THE ROLE OF EMBOLIZATION IN ORTHOPEDIC SURGERY

Abstract

Introduction: Arterial bleeding following pelvic fractures is widely recognized as an indication for angiography and embolization although controversy persists as to the timing of this procedure in the treatment algorithm. Less well appreciated is its application in similar circumstances following blunt injury to the pelvic arteries and limb injuries. We describe our experience in a variety of haemorrhagic orthopaedic pathologies.

Patients and Methods: Angiography was performed in 29 patients- 16 with pelvic fractures, 9 with extremity injuries, and 4 with tumors. Seldinger technique was used for angiographic access, usually from the groin although on occasion extensive local injury required use of the brachial approach. Following the initial diagnostic study the a selective catheter was placed at the target, appropriate embolic material was selected and the source of haemorrhage was closed off.

Results: In our experience of pelvic traumatic bleeding (14 associated with fracture, 2 without) embolization was successful in promptly arresting hemorrhage in all but one case of advanced DIC. Mortality was confined to this last case and two others, all of whom were referred for embolization following prolonged hypotension and commenced angiographic intervention with blood pressure unmeasureable or of the order of 30mm systolic. With 9 cases of extremity injury, 1 iatrogenic, 5 penetrating, 2 blunt and one following fracture of the femur, embolization successfully treated the hemorrhage. Finally we present our experience in preventing hemorrhage in 4 cases, 3 of which were vertebral body tumours and 1 pathological fracture of the humerus due to RCC. At surgery following embolization none bled significantly.

Conclusions: The present study describes our experience in various orthopedic conditions. Less well recognized is its role in preventing hemorrhage; as a prelude to bloody operations on vertebral body metastases, aneurysmal bone cysts and hemangiomata as well as open reduction and internal fixation of pathological extremity fractures. We conclude that this technique is a valuable addition to the tools available to the orthopedic surgeon and whose application is not necessarily limited to the examples quoted, but should be applied in any case where the direct surgical approach is considered hazardous or ineffective.