The aim of this study was to retrospectively determine the risk factors for delayed union in 117 consecutive pediatric both-bone forearm fractures treated with internal fixation. Eight patients (7%, 8/117) had delayed unions, all were boys treated with intramedullary fixation for a fracture in the middle-third of the bone; and in seven patients, the ulna was the site of the delayed union. Older age, double-bone fixation, increased initial fracture displacement, and opening a closed ulna fracture were associated with longer time to union (P<0.05). Identification of risk factors will aid in the selection and duration of internal fixation and duration of immobilization.
aChildren’s Medical Center, Texas Scottish Rite Hospital for Children
bDepartment of Orthopaedics, University of Texas Southwestern Medical School, Dallas, Texas
cCV Starr Hand Surgery Center, New York, New York, USA
Correspondence to Christine A. Ho, MD, Children’s Medical Center, Texas Scottish Rite Hospital for Children, University of Texas Southwestern Medical School, 1935 Medical District Drive E2300, Dallas, TX 75235, USA Tel: +1 214 456 5614; fax: +1 214 456 5071; e-mail: firstname.lastname@example.org