Humeral lengthening in patients with achondroplasia and in patients with post-septic shortening: comparison of procedure efficiency and safety.

Humeral lengthening with use of monolateral fixators in patients with achondroplasia is an efficient method. Although the segment lengthening percentage is significantly greater in patients with achondroplasia than in patients with post-septic shortening of the humerus, the safety of this procedure is comparable.