Outcomes of Complex Humeral Fractures Treated with Limb Reconstruction System External Fixator: A Case Series Review

Background: Humeral shaft fractures HSFs are common and can be particularly challenging to treat in complex cases. This study evaluates the union rate and functional outcomes of HSFs treated with a monorail unilateral limb reconstruction system (LRS). Methods: We retrospectively reviewed six patients with HSFs treated with LRS from November 2019 to March 2021. Indications included AO 12A, 12B, 12C fractures, open fractures, poor soft tissue conditions, and fracture - related infections. Functional outcomes were assessed using the DASH score, shoulder and elbow range of motion (ROM), and the ROWE score. Radiological union was evaluated using the modified Radiological Union Score for Tibia (mRUST). Results: This case series reviews the outcomes of six patients with HSFs treated using the Limb Reconstruction System LRS. The study retrospectively evaluates the union rate, functional recovery, and complications. A 100% union rate was achieved within a mean time of 4.5 months, with significant improvements in DASH scores from 69.9 preoperatively to 6.7 postoperatively (p < 0.00001). Conclusion: Monorail unilateral LRS demonstrated high union rates and significant functional improvement in treating humeral shaft fractures. The LRS proved effective in managing complex humeral fractures, combining conservative and surgical approaches without infection recurrence.