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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXIII | Pages 193 - 193
1 May 2012
Sciadini M
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Algorithms for the treatment of multiply-injured patients with concomitant orthopaedic injuries have continued to evolve over the past several decades. Advances in surgical techniques and implants have revolutionised the treatment of specific musculoskeletal injuries. Improved understanding of the implications of applying these techniques to patients with compromised physiology has led to critical reevaluation of the issues surrounding definitive orthopaedic care. A discussion of these issues as they apply to the multiply-injured patient with associated femoral shaft fracture provides insight into how Damage Control Orthopaedics has evolved. As well as what questions remain unanswered in our ongoing efforts to decrease mortality and improve long-term functional recovery in this difficult and challenging patient population. While femur fracture patients in the 1950s and 1960s were often deemed ‘too sick’ for surgical treatment, the high morbidity and mortality associated with long-term traction as a primary treatment modality led to recognition of the benefits of early fracture care in the 1980s. Multiple studies demonstrating the benefit of early fixation of femur fractures in multiply-injured patients led to a dramatic shift in treatment protocols towards urgent, if not emergent, definitive stabilisation of the femur. However, weaknesses of these early studies exist and their results were often over-interpreted. In the late 1980s and early 1990s, evidence began to accumulate that early definitive treatment consisting of reamed intramedullary nailing of the femur might actually be detrimental in an at risk subgroup of patients. Early interpretation of these results led to a move toward ‘unreamed’ nails in multiply-injured patients in an effort to minimise the pulmonary impact of reaming. Our current level of understanding appears to indicate that there exists a much more complex interaction between multiple factors including patient characteristics, associated injuries, timing and mode of orthopaedic stabilisation employed. As the relative importance and influence of these multiple factors becomes clearer, our ability to appropriately select patients for early total care versus damage control orthopaedics should improve the potential for damaging physiological effects of treatment. In the meantime, application of the principles of damage control to those patients for whom it is clearly indicated, as well as to those for whom it may not be clear cut, appears to have minimal, if any, deleterious effect


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVIII | Pages 137 - 137
1 Sep 2012
Duffy PJ Gray A Powell J Mitchell J Tyberg J
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Purpose. There are concerns with regard to the physiological effects of reamed intramedullary femoral fracture stabilisation in patients who have received a pulmonary injury. This large animal study used invasive monitoring techniques to obtain sensitive cardiopulmonary measurements and compared the responses to Early Total Care (reamed intramedullary femoral fracture fixation) to Damage Control Orthopaedics (external fixation), after the induction of acute lung injury. We hypothesised a greater cardiopulmonary response to intramedullary fracture fixation. Method. Acute lung injury (PaO2/FiO2 < 200 mmHg) was induced in 12 invasively monitored and terminally anaesthetised male sheep via the infusion of oleic acid into the right atrium. Each animal underwent surgical femoral osteotomy and fixation with either reamed intramedullary (n=6) or external fixation (n=6). Simultaneous haemodynamic and arterial blood-gas measurements were recorded at baseline and at 5, 30 and 60 minutes after fracture stabilisation. Results. The mean (S.E.) PaO2/FiO2 fell significantly (p<0.05) from 359(37) to 107 (23) and 382 (33) to 128 (18) in the externally fixated and intramedullary nailed groups respectively as a result of the acute lung injury. The further combined effect of surgical osteotomy and subsequent fracture fixation produced a mean (+/− S.E.) PaO2/FiO2 of 114 (21) and 113 (12), in the externally fixated and intramedullary nailed groups respectively, immediately after surgery. This was not significantly different either within or between groups. Similarly the pulmonary vascular resistance (PVR) measured at 4.7 (0.9) and 4.2 (0.5) in the externally fixated and intramedullary nailed groups respectively after lung injury changed to 4.9 (0.7) and 4.3 (0.6) after surgical osteotomy and subsequent fracture fixation which, again was not significantly different either within or between groups. No significant difference in either PaO2/FiO2 or PVR was detected at the monitored 5, 30 and 60 minute intervals that followed fracture stabilisation. Conclusion. Against a background of standardised acute lung injury, there appeared to be no further deterioration produced by the method of isolated femoral fracture fixation in two sensitive physiological parameters commonly used by intensive care physicians