Can a ganglion cyst be formed from repeated sprains?

No, ganglion cysts are not caused by repeated sprains. Ganglion cysts are fluid-filled sacs that develop along the tendons or joints, most commonly on the wrist or hand. They are caused by a weakness or defect in the joint capsule or tendon sheath, allowing synovial fluid to leak out and form a cyst. Sprains, which are injuries to ligaments, do not cause ganglion cysts.