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.