Ulnar longitudinal deficiency: a rare case report and review

Abstract

<p class="abstract">Ulnar hemimelia is a rare postaxial partial or complete longitudinal deficiency of ulna. It has an estimated incidence of 1/100,000-150,000 live births, with a male to female ratio of 3:2. There is usually ulnar deviation of hand and shortening of forearm. Radial head subluxation and fixed flexion deformity of the hand may be associated with it. Complex carpal, metacarpal, and digital abnormalities including absence of triquetrum, capitate and three fingered hand (tridactyly) are additional findings commonly found in association. Here, we present a case of a 17-year-old female with left sided ulnar club hand due to isolated partial ulnar aplasia.</p>

Ulnar Longitudinal Deficiency: A Case Report

“…It is frequently associated with other musculoskeletal conditions such as proximal femoral focal deficiency, radial head subluxation, syndactyly, oligodactyly, or congenital scoliosis. Approximately 90% of patients with ULD have missing digits, 70% with thumb abnormalities, and 30% present with syndactyly [2,7,8]. Another clinical condition to consider when evaluating patients with hypoplastic upper limbs is thrombocytopenia absent radius (TAR) syndrome.…”

“…ULD is a part of congenital longitudinal deficiencies, a spectrum of abnormalities that affect the upper extremities, with radial longitudinal deficiency being more common than others. Radial longitudinal deficiency affects 1:30,000 live births, while ULD affects one to two in 100,000 children [1][2][3]. ULD is primarily found in males rather than females, with a male-to-female ratio of 3:2.…”

“…ULD is primarily found in males rather than females, with a male-to-female ratio of 3:2. Most presentations (70%) are right-sided and unilateral, with ulnar deviation of the hand and a shortened forearm [1][2][3][4].…”