Traumatic Fracture · Caused by trauma · Excessive force · Most common · Eg. Fall, RTA. Pathological Fracture · Fracture of weak bone due to underlying disease. · Excessive force not needed. · Risk of non-union · Eg: Metastasized bone Stress Fracture · Break in bony trabeculae due to chronic repetitive injury. · May not be visible in X-rays. · Present only as pain.