An ultrasound technique will be used to record the acoustic response of the fractured bone at each clinical visit until the fracture is healed. The ultrasound probe and a small hydrophone are placed on the exposed portion of the forearm on either sides of the fracture. The ultrasound intensity will be at the safe level according to the FDA regulation. Investigators will conduct the tests on the fracture and on the unaffected (contralateral) bone as the control. Typically this is at 1-, 2-, 4-, and 6- weeks following the fracture.

An ultrasound technique will be used to record the acoustic response of the intact bone as control at each clinical visit. The ultrasound probe and a small hydrophone are placed on the exposed portion of the forearm or clavicle. The ultrasound intensity will be at the safe level according to the FDA regulation. Investigators will conduct the tests on the fractured forearm/clavicle and on the unaffected (contralateral) forearm/clavicle as the control. Typically this is at 1-, 2-, 4-, and 6- weeks following the fracture.

A new ultrasound technique for children and adults who have sustained forearm or clavicle fractures

Ultrasound results will be compared between the fractured and unaffected extremity. This comparison allows investigators to compensate for variations in bone size, geometry, and surrounding muscles, thus calibrating the measurements to individual patient. The hypothesis is that the acoustic response of the fractured bone approaches to that of the unaffected bone as the fracture heals. Therefore, by comparing the test results obtained from the fractured and unaffected bone it is possible to evaluate the status of bone fracture and its healing level. In this process, investigators will correlate the results of ultrasound tests to clinical findings (e.g., radiographs) to validate the results from the ultrasound tests.