How is a mucous cyst and Osteoarthritis of the distal interphalangeal joints managed?
Mucous cysts are commonly associated with OA of the DIP joints of the fingers. They present as a clear mucin-filled cystic mass, usually between the DIP joint and the proximal aspect of the nail. Pathophysiologically, the mucous cyst results from chronic inflammation secondary to a dorsal osteophyte of the DIP joint. Therefore, appropriate evaluation includes an x-ray, and definitive management must be directed at removal of the osteophyte. If the DIP joint is significantly painful or unstable, fusion of the DIP joint in mild flexion becomes the treatment of choice.
