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. 2025 May 6:12:1522588.
doi: 10.3389/fsurg.2025.1522588. eCollection 2025.

Comparison of early clinical outcomes between CR and PS prostheses in total knee arthroplasty for rheumatoid arthritis patients - a retrospective cross-sectional study

Haoyuan Ding #  1   2 , Dapeng Han #  2 , Nanshan Ma #  1   2 , Chenxin Gao  2 , Jie Yao  2 , Guilin Ouyang  2
Affiliations

Comparison of early clinical outcomes between CR and PS prostheses in total knee arthroplasty for rheumatoid arthritis patients - a retrospective cross-sectional study

Haoyuan Ding et al. Front Surg. .

Abstract

Objective: To compare the early clinical outcomes of posterior cruciate ligament-retaining (CR) and posterior stabilized (PS) knee prostheses in total knee arthroplasty for patients with rheumatoid arthritis.

Methods: A retrospective analysis was conducted on 74 patients with rheumatoid arthritis (RA) who underwent unilateral total knee arthroplasty (TKA) from January 2021 to December 2022. Among these, 39 patients received CR prostheses (CR group), while 35 received PS prostheses (PS group). Data on operation time, intraoperative blood loss, hospital stay, preoperative and postoperative Visual Analogue Scale (VAS) scores, American Knee Society Score (AKSS), Functional Joint Score-12 (FJS-12) scores, Health Assessment Questionnaire scores (HAQ) and postoperative complications were recorded and compared between the two groups.

Results: All 74 patients successfully completed the surgery without complications. The average operation time for the CR group was shorter than that of the PS group, with no statistically significant differences in intraoperative blood loss or hospital stay. Both groups showed improved postoperative AKSS scores, VAS scores, and HAQ Scores compared to preoperative levels. Between-group comparisons showed no statistical differences in postoperative AKSS, VAS, HAQ scores. However, the CR group had significantly higher FJS-12 scores at 6 and 12 months postoperatively compared to the PS group.

Conclusion: Both CR and PS prostheses can achieve good clinical outcomes in TKA for RA patients. Compared to PS prostheses, CR prostheses may provide better knee proprioception postoperatively, as indicated by higher FJS-12 scores at 6 and 12 months postoperatively.

Keywords: CR prosthesis; PS prosthesis; retrospective study; rheumatoid arthritis; total knee arthroplasty.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
A 59-year-old female with a 13-year history of rheumatoid arthritis (RA). Preoperative imaging and intraoperative exploration revealed an intact and stable PCL, prompting the selection of a CR prosthesis for TKA. ①–②: the preoperative x-ray findings, ③: the preoperative MRI results, ④–⑤: the intraoperative exploration, ⑥–⑦: the postoperative follow-up x-ray results.
Figure 2
Figure 2
A 70-year-old female with a 31-year history of rheumatoid arthritis (RA). Preoperative imaging and intraoperative exploration revealed an incomplete and unstable PCL, prompting the selection of a PS prosthesis for TKA. ①–②: the preoperative x-ray findings, ③: the preoperative MRI results, ④–⑤: the intraoperative exploration, ⑥–⑦: the postoperative follow-up x-ray results.
Figure 3
Figure 3
Changes in outcome measures at different time points after surgery in Two patient groups (a: VAS score, b: AKSS score, c: HAQ score).
See this image and copyright information in PMC

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References

    1. Black RJ, Cross M, Haile LM, Culbreth GT, Steinmetz JD, Hagins H, et al. Global, regional, and national burden of rheumatoid arthritis, 1990–2020, and projections to 2050: a systematic analysis of the global burden of disease study 2021. Lancet Rheumatol. (2023) 5(10):e594–610. 10.1016/S2665-9913(23)00211-4 - DOI - PMC - PubMed
    1. American Joint Replacment Registry (AJRR). The tenth annual report of the AJRR on hip and knee arthroplasty. Am Acad Orthopaedic Surgeeons. (2023):1–125.
    1. Cordtz R, Odgaard A, Kristensen LE, Overgaard S, Dreyer L. Risk of medical complications following total hip or knee arthroplasty in patients with rheumatoid arthritis: a register-based cohort study from Denmark. Semin Arthritis Rheum. (2020) 50:30–5. 10.1016/j.semarthrit.2019.06.007 - DOI - PubMed
    1. Yamashita F, Funakoshi N, Mori D, Kizaki K. Long-term outcomes and duration of outdoor ambulation following primary total knee arthroplasty in patients with rheumatoid arthritis. J Orthop Sci. (2022) 27:414–9. 10.1016/j.jos.2021.01.014 - DOI - PubMed
    1. Goodman SM, Springer BD, Chen AF, Davis M, Fernandez DR, Figgie M, et al. 2022 American college of rheumatology/American association of hip and knee surgeons guideline for the perioperative management of antirheumatic medication in patients with rheumatic diseases undergoing elective total hip or total knee arthroplasty. J Arthroplasty. (2022) 37(9):1676–83. 10.1016/j.arth.2022.05.043 - DOI - PubMed

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