PMID- 36349932 OWN - NLM STAT- MEDLINE DCOM- 20221215 LR - 20221221 IS - 1552-3365 (Electronic) IS - 0363-5465 (Linking) VI - 50 IP - 14 DP - 2022 Dec TI - RANTES Concentration at the Time of Surgery Is Associated With Postoperative Stiffness in Patients Undergoing ACL Reconstruction. PG - 3838-3843 LID - 10.1177/03635465221131805 [doi] AB - BACKGROUND: Patients undergoing anterior cruciate ligament (ACL) reconstruction have been shown to be at risk for postoperative arthrofibrosis. Diagnostic biomarkers associated with the development of postoperative stiffness are unknown. HYPOTHESIS: Biomarkers found in the synovial fluid at the time of surgery are associated with the development of postoperative arthrofibrosis in a cohort of patients undergoing ACL reconstruction. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: Patients undergoing ACL reconstruction were prospectively enrolled. Synovial fluid was collected before surgical incision. A cohort of patients with postoperative stiffness requiring manipulation under anesthesia (MUA) and/or lysis of adhesions (LOA) was retrospectively identified. Matching of cases to controls was performed using a 1:2 pair matching algorithm. Risk factor-adjusted single-biomarker and multivariable models were used to assess the association of synovial fluid biomarkers with postoperative stiffness requiring MUA/LOA. Stepwise logistic regression controlling for clinical risk factors was used to identify biomarkers that are possible predictors of postoperative stiffness. RESULTS: A total of 11 cases (3 male, 8 female) were identified and matched with 21 controls (6 male, 15 female) with no significant differences in age, sex, smoking history, or days from injury to surgery. Concentrations of the biomarker regulated upon activation, normal T-cell expressed and presumably secreted (RANTES) were significantly higher in patients requiring MUA/LOA versus controls (694.20 pg/mL [interquartile range, 214.75-3428.79] vs 113.04 pg/mL [interquartile range, 32.81-517.91], respectively; P = .034). On single-biomarker models, RANTES (odds ratio, 2.28; 95% CI, 1.29-5.37; P = .019) and basic fibroblast growth factor (bFGF) (odds ratio, 1.91; 95% CI, 1.07-3.99; P = .047) were associated with increased risk of postoperative stiffness requiring MUA/LOA after ACL reconstruction. Stepwise logistic regression identified 3 biomarkers that are possible predictors of postoperative stiffness, which were included in the final model: Interleukin 1 receptor antagonist (IL-1RA) (P = .198), bFGF (P = .157), and RANTES (P = .046). CONCLUSION: Higher concentrations of synovial fluid biomarkers bFGF and RANTES were associated with increased risk for stiffness requiring intervention after ACL reconstruction. Interleukin 6 (IL-6), vascular endothelial growth factor A (VEGF-A), tissue inhibitor of metalloproteinases 1 (TIMP-1), interleukin 1 receptor antagonist (IL-1RA), matrix metalloproteinase 3 (MMP-3), monocyte chemotactic protein 1 (MCP-1), and macrophage inflammatory protein 1B (MIP-1B) were not associated with the development of postoperative arthrofibrosis. FAU - Avila, Amanda AU - Avila A AD - NYU Langone Medical Center, Orthopaedic Surgery Department, Division of Sports Medicine, New York, New York, USA. FAU - Petrera, Massimo AU - Petrera M AD - NYU Langone Medical Center, Orthopaedic Surgery Department, Division of Sports Medicine, New York, New York, USA. FAU - Duenes, Matthew AU - Duenes M AD - NYU Langone Medical Center, Orthopaedic Surgery Department, Division of Sports Medicine, New York, New York, USA. FAU - Kingery, Matthew T AU - Kingery MT AD - NYU Langone Medical Center, Orthopaedic Surgery Department, Division of Sports Medicine, New York, New York, USA. FAU - Song, Melissa AU - Song M AD - NYU Langone Medical Center, Orthopaedic Surgery Department, Division of Sports Medicine, New York, New York, USA. FAU - Jazrawi, Laith M AU - Jazrawi LM AD - NYU Langone Medical Center, Orthopaedic Surgery Department, Division of Sports Medicine, New York, New York, USA. FAU - Strauss, Eric J AU - Strauss EJ AD - NYU Langone Medical Center, Orthopaedic Surgery Department, Division of Sports Medicine, New York, New York, USA. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221109 PL - United States TA - Am J Sports Med JT - The American journal of sports medicine JID - 7609541 RN - 0 (Vascular Endothelial Growth Factor A) RN - 0 (Interleukin 1 Receptor Antagonist Protein) RN - 0 (Receptors, Interleukin-1) SB - IM MH - Humans MH - Female MH - Male MH - *Vascular Endothelial Growth Factor A MH - Case-Control Studies MH - *Interleukin 1 Receptor Antagonist Protein MH - Retrospective Studies MH - Receptors, Interleukin-1 OTO - NOTNLM OT - anterior cruciate ligament OT - arthrofibrosis OT - biomarkers OT - stiffness OT - synovial fluid EDAT- 2022/11/10 06:00 MHDA- 2022/12/15 06:00 CRDT- 2022/11/09 06:22 PHST- 2022/11/10 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2022/11/09 06:22 [entrez] AID - 10.1177/03635465221131805 [doi] PST - ppublish SO - Am J Sports Med. 2022 Dec;50(14):3838-3843. doi: 10.1177/03635465221131805. Epub 2022 Nov 9.