👉 Arthrolithiasis is a medical condition that refers to an abnormal growth of soft, fluid-filled structures in the joints. These structures are called "arthrodeses" or "arthrodial masses." They can occur in any joint, but they most commonly involve the knee and ankle bones. Arthrodeses may be benign (normal) or malignant (cancerous). The disease is often caused by an inflammatory process that causes the soft tissues to swell and become inflamed.
