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103. PROGNOSTIC BASELINE FACTORS FOR PREDICTING RE-OPERATIONS IN PATIENTS WITH TIBIAL SHAFT FRACTURES



Abstract

Purpose: Accurate prediction of re-operation following tibial nailing may facilitate optimal patient care. We recently completed the SPRINT trial, a large, multi-centre trial of reamed versus non-reamed intramedullary nails in 1226 patients with tibial shaft fractures. Using the SPRINT data, we conducted an investigation of baseline and surgical patient characteristics to determine if they are associated with increased risk of re-operation within one year.

Method: Using multivariable logistic regression analysis, we investigated 15 characteristics for association with increased risk of re-operations. Because the primary SPRINT analysis found that reamed nailing reduced events in patients with closed but not open fractures, we considered both open and closed as well as treatment status in our model.

Results: We found an increased risk of re-operation in patients with a high energy mechanism of injury (odds ratio, OR=1.57, 95% CI 1.05 to 2.35), stainless steel versus titanium nail (OR=1.52, 95% CI 1.10 to 2.13), fracture gap (OR=2.40, 95% CI 1.47 to 3.94) and post-operative weightbearing (OR=1.63, 95% 1.003 to 2.64). Open fractures increased the risk of re-operation in patients who received a reamed nail (OR=3.26, 95% CI 2.01 to 5.28) but not in patients who received a non-reamed nail (OR=1.50, 95% CI 0.92 to 2.47). Patients with open fractures who had either wound management without any additional procedures, or delayed primary closure, had a decreased risk of re-operation when compared to patients who required subsequent reconstruction (respectively, OR=0.18, 95% CI 0.09 to 0.35; OR=0.29 95% CI 0.14 to 0.62).

Conclusion: To ensure optimal patient care surgeons should consider the characteristics identified in our analysis to reduce risk of re-operation.

Correspondence should be addressed to CEO Doug C. Thomson. Email: doug@canorth.org