this approach 1.

Potential Complications

  • Spacer dislocation (articulating spacers)
  • Spacer fracture (both types) 2
  • Systemic antibiotic toxicity (rare) 1
  • Tissue damage from high local antibiotic concentrations 4

Monitor patients during the interval period for mechanical complications and signs of persistent infection.

References

2
Research

Spacers in two-stage strategy for periprosthetic infection.

Orthopaedics & traumatology, surgery & research : OTSR, 2025

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.