Spring-assisted cranioplasty requires only two small incisions and is at least as effective as other techniques with respect to the cephalic index. Blood loss, operative time, and complication rate are reduced. The most important disadvantage is the need to remove the springs in a second intervention. A second drawback is that the expansion of the spring is not controllable after placement. This can be partially intercepted by adjusting the spring (or the craniotomy) to the patient's specific features.

Risk, III.