Retrohepatic inferior vena cava injuries: surgical anatomy and operative maneuvers the trauma surgeon needs to know

Injuries of the retrohepatic inferior vena cava are among the most lethal encountered in abdominal trauma. They are anatomically unforgiving: the retrohepatic cava is a short venous segment embedded within the liver, tethered by numerous fragile tributaries that drain downstream of the portal triad, offering almost no vessel for proximal control and bleeding at a rate that allows the surgeon few minutes of deliberation. This review examines the surgical anatomy of the segment as it bears on injury and repair, describes the operative maneuvers available for exposure and vascular control, and proposes a physiology-anchored framework to guide the surgeon confronting this injury. The segment is embedded in, or completely encircled by, parenchyma in a substantial minority of individuals, and receives multiple direct venous ostia whose number, caliber and position vary widely between patients. Because all of this drainage lies beyond the portal triad, failure of the Pringle maneuver to arrest hemorrhage is the hallmark of a juxtahepatic injury. A reproducible, relatively avascular corridor on the right anterior caval wall underlies the parenchyma-sparing approaches. Imaging is unreliable and the diagnosis is usually made at laparotomy. The available maneuvers run from perihepatic packing and inflow occlusion through right liver mobilization, finger-fracture hepatotomy, total vascular isolation preceded by aortic occlusion, veno-venous bypass and hybrid endovascular control, with the atriocaval shunt now historical and hepatectomy-derived techniques such as the hanging maneuver reserved for experienced hands; each carries a distinct profile of exposure gained against tamponade lost. Pooled data show no significant mortality difference among the principal strategies, but the comparison rests on case series and case reports alone and is underpowered. No single technique has proved superior, and several remain beyond the routine experience of most trauma surgeons, for whom early involvement of an experienced hepatobiliary surgeon should be standard. Survival depends on the right technique, applied by the right team at the right time, guided by preserving the perihepatic tamponade and sequencing vascular control, aortic before caval, before exposure; the choice of maneuver should follow the patient’s physiology, the anatomy encountered, and the surgeon’s own command of the techniques involved.