As it turns out, the clavicle, also known as the collar bone, located between your shoulder and the front of the neck, is the bone which is most likely to get broken in the human body. The clavicles can be easily fractured by impacts to the shoulder, from the force of falling on outstretched arms, and by a direct hit.

The femur is the strongest bone in the human body. It extends from the hip to the knee. It can resist a force of up to 1,800 to 2,500 pounds. Only events of a large amount of force can cause it to break, such as by a car accident or a fall from an extreme height, taking months to heal.

Bone Cancer. Osteosarcoma and Ewing's sarcoma are the most common malignancies of bone tissues in children. Osteosarcoma, the more common of the two types, usually presents in bones around the knee. Ewing's sarcoma may affect bones of the pelvis, thigh, upper arm, or ribs.

Hematogenous osteomyelitis. In adults, the vertebrae are the most common site of hematogenous osteomyelitis, but infection may also occur in the long bones, pelvis, and clavicle. Primary hematogenous osteomyelitis is more common in infants and children, usually occurring in the long bone metaphysis.

Some people say jaw, pelvis, and skull. But its the femur. The femur is the longest and strongest bone in the body. It is located in your thigh.

Speaking of clavicle and to answer your question. Clavicle or the collar bone is the most commonest bone to fracture. Its very obvious and subcutaneous. It is formed intramembranously like skull bones ,facial bones,scapula contrary to other strong bones in the body which are formed by enchondral formation.