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    Ultrasonography or direct radiography? A comparison of two techniques to detect dorsal screw penetration after volar plate fixation
    (BioMed Central Ltd., 2018) Öç, Yunus; Kılınç, Bekir Eray; Gülcü, Anıl; Varol, Ali; Ertuğrul, Rodi; Kara, Adnan
    Background: Complications related to extensor tendons have begun to increase with the use of volar plates in the treatment of distal radius fractures. In this study, we aimed to compare four-plane radiography and ultrasonography in the evaluation of dorsal cortex screw penetration following volar plate fixation. Methods: We recruited 47 patients (33 males, 14 females, mean age 37.4 years; range 18-58 years). To evaluate dorsal screw penetration in all patients, we performed radiographs at 45° pronation, 45° supination and obtained dorsal tangential graphs at maximum palmar flexion, and a wrist lateral radiograph. Wrist ultrasonography was performed in all patients. Results: Dorsal screw penetration was detected in 12 of the 47 patients undergoing VLP application. While there was >2 mm screw penetration in seven patients, there was <2 mm screw penetration in five patients. On four-plane radiographs, screw penetration >2 mm was detected in seven patients and screw penetration <2 mm was detected in two patients. On four-plane radiography, dorsal screw penetration was not detected in three out of five patients, who were shown to have <2 mm screw penetration by ultrasonography. In addition to perioperative four-plane radiographs are also required to detect dorsal cortex penetration in patients undergoing VLP due to distal radius fracture. However, the detection of screw penetrations <2 mm is more likely with ultrasonography compared to four-plane radiography. Conclusion: We recommend that dorsal cortex screw penetration should be evaluated with perioperative ultrasonography. © 2018 The Author(s).