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Review
. 2021 Apr;45(4):847-855.
doi: 10.1007/s00264-021-04958-x. Epub 2021 Feb 8.

Evaluation and interpretation of prosthetic joint infection diagnostic investigations

Rihard Trebse  1   2 , Samo Roskar  3
Affiliations
Review

Evaluation and interpretation of prosthetic joint infection diagnostic investigations

Rihard Trebse et al. Int Orthop. 2021 Apr.

Abstract

Background: Total joint arthroplasty (TJA) is considered one of the most successful surgical procedures ever developed. It can successfully provide pain relief, restore joint function, and improve mobility and quality of life. Prosthetic joint infection (PJI) presents with a wide variety and severity of signs and symptoms. It remains a major threat to the outcome of TJA procedures and usually necessitates surgical intervention and prolonged courses of antibiotics. Inappropriate treatment of an unrecognized PJI usually ends with unacceptable and sometimes catastrophic results.

The aim: The understanding and evaluation of diagnostic investigations are extremely important to properly diagnose PJI, including frequently unrecognized low-grade infections, and to provide healthcare professionals with needed information for the care of patients affected by this condition. This article aims to review most of the methods available in PJI diagnostics, to emphasize the strengths and the weaknesses of each of them, and to provide a guideline on how to select the surgical treatment strategy based on the level of diagnostic certainty during the evaluation period. To safely accomplish this, it is crucial to be aware of the limitations of each diagnostic modality.

The focus: The emphasis will be on the use and interpretation of the core criteria for PJI diagnosis, including the pathognomonic sinus tract communicating with the implant, purulent synovial fluid, inflammation in the periprosthetic tissue, cell count with differential, microbial growth in the synovial fluid culture, tissue sample cultures, and sonication samples.

Keywords: Diagnostic criteria; Prosthetic joint infection; Prosthetic joint replacement; The algorithm.

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