The difference between synovial bursal hernia and synovial cyst is mainly due to different causes and different symptoms. 1. Different causes: synovial bursa hernia is the synovial layer of the synovial bursa is subjected to pressure from the joint cavity, from the joint bursa fibrous layer of the weak parts of the formation of the disease, mostly due to congenital developmental insufficiency. Synovial cyst is a cystic mass formed when the bursa of the neighboring joint expands due to filling with fluid, mostly caused by chronic injuries, such as long-term use of the joints, so that the joints of long-term weight-bearing or overwork, which leads to synovial inflammation, resulting in endocrine disorders and the formation of lumps. 2. Symptoms are different: synovial sac hernia is generally asymptomatic, some patients may have localized pain and a feeling of suffocation, which usually requires complete removal of the hernia sac through surgery and repair treatment of the base of the hernia sac. Typical symptoms of synovial cysts are the development of localized lumps in the joints, which are usually colorless, clear or slightly reddened, and soft to the touch. Pain may also develop around the joint where the mass is present, affecting joint movement and manifesting as limited mobility, which is usually treated by removal of the cyst by cystectomy. If there are localized pain and swelling and other uncomfortable symptoms, you should seek medical treatment in time to avoid delaying the condition.