Radius crossover sign: an indication of malreduced radius shaft greenstick fractures.

BACKGROUND: Radius shaft greenstick fractures in children can be a challenging injury to treat because angulation and rotational alignment are difficult to assess. METHODS: In this report, we describe a simple method for analyzing the deformity and identifying rotational and angular malalignment. This technique involves analyzing the forearm radiographs as 2 segments, proximal and distal, and assuring that the rotational position of each matches the other. RESULTS: We present 3 cases of proximal radius greenstick fractures in malalignment to demonstrate the radius crossover sign. CONCLUSIONS: Identifying the radius crossover sign, and proceeding with further closed reduction may prevent deformity that could otherwise result in a significant loss of forearm motion. LEVEL OF EVIDENCE: Level V.