Olecranon fractures [4] Distal humerus fractures[4] Medial epicondylar fractures [4] Valgus stress[4] Childhood supracondylar fracture[4] Transient occlusion brachial artery (surgery)[3] Subdermal contraceptive (implant)[3] Hemophilia [3] Tumor[3] Blunt injuries [3]