Think Beyond the Extremities – Complications in Skeletal Dysplasia October 18, 2019 · Achondroplasia · 0 Watch the LLRS 2019 Presidential Guest Lecture: Think Beyond the Extremities – Complications in Skeletal Dysplasia by William G. Mackenzie, MD, FRCSC, FACS. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)