62 Original article Severity of ulnar deficiency and its relationship with lower extremity deficiencies Janet L. Walkera,b, Pooya Hosseinzadehc, Justin Lead, Hank Whitea, Sheila Belle and Scott A. Rileya,b To assess the characteristics of ulnar deficiency (UD) extremities. J Pediatr Orthop B 28:62–66 Copyright © 2018 and their relationship to lower extremity deficiencies, we Wolters Kluwer Health, Inc. All rights reserved. retrospectively classified 82 limbs with UD in 62 patients, Journal of Pediatric Orthopaedics B 2019, 28:62–66 55% of whom had femoral, fibular, or combined deficiencies. In general, UD severity classification at Keywords: embryology, fibular deficiency, fibular hemimelia, limb development, ulnar club hand, ulnar dysmelia, ulnar hemimelia one level (elbow, ulna, fingers, thumb/first web space) statistically correlated with similar severity at another. Ours aShriners Hospitals for Children, Lexington Medical Center, bDepartment of Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, cDepartment is the first study to show that presence of a lower limb of Orthopaedic Surgery, Washington University, St. Louis, Missouri, dDepartment of deficiency is associated with less severe UD on the basis Orthopaedic Surgery, Medical College of Ohio, Toledo and eDivision of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA of elbow, ulnar, and thumb/first web parameters. This is consistent with the embryological timing of proximal Correspondence to Janet L. Walker, MD, Shriners Hospitals for Children Medical Center, 110 Conn Terrace, Lexington, KY 40508, USA upper extremities developing before the lower Tel: + 1 859 266 2101; fax: + 1 859 268 5636; e-mail:
[email protected] Introduction classification.