During the routine gross anatomy dissection of the posterior abdominal wall of a 61-year-old male cadaver, two unusual anatomic variations were observed in the branches of the abdominal aorta. In the first variation, the superior mesenteric artery originated from the right lateral side of the abdominal aorta and it was localized posterior to the left renal vein. Then, it gave its branches posterior to the inferior vena cava. The course and branching pattern of the rest of the vessel were normal anatomically. Secondly, right renal artery originated from the anterior surface of abdominal aorta, 1.5 cm inferior to the superior mesenteric artery. Then, it coursed anterior to the inferior vena cava, posterior to the right testicular vein, and reached to the right kidney. In our case, the diameters of the superior mesenteric artery and renal artery were 0.5 and 0.6 cm, respectively. In this cadaver, the right testicular vein crossed the right renal artery anteriorly and after a course of 0.2 cm it drained into the inferior vena cava (Fig.
When applying the modified tension band wiring technique to prevent articular penetration, K-wires should be inserted in the first 5 mm from dorsal cortex of the olecranon process at a maximum angle of 20°. Moreover, if the wires are required to be inserted more anteriorly because of the anatomical configuration of the fracture, they should be inserted at a shallow angle in the sagittal plane in relation to the proximal cortex of the ulna.
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