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Most frequently humeral shaft fractures occur as a result of a direct blow to the upper arm (transverse fractures). Indirect trauma from a fall or a twisting action (e.g. arm wrestling) are also encountered and usually result in spiral or oblique fractures 1,3.
Type II Fractures. These fractures break through part of the bone at the growth plate and crack through the bone shaft, as well. This is the most common type of growth plate fracture.