Ganglions are small sacs (cysts) filled with clear, jelly-like fluid. They often appear as bumps on the hands and wrists, but they can also develop on the feet, ankles, knees, or shoulders. A ganglion can grow out of a joint capsule, which surrounds and protects the joint, or out of a tendon sheath, which covers the tendon (the ropey fibres connecting muscle to bone). Most people with ganglions notice that the bumps appear suddenly.
Current as ofSeptember 20, 2018
Author: Healthwise Staff William H. Blahd, Jr., MD, FACEP - Emergency Medicine Anne C. Poinier, MD - Internal Medicine Adam Husney, MD - Family Medicine Kathleen Romito, MD - Family Medicine Herbert von Schroeder, MD, MSc, FRCS(C) - Orthopedics, Hand and Microvascular Surgery
Medical Review:William H. Blahd, Jr., MD, FACEP - Emergency Medicine & Anne C. Poinier, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Kathleen Romito, MD - Family Medicine & Herbert von Schroeder, MD, MSc, FRCS(C) - Orthopedics, Hand and Microvascular Surgery