Debridement, Antibiotics and Implant Retention in Early Periprosthetic Joint Infection: A Retrospective Cohort Study

N/ACompletedNCT02087020

Danderyd Hospital51 enrolled

Overview

Introduction: Periprosthetic joint infection (PJI) is a common cause for reoperation after knee and hip arthroplasty surgery. Debridement, antibiotics and implant retention (DAIR) is recommended in early infections (\< 4 weeks) and stable implants. Aims: To define the success rate of DAIR in early infections and to identify predictors for success. Material and methods: In a retrospective cohort study we included patients with hip- or knee arthroplasties reoperated for an early PJI at Danderyd Hospital 2007-2012. Logistic regression analysis was used to identify risk factors affecting success rate. Primary outcome variable was the success of the DAIR treatment. Secondary outcome variable vas risk factors for treatment failure.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Direct Infection of Hip- and Knee Arthroplasty

Interventions

Debridement, antibiotics and implant retentionPROCEDURE

DAIR treatment protocol embodies an extensive surgical debridement and a radical excision of infected tissue. This is followed by exchange of modular components (articulating surfaces of the implant such as the femoral head, acetabular liner in total hip arthroplasty and the tibial insert, the polyethylene meniscus, in total knee arthroplasty). The wound is then copiously irrigated (\> 9 litre) with 0.9 % sodium chloride and then closed.

Eligibility

Sex: ALL

Medical Language ↔ Plain English

Inclusion Criteria: Patients treated with DAIR for early postoperative periprosthetic joint infection after knee- or hip arthroplasty surgery (\<4-6 weeks postoperatively) at our institution between 2007-01-01 and 2012-12-01. Exclusion Criteria: Chronic or late presenting periprosthetic joint infection (\>6 weeks postoperatively), acute hematogenous periprosthetic joint infection, when the periprosthetic joint infection diagnosis criteria according to American Musculoskeletal Infection Society (MSIS) 2011 definition of PJI definitions were not fulfilled and when the initial surgical treatment was with other treatment protocol than DAIR including one-stage revision and two -stage revision

Outcomes

Primary Outcomes

Successful treatment

The success rate, in terms of infection eradication without additional surgical methods, of debridement, antibiotics and implant retention in early postoperative periprosthetic joint infection..

Time frame: 6 year

Secondary Outcomes

Risk factors for treatment failure

Analyze of potential risk factors for treatment failure, age, gender, comorbidities i.e type 1 or 2 diabetes mellitus, renal insufficiency, dementia, systemic inflammatory disease, local or systemic infection, American Society of Anesthesiologists classification, virulence of infecting microbial, hospital stay, typ of arthroplasty, revision arthroplasty, and administration of antibiotics prior to debridement, antibiotics and implant retention treatment.