In the past two decades we have seen a surge forward in understanding the genetics and biochemistry underlying many pediatric orthopaedic disorders. A few projects have even progressed into the realm of clinical trials that are primarily aimed at controlling progressive disease. Meanwhile, genomic technology development has outpaced expectations and is enabling gene discovery for disorders that were previously intractable with traditional genetic methods. Included in this latter category are common disorders that display multigenic inheritance, sporadic disorders, and very rare conditions...