Â­. Â­Dry ice is frozen carbon dioxide. A block of dry ice has a surface temperature of -109.3 degrees Fahrenheit (-78.5 degrees C). Dry ice also has the very nice feature of sublimation -- as it breaks down, it turns directly into carbon dioxide gas rather than a liquid.
The time for a broken collarbone to fully heal depends on the severity of the injury. In children, complete healing may take as little as three to six weeks. In adults, six to 16 weeks or more are often necessary for a collarbone to heal solidly.
The last phase involves upper-body exercises beginning below shoulder level and using tubing or bands. After three to six weeks of healing, you can add range weights and increase the load. Collarbone Recovery Treatment. 1. PRP. Athletes who have undergone surgery sometimes try injections of Platelet-Rich Plasma to hasten recovery.