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The effects of the Frag-Loc(A (R)) compression screw on distal radius fracture with a displaced dorsoulnar fragment

Title
The effects of the Frag-Loc(A (R)) compression screw on distal radius fracture with a displaced dorsoulnar fragment
Author
이정일
Keywords
Distal radius fracture; Volar locking plate; Palmar locking plate; Dorsoulnar fragment; Frag-Loc screw
Issue Date
2015-07
Publisher
SPRINGER
Citation
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY, v. 135, NO 9, Page. 1315-1321
Abstract
The purpose of this study is to evaluate the radiographic and clinical outcomes of the Frag-Loc(A (R)) compression screw with palmar plate fixation on distal radius fractures that include a displaced dorsoulnar fragment. This retrospective comparative study enrolled 48 patients who had an unstable distal radius fracture and a dorsoulnar fragment that was more than 2 mm displaced and that had involvement of more than one-quarter of the articular surface. Twenty-six of the 48 patients were treated with a palmar locking plate without a Frag-Loc(A (R)) compression screw (group 1) and the other 22 patients were treated with palmar locking plate with a Frag-Loc(A (R)) compression screw to fix the dorsoulnar fragment (group 2). First, we reviewed all pre-surgical computerized tomographic (CT) scans. Second, we used the gap distance between the dorsoulnar and palmar fragment as seen on post-surgical axial and sagittal CT scans to determine outcome. The gap distance was measured at the point of maximum distance perpendicular to the plane of the main fracture line. Clinical outcomes were evaluated based on the patient-rated wrist evaluation (PRWE) score; the disabilities of the arm, shoulder and hand score; wrist active range of motion; and grip strength. There were no statistically significant differences in clinical outcome between the two groups. However, there were statistically significant differences in post-surgical gap distance. The mean post-surgical gap distances for group 1 were 1.3 mm (range 0.2-3.8 mm) on axial CT scans and 1.4 mm (range 0.5-2.4 mm) on sagittal CT scans, while the mean post-surgical gap distances for group 2 were 0.7 mm (range 0.7-1.6 mm) and 0.7 mm (range 0.3-1.1 mm). This study shows that the Frag-Loc(A (R)) compression screw can reduce the gap distance between the dorsoulnar fragment and the distal radius, according to evaluation of post-surgical axial and sagittal CT scans. This result suggests that the Frag-Loc(A (R)) compression screw is an effective and simple treatment option to immobilize a dorsoulnar fragment associated with distal radius fracture.
URI
http://link.springer.com/article/10.1007/s00402-015-2290-yhttp://hdl.handle.net/20.500.11754/26624
ISSN
0936-8051; 1434-3916
DOI
10.1007/s00402-015-2290-y
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COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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