I have one year old boy and over last month or so I have noticed cracking in his joints, mostly hips and shoulders. Its not all the time., only sudde?

Mgt. Has there been any injury? swelling, pain or fever? I would advise a diet with good sources of VItamin D and Calcium. If he is otherwise well without any other symptoms, it is likely from the normal growth of tendons and joints as he grows. If there are associated findings, I would suggest a referral to a rheumatologist.