Abnormal dryness within a joint, causing stiffness and reduced movement.
From Greek 'arthron' (joint) + 'xeros' (dry) + '-osis' (condition). A medical term describing the loss of synovial fluid or moisture in joints.
Joints need lubrication like door hinges do—this term describes what happens when that 'oil' dries up, which is why doctors now recommend staying hydrated and moving regularly to keep joints properly 'oiled.'
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