Do I Need To Seek An Attorney If So What Kind?

13 yr old son was arrest by a cop, my son was not a threat to the officer, cop put him in handcuffs, son stated that he told the officer that his cuffs was to tight and his hand was feeling numb, cop did not respond. He went to juvenile and complained about his wrist. My son was bleeding from the hand cuff being too tight on his wrist. Family knew nothing about this, my son was released 10 days later. Next day at home he came to me complained about his wrist tingling and that when I noticed a horrible scar on his wrist. I took him to the ER. He has. Broken wrist, he was referred to an orthopedic. I want to get legal advice or seek an attorney to hiring about and officer using excessive force, neglection or misconduct to a minor that was never a threat. Can I do that? (N GA)