17 June 2024 : Clinical Research
Epidemiology and Risk Factors for Revision Total Knee Arthroplasty in Chinese Patients: A Retrospective Study in Changchun, Jilin Province, China
Yang Sun
1ABCDEFG, Jichao Liu 1ABCDEFG, Weibo Jiang1ABDE, Chao Gao2ACDE, Yichun Qiao2ACDE, Yanguo Qin 1ABDEF, Jincheng Wang 1ABCDEFG*
DOI: 10.12659/MSM.943681
Med Sci Monit 2024; 30:e943681
Table 1 Definitions of reasons for total knee arthroplasty revision.
| Reason | Definition |
|---|---|
| Infection | Based on Musculoskeletal Infection Society criteria: as two positive periprosthetic cultures with phenotypically identical organisms, or a sinus tract communicating with the joint or having three of the following minor criteria: elevated serum CRP, elevated synovial fluid white blood cell count, elevated synovial fluid polymorphonuclear neutrophil percentage, positive histological analysis of periprosthetic tissue or a single positive culture [,]36 |
| Aseptic loosening | Loosening without signs of infection; polyethylene wear with emerging bone loss but no complete loosening also was included in this group []32 |
| Stiffness | Flexion contracture of ≥15 degrees and/or <75 degrees of flexion [38] |
| Periprosthetic fracture | Assessed radiographically and if necessary with computed tomography []22 |
| Instability | A clinical diagnosis with pain and instability experienced by the patient caused by a collateral ligament laxity or PCL insufficiency without any sign of component malpositioning []12 |
| Extensor mechanism disruption | Diagnosed by positive history and suitable physical examination []22 |
| Malposition | Presence of clear malpositioning or malrotation of one or both components, causing pain []32 |
| CRP – c-reactive protein; PCL – posterior cruciate ligament. | |