• The American surgeon · Jan 1994

    The mangled lower extremity: can salvage be predicted?

    • G V Poole, S G Agnew, J A Griswold, and R S Rhodes.
    • Department of Surgery, University of Mississippi Medical Center, Jackson.
    • Am Surg. 1994 Jan 1; 60 (1): 50-5.

    AbstractThe ability to predict amputation following combined orthopedic, vascular and soft tissue trauma to an extremity could eliminate prolonged attempts at salvage of a doomed limb. We reviewed our experience with 48 mangled lower extremities in 46 patients. Twenty-one penetrating wounds and 25 blunt injuries occurred in 37 men and nine women ranging in age from 3 to 59 years. Severity of injuries to muscle, skin, and major nerves were strongly interrelated (r = 0.49 to 0.74, P < 0.001), but there were no correlations between injuries to these tissues and severity of bone injury (r < 0.19, P > 0.20). Twenty-four limbs were salvaged, and 24 were amputated. Increased severity of soft tissue injury was associated with a greater probability of limb loss (P < 0.001), but limb salvage or amputation could not be predicted accurately by any variable or group of variables such as age, mechanism of injury, Injury Severity Score, presence of shock, level of injury, venous injury or repair, sequence of repair (vascular vs skeletal), time of fasciotomy, arteriography, blood requirement, or duration of ischemia. Amputation was best predicted by severity of injury to the sciatic or tibial nerves (P < 0.001), and by failure of arterial repair (P < 0.01). Severe extremity injuries require a coordinated approach and decisions regarding amputation require careful judgement. These decisions cannot always be made at the time of presentation or during the initial operation. If after revascularization and skeletal stabilization the extremity is clearly nonviable or remains insensate, then delayed amputation can be performed under more controlled circumstances.

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