Take an omega-3 fatty acid supplement or eat more foods that contain omega-3 fatty acids such as salmon, sardines, walnuts and canola oil. Foods and supplements that contain omega-3 fatty acids support the regeneration of synovial fluid to better lubricate the hip joint.n the hip joint, pain may radiate through the hip and groin into the thigh. Joint pain may be worse in the morning and at the end of the day. A physician can diagnose the cause of hip pain and provide treatment options to reduce pain and lubricate joints.