"Navigating the tides of recovery": early vs. delayed osteosynthesis for closed tibia fractures complicated by acute compartment syndrome - an analysis of one hundred and three cases.

Purpose: In cases of closed tibia fractures with acute compartment syndrome (ACS), there is no established agreement on whether performing internal fixation at the time of closure or after healing of the fasciotomy wounds would affect the likelihood of non-union or infection risk. The study aims to compare fracture union rates, incidence of infection, and overall outcomes between early and delayed definitive fixation.

Methods: Retrospective analysis of closed tibia fractures (AO/OTA 41, 42) with ACS between 2010 and 2019 with a minimum two years follow-up. The patients were grouped into group-1 (early-definitive fixation group) and group-2 (delayed-definitive fixation group). The patients were further subdivided into - 1 A(early-plate osteosynthesis), 1B(early-intramedullary nail fixation), 2 A(delayed-plate osteosynthesis), and 2B(delayed-intramedullary nail fixation).

Results: Incidence of ACS in closed tibia fractures was 3.85%. Of the 103 patients included, the patients with plate fixation had a significantly higher union rate in the delayed group (100% vs. 91.66%; P = 0.0001). Similarly, among patients with nail fixation, a significantly higher union rate was seen in the delayed group (96.30% vs. 85.19%; P = 0.0016). The overall incidence of infection was 22.3% (23/103). Moreover, infection was higher in the early definitive fixation group (30.16% vs. 10%; P = 0.016).

Conclusion: With a lower incidence of infection and higher union rate among the delayed definitive fixation group, we propose to postpone the definitive fixation of closed tibia fractures complicated by ACS till the complete healing of fasciotomy wounds. This allows for adequate soft tissue healing and improvement in the biological environment of fracture, which boosts the chances of successful union and reduces infection risks.