Abstract: The orthopedic arm sling is a sling designed to stabilize the shoulder and arm of an infant, toddler and child. The orthopedic arm sling includes a sling trough and a plurality of neck straps that allow the arm of the user to be supported within the trough and suspended from the user's neck. A pair of torso straps secures the trough about the user's torso, limiting abduction of the extremity. A mesh panel is integrally connected to the sling trough to provide for increased ventilation to the user's forearm and hand. A pair of L-shaped and edge strips of hook and loop fastening material are affixed to a first and second side of the sling trough. When the sling is worn, L-shaped and edge strips of hook and loop fastening material are joined together, uniting the first and second sides of the sling trough to further stabilize the extremity.