Review of the radiology in randomised controlled trials in open reduction and internal fixation (ORIF) of displaced intraarticular calcaneal fractures
摘要
The aim of this study was to assess the radiological evaluation of all prospective, randomised, controlled trails of displaced intraarticular calcaneal fractures. A systematic review of the literature, of which only three of 296 references were randomised and controlled, were examined in a blinded fashion. All had preoperative coronal CT for Sander's classification and used a lateral surgical approach or conservative treatment. Thordason (15 patients/11 controls) used interoperative lateral and axial X-rays. Bohler's angle increased on average from 11 to 26° (P<0.001) postoperatively, but decreased (9–8°) in the conservative group. The posterior facet residual displacement was 1.1 and 4.7 mm, respectively. O'Farrell (12 patients/12 controls) showed 8 out of 12 had Bohler's and Gissane's angle partially or fully restored postoperatively, and not conservatively. Parmar (25 patients/31 controls) used preoperative lateral radiographs, but failed with CT to grade the postoperative reduction, whilst the conservative group was unaltered. There was no systematic, blinded assessment of the change in radiology by the operative intervention. Overall there was weak evidence to support ORIF.