Ganglion cysts are thin walled cavities contain a viscous, mucinous fluid, arising in proximity to joint capsules/tendon sheaths but do not communicate with the joint. Most common w/ repetitive strain or overuse, trauma, or inflam. arthritis. Steroid injx dont… https://t.co/nUlQvemYa5 https://t.co/gSNzBuPeW4