Calc phos was the remedy I thought of initially, too--it has the pains in joints and bones and is often thought of as a remedy for use in children who experience these kinds of bone pains--often just casually described as "growing" pains. Legg Perth disease is one pathology which should be considered when children complain of these pains. Thanks, Rachelle, for bringing such an ailment to light--in future I'll know to have it ruled out when a parent brings a child in with these symptoms.
In this case, choosing a good remedy should not be the big priority in treatment--the priority should be case management...and as Dr. Pannakal suggests, having the homeopath available to continually oversee case is REALLY necessary. There are some good referral sites you may find useful to help you locate a competent, qualified practitioner near you.
One of them:
www.homeopathy-cures.com
The ones listed in bold are the most highly recommended practitioners.
Divina