ArticleScientific reports2022
Immune cell populations differ in patients undergoing revision total knee arthroplasty for arthrofibrosis.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
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Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.
- Systematic review of extracellular vesicle-derived microRNAs involved in organ fibrosis: implications for arthrofibrosis therapy.Journal of translational medicine · 2025Pooled it
- Arthrofibrosis After Total Knee Arthroplasty: Biological Mechanisms, Diagnosis, and Treatment: An International Consensus Symposium.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2026Article
- Chronic Pain and Stiffness After Total Knee Arthroplasty: A Comprehensive, Phenotype-Based Review of Mechanisms, Diagnosis and Management.Journal of clinical medicine · 2026Review
- Human Knee as an Organ: Joint Tissue Collection, Processing, and Scoring for Multimodal Analyses.Laboratory investigation; a journal of technical methods and pathology · 2026Review
- New Clues to the Challenge of Knee Arthrofibrosis: From Molecules to Therapies.The Journal of the American Academy of Orthopaedic Surgeons · 2026Review
- Risk Factors for Arthrofibrosis in Schenck KD 3 and 4 Multiligament Knee Injury Patients.Orthopaedic journal of sports medicine · 2025Article
- CCN2 mediates fibroblast-macrophage interaction in knee arthrofibrosis based on single-cell RNA-seq analysis.Bone research · 2025Article
- Single-cell and bulk tissue sequencing unravels the heterogeneity of synovial microenvironment in arthrofibrosis.iScience · 2023Article
- Profiling the Immune Response to Periprosthetic Joint Infection and Non-Infectious Arthroplasty Failure.Antibiotics (Basel, Switzerland) · 2023Review
- Activated mast cells in periprosthetic joint infection-associated tissue.Frontiers in immunology · 2023Article
Corrections and comments
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Authors and funding
15 authors at 3 institutions in 1 country.
Funding
Abstract
Arthrofibrosis following total knee arthroplasty (TKA) is a debilitating condition typically diagnosed based on clinical findings. To gain insight into the histopathologic immune cell microenvironment of arthrofibrosis, we assessed the extent of tissue fibrosis and quantified immune cell populations in specific tissue regions of the posterior capsule. We investigated specimens from three prospectively-collected, matched cohorts, grouped as patients receiving a primary TKA for osteoarthritis, revision TKA for arthrofibrosis, and revision TKA for non-arthrofibrotic, non-infectious reasons. Specimens were evaluated using hematoxylin and eosin staining, picrosirius red staining, immunofluorescence, and immunohistochemistry with Aperio®-based digital image analysis. Increased collagen deposition and increased number of α-SMA/ACTA2 expressing myofibroblasts were present in the arthrofibrosis group compared to the two non-arthrofibrotic groups. CD163 + macrophages were the most abundant immune cell type in any capsular sample with specific enrichment in the synovial tissue. CD163 + macrophages were significantly decreased in the fibrotic tissue region of arthrofibrosis patients compared to the patients with primary TKA, and significantly increased in adipose tissue region of arthrofibrotic specimens compared to non-arthrofibrotic specimens. Synovial CD117 + mast cells were significantly decreased in arthrofibrotic adipose tissue. Together, these findings inform diagnostic and targeted therapeutic strategies by providing insight into the underlying pathogenetic mechanisms of arthrofibrosis.
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