Infection risk stratification in total kneea joint arthroplasty using a new scoring system

Prabhudev Prasad Purudappa, Prasanth J. Sudevan, Jayadev Chandrasekharan, Senthil N. Sambandam, Varatharaj Mounasamy, Sushruthi Varatharaj, Om P. Sharma

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Periprosthetic joint infection (PJI) is a catastrophic complication of total knee arthroplasty (TKA) adding significant costs to the health care system with increasing morbidity and mortality. The goal of this study was to develop a prognostic scoring system that could risk-stratify patients undergoing TKA for the risk of PJI. The study included 150 patients who underwent primary TKA from June 2012 to February2016. There were 60 patients in group I who were not risk stratified using the scoring system, while 90 patients were assigned to group II and were prospectively assigned scores based on the scoring system. Points were assigned for each pre-op variable and a scoring chart was developed. Group II patients scoring 4 or more were counseled to optimize their modifiable risk factors before proceeding with surgery. Retrospective chart review was donefor patients in group I to find out their risk score for the study purpose. Nine out of 60 patients in group I were found to have score above 4 based on the chart review, of which 4 patients got infected (P<0.05). None of the group II patients got infected after TKA. In conclusion, our scoring system is an objective scoring system for preoperative risk stratification of patients undergoing TKA, thus helping identification and optimization of the risk factors preoperatively to decrease the risk of PJI.

Original languageEnglish (US)
Article number8394
Pages (from-to)76-82
Number of pages7
JournalOrthopedic Reviews
Issue number2
StatePublished - 2020
Externally publishedYes


  • Prosthetic joint infection
  • Risk stratification score
  • Total knee arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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