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  • Title: [Multidirectional palmar fixed-angle plate fixation for unstable distal radius fracture].
    Author: Mehling I, Meier M, Schlör U, Krimmer H.
    Journal: Handchir Mikrochir Plast Chir; 2007 Feb; 39(1):29-33. PubMed ID: 17402137.
    Abstract:
    PURPOSE/BACKGROUND: Open reduction and internal fixation with plates is a valid treatment of displaced extra- and intra-articular distal radius fractures. This report presents our experience treating unstable distal radius fractures by using a multidirectional palmar fixed-angle plate system (Aptus(R) Radius 2.5 by Medartis). The subchondral support of the articular surface by fixed angle screws prevents secondary dislocation allowing early mobilisation. PATIENTS AND METHOD: 61 patients with distal radius fractures were treated during 6/2003 and 10/2004 using this palmar fixed-angle plate fixation without bonegraft. Postoperative X-rays showed anatomical reduction in all cases. 55 patients could be evaluated postoperatively. The follow-up examination included the patient's history, physical and radiographic examination as well as the DASH questionnaire and the Krimmer's modified Cooney wrist score. RESULTS: The average follow-up time was 9.6 +/- 5.2 months. The mean age of the examined patients was 53.9 +/- 17.8 years. The fractures were classified according to AO. There were eleven A3, four B2 and five B3 fractures, ten C1, 16 C2 and nine C3 fractures. All fractures united without complications. Just two cases showed a loss of length. At follow-up the average palmar angulation was 8 degrees , ulnar inclination 21 degrees and ulnar variance + 0.2 mm. Wrist motion averaged a decrease for extension and flexion of 12 %, for ulnar and radial deviation of 9 % and for pronation and supination only of 2 % in comparison to the uninjured side. Grip strength reached an average of 85 % of the contralateral side. Patients regained good function as represented in a mean DASH score of 14 points and a Krimmer score of 82 points. CONCLUSIONS: The treatment of unstable distal radius fractures with this plate fixation provided stable internal fixation and allowed early function. Due to multidirectional angle fixation and two lines of cortical screws it is possible to achieve an optimal restoration. The fixation of the central articular surface is guaranteed by the distal line, the dorsal subchondral support by the proximal line.
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