The Fractured Collarbone
More than eighty-five percent of clavicle fractures occur in the middle of the bone. This type of fracture rarely ever needs surgery, except in special circumstances. Instead, the bone is allowed to heal on its own, and your doctor will be able to suggest ways in which you can ease the pain and discomfort. This will usually include wearing a sling or a "figure of eight" bandage for one to two weeks, applying ice packs to the area of the break, and taking mild pain pills. Most people find that a sling is more comfortable than a "figure of eight" splint, so doctors recommend this type of bandage more often.
For more detailed info on this injury this was taken from the AAOS Website:
The collarbone is considered part of the shoulder and helps connect the arm to the body. It lies above several important nerves and blood vessels. However, these vital structures are rarely injured when the collarbone breaks. The collarbone is a long bone, and most breaks occur in the middle section.
Signs of a break
* Sagging shoulder (down and forward).
* Inability to lift the arm because of pain.
* A grinding sensation if an attempt is made to raise the arm.
* A deformity or "bump" over the fracture site.
* Although a fragment of bone rarely breaks through the skin, it may push the skin into a "tent" formation.
Diagnosis
Although a broken collarbone is usually obvious, your orthopaedist will do a careful examination to make sure that no nerves or blood vessels were damaged. An X-ray is often recommended to pinpoint the location and severity of the break.
Treatment
Most broken collarbones heal well with conservative treatment and surgery is rarely necessary.
Surgery Indications: (from ShoulderSolutions.com)
Fractures that occur very near the A/C joint are also a special type of a break. Sometimes these fractures heal so slowly that surgery is often preferred. Surgery is an option for some of these fractures, and your doctor will discuss whether or not you have this type of fracture and may need surgery. Fortunately, this type of a broken clavicle is very rare, occurring less than 10% of the time.
If the fracture does not heal by itself, doctors describe the situation as a "non-union," which means that the bones have not grown back together. When this happens after a clavicle fracture, the patient may experience long lasting pain and discomfort. In this situation, surgery may be offered as a way to realign the ends of the bone and encourage them to heal by holding them there with a plate and screws. Your doctor will be able to discuss the advantages and disadvantages of this type of surgery with you.

You can also use a special pin for intramedulary fixation. From Wheeless' Textbook of Orthopaedics










