Definition: Anastomosis is a medical term referring to a surgical procedure where one joint, typically the hip or shoulder, closes around an artery, vein, nerve root, etc., to provide a direct path for blood flow. It's crucial in treating conditions like arthritis and can help manage symptoms. For instance, if the knee joint is anastomosed with another joint (like the spine), it allows for more fluid to move freely between the two bones. This helps reduce swelling, pain, and improve mobility.