Ball-and-socket joints are classified functionally as multiaxial joints because they can move bones along several axes. The muscles that surround the joints permit the humerus and femur to move away from the bodyâs midline (abduction), toward the bodyâs midline (adduction), forward (flexion), and backwards (extension).
Ulcer. A likely cause of stomach pain after eating is an ulcer. An ulcer is a deep, open sore in the stomach or intestines. The reason for stomach pain may be food or stomach acid that irritates the ulcer.
Stomach and back pain after eating could indicate acute pancreatitis, which is a serious condition. You would feel a pain in your upper abdomen and sometimes in your back that worsens after you eat. The pain may last for days, and you may have swelling in your abdomen, nausea, vomiting, a fever and a rapid pulse.