Abstract
To explore outcomes after tibial rigid intramedullary nailing (RIMN) in skeletally immature patients, with a focus on post-operative complications and iatrogenic changes in tibial slope due to anterior physeal arrest. Design: Retrospective case series. A large, tertiary care health system in the rural Mid-Atlantic United States, including two Level 1 trauma centers and one Level 2 trauma center. Included were skeletally immature patients within 2 years of skeletal maturity undergoing tibial RIMN for OTA/AO 42 A to C fractures between March 2009 and January 2024 with post-operative follow-up more than 1-year. The primary outcome was change in tibial slope after RIMN. Secondary outcomes included post-operative weight-bearing status and complications. Thirty-seven skeletally immature patients were included (mean age 15.2 ± 1.3 years, 76% male). For 22 patients with minimum 6-month post-operative radiographs (mean 18.4 ± 12.7 months), there was no significant change from pre- to post-operative tibial slope (80.0 ± 1.9° vs 80.1 ± 1.6°, p=0.86). Time to achievement of full weightbearing across the series averaged 45.4 ± 35.6 days. Five (14%) of patients necessitated hardware removal, and 89% of patients reported they had returned to "normal" activity at latest follow-up (mean 56.2 ± 42.5 months). This study demonstrated that RIMN for tibial shaft fractures in skeletally immature pediatric patients within 2 years of maturity was not associated with iatrogenic physeal injury and resultant changes in tibial slope. Additional favorable clinical outcomes, the potential for early weight-bearing, and few associated post-operative complications, indicate that RIMN is a safe option for skeletally immature patients with tibial shaft fractures. Caution should be exercised when extrapolating these results to younger pediatric patients with >2 years of skeletal growth remaining. IV.
Published Version
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