One of the causes of abdominal pain that can run into the upper thigh is iliopsoas bursitis, the inflammation of the iliopsoas bursa, according to Northridge Pain Management Specialists. This is the largest bursa in the body, which lies between the front of the hip joint and the iliopsoas muscle. There are multiple causes for iliopsoas bursitis, which include arthritis, recreational injuries and infection of the bursa.
The purpose of the iliopsoas bursa is to lubricate movement of the tendon over the bone, explains Sports Injury Clinic. When this bursa becomes inflamed, it can cause pain deep within the groin or hip area, which can run down the front of the leg up to the knee. It may also cause stiffness in the hip and groin, as a result of the iliopsoas muscle tightening.
There are a few different ways that the bursa can become inflamed, causing iliopsoas bursitis. Rheumatoid arthritis and osteoarthritis can cause the condition, as can recreational activities such as soccer, ballet or martial arts, explains Northridge Pain Management Specialists. A rare but possible cause of iliopsoas bursitis is infection of the bursa. If this is the case, fluid may be removed from the bursa for testing purposes.
In order to treat this condition, doctors recommend several measures, including applying ice to the painful regions and getting plenty of rest, states Northridge Pain Management Specialists. It is best to avoid the activities that worsen the condition, including any that involve hip-flexing movements. Non-steroidal anti-inflammatory drugs can help control pain, but must be used cautiously and for limited periods. Physical therapy and corticosteroid injections are also options.