RA	Rheumatoid Arthritis
MTX	Methotrexate
HSA	Human Serum Albumin
RBCM	Red Blood Cell Membrane
CIA	Collagen-Induced Arthritis
FLS	Fibroblast-Like Synoviocytes
LPS	Lipopolysaccharide
TNF-α	Tumor Necrosis Factor-alpha
IL-1β	Interleukin-1beta
IL-6	Interleukin-6
CCK-8	Cell Counting Kit-8
DLS	Dynamic Light Scattering
NTA	Nanoparticle Tracking Analysis
TEM	Transmission Electron Microscopy
FT-IR	Fourier Transform Infrared Spectroscopy
PDI	Polydispersity Index
EDC	1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide
NHS	N-Hydroxysuccinimide
DMSO	Dimethyl Sulfoxide
PBS	Phosphate-Buffered Saline
FBS	Fetal Bovine Serum
DMEM	Dulbecco’s Modified Eagle Medium
FITC	Fluorescein Isothiocyanate
DAPI	4′,6-Diamidino-2-Phenylindole
MFI	Mean Fluorescence Intensity
Micro-CT	Micro-Computed Tomography
BMD	Bone Mineral Density
BV/TV	Bone Volume/Total Volume
BS/BV	Bone Surface/Bone Volume
Tb.Sp	Trabecular Separation
Tb.Th	Trabecular Thickness
Tb.N	Trabecular Number
NSAIDs	Non-Steroidal Anti-Inflammatory Drugs
GCs	Glucocorticoids
DMARDs	Disease-Modifying Antirheumatic Drugs