How long does it take to recover from a collarbone fracture?
Clavicle fractures should heal completely within 12 weeks, but the pain usually subsides within a few weeks. Often patients are back to full activities before 12 weeks has passed, especially with younger patients.
As a general guide to return to activities, nothing should cause worsening pain. If not wearing a sling causes pain, wear a sling. If driving hurts the fracture site, don't drive. If throwing a ball hurts, don't throw. Once an activity doesn't cause significant pain, a gradual return can be attempted.
Recovery is usually complete, with a full return expected. Patients may notice a persistent bump where the fracture was (often for months or longer), but this should not be bothersome.
http://orthopedics.about.com/cs/brokenbones/a/collarbone.htm