The Threat of Longitudinal Cracking after Distal Radius Fracture Treatment with Volar Locking Plate

The purpose of this study was to examine the occurrence rate of longitudinal cracks and associated characteristics following volar locking plate fixation of the distal radius. Using case records from Shizuoka Saiseikai General Hospital dated between March 2008 and March 2015, a total of 419 eligible adult patients were identified. Standard anteroposterior postoperative radiographs were evaluated to classify longitudinal crack occurrence. Documented variables were compared between patients with longitudinal cracking and those without. Univariate analyses were conducted among each plate group. There were 38 confirmed cases of cracking (Acu-Loc: n=25, Acu-Loc 2: n=11, VA-TCP: n=2). All cracks healed within 4 to 6 weeks after the operation. Plate type, along with patient age and sex were significantly associated with the occurrence of a longitudinal crack (p<0.05). Although no severe complications related to longitudinal cracking were observed, associated risks for specific patient groups should be considered.