Osteoarthritis (OA) and Parkinson’s disease (PD) are on the rise and greatly impact the quality of individuals’ lives. Although accumulating evidence indicates a relationship between OA and PD, the particular interactions connecting the two diseases have not been thoroughly examined. Therefore, this study explored the association through genetic characterization and functional enrichment. Four datasets (GSE55235, GSE12021, GSE7621, and GSE42966) were chosen for assessment and validation from the Gene Expression Omnibus (GEO) database. Weighted Gene Co-Expression Network Analysis (WGCNA) was implemented to determine the most relevant genes for clinical features. Then, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were carried out to explore the biological processes of common genes, and to display the interrelationships between common genes, the STRING database and the application Molecular Complex Detection Algorithm (MCODE) of Cytoscape software were leveraged to get hub genes. By intersecting the common genes with the differentially expressed genes (DEGs) acquired from GSE12021 and GSE42966, the hub genes were identified. Finally, we validated the diagnostic efficacy of hub genes and explored their correlation with 22 immune infiltrating cells. As a consequence, we discovered 71 common genes, most of which were functionally enriched in antigen processing and presentation, mitochondrial translation, the mRNA surveillance pathway, and nucleocytoplasmic transport. Furthermore, WDR43 was found by intersecting eight hub genes with 28 DEGs from the two validation datasets. Receiver Operating Characteristic (ROC) implied the diagnostic role of WDR43 in OA and PD. Immune infiltration research revealed that T-cell regulatory (Tregs), monocytes, and mast cells resting were associated with the pathogenesis of OA and PD. WDR43 may provide key insights into the relationship between OA and PD.

Background: Rheumatoid arthritis (RA) is a chronic autoimmune disease. Pigmented villonodular synovitis (PVNS) is a tenosynovial giant cell tumor that can involve joints. The mechanisms of co-morbidity between the two diseases have not been thoroughly explored. Therefore, this study focused on investigating the functions, immunological differences, and potential therapeutic targets of common genes between RA and PVNS.Methods: Through the dataset GSE3698 obtained from the Gene Expression Omnibus (GEO) database, the differentially expressed genes (DEGs) were screened by R software, and weighted gene coexpression network analysis (WGCNA) was performed to discover the modules most relevant to the clinical features. The common genes between the two diseases were identified. The molecular functions and biological processes of the common genes were analyzed. The protein-protein interaction (PPI) network was constructed using the STRING database, and the results were visualized in Cytoscape software. Two machine learning algorithms, least absolute shrinkage and selection operator (LASSO) logistic regression and random forest (RF) were utilized to identify hub genes and predict the diagnostic efficiency of hub genes as well as the correlation between immune infiltrating cells.Results: We obtained a total of 107 DEGs, a module (containing 250 genes) with the highest correlation with clinical characteristics, and 36 common genes after taking the intersection. Moreover, using two machine learning algorithms, we identified three hub genes (PLIN, PPAP2A, and TYROBP) between RA and PVNS and demonstrated good diagnostic performance using ROC curve and nomogram plots. Single sample Gene Set Enrichment Analysis (ssGSEA) was used to analyze the biological functions in which three genes were mostly engaged. Finally, three hub genes showed a substantial association with 28 immune infiltrating cells.Conclusion: PLIN, PPAP2A, and TYROBP may influence RA and PVNS by modulating immunity and contribute to the diagnosis and therapy of the two diseases.

Objective: Building on prior device development and bench-based visual-field validation, this exploratory study evaluated the feasibility of an adjustable-angle arthroscope for ACL femoral tunnel creation in an ex vivo porcine knee model and descriptively compared femoral tunnel position measurements and procedural time with a conventional 30° arthroscope. Methods: Ten fresh porcine knee specimens were allocated to an adjustable-angle arthroscope group or a conventional 30° arthroscope group ( n = 5 each). The operational target point was defined as the intersection 5 mm from the inferior and posterior cartilage margins of the medial wall of the lateral femoral condyle; this standardized experimental target was not assumed to represent the native porcine or human ACL footprint center. All procedures were performed by one orthopaedic surgeon who was experienced in ACL reconstruction and was a member of the device-development team. CT-based three-dimensional reconstruction and gross anatomical measurement were used to determine distances A and B, and operative time and measurement reliability were recorded. Group-level outcomes were summarized descriptively. Results: On CT three-dimensional reconstruction, distances A and B were 4.93 ± 0.79 mm and 7.27 ± 0.85 mm, respectively, in the adjustable-angle group and 6.68 ± 1.15 mm and 8.98 ± 1.17 mm, respectively, in the 30° group. Gross anatomical measurements were 4.9 ± 0.7 mm and 7.1 ± 0.8 mm in the adjustable-angle group and 6.7 ± 1.2 mm and 9.0 ± 1.3 mm in the 30° group. Mean operative time was 14.23 ± 1.00 min and 14.46 ± 1.21 min, respectively. Interobserver ICCs were 0.91 and 0.90, and intraobserver ICCs were 0.97 and 0.97. Conclusion: This study successfully developed an adjustable-angle arthroscope based on a hinge-linkage mechanism and demonstrated, through quantitative testing, that it provided greater visual-field coverage than conventional 30° and 70° fixed-angle arthroscopes. By enabling dynamic multiangle visualization within a single arthroscopic system, this device may provide a more flexible visualization strategy for complex arthroscopic procedures and has potential clinical applicability.