1 Two-part, three-part and four-part fractures can occur. 2  The fractures are then classified by their degree of displacement and angulation. 3  Surgical neck fractures are the most common type of proximal humeral fracture.
About 1.8 million people in the United States experience allergies to tree nuts, the Food Allergy and Anaphylaxis Network reports. Like other tree nuts, walnuts can cause a range of unpleasant reactions.
In these patients walnut allergy is the consequence of cross-reactivity between pollen allergens and similar proteins in vegetable foods. This kind of food allergy is generally mild: in most cases oral allergy syndrome (OAS) is the only consequence of the ingestion of offending food.