Arch Hand Microsurg 2019; 24(3): 234-242  
A Prospective, Multicenter, Observational Study to Assess Distal Radius Fracture Treatment Outcomes Using the Variable-Angle Locking Compression Plate
Sung-Lim Yoo1, Ho-Jae Lee2, Soo-Hong Han3, Jae Kwang Kim4
1Department of Orthopedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea
2Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea
3Department of Orthopaedic Surgery, CHA Gumi Medical Center, CHA University, Gumi, Korea
4Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
Correspondence to: Jae Kwang Kim
Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea
TEL: +82-2-3010-3523, FAX: +82-2-3010-8555, E-mail: orth4535@gmail.com, ORCID: https://orcid.org/0000-0001-5104-4634
Received: February 27, 2019; Revised: May 15, 2019; Accepted: May 29, 2019; Published online: September 1, 2019.
© Korean Society for Surgery of the Hand, Korean Society for Microsurgery, and Korean Society for Surgery of the Peripheral Nerve. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Purpose: The 2.4 mm variable-angle locking compression plate (VA-LCP) is designed to treat a variety of distal radius fracture patterns. The purpose of this study was to evaluate the efficacy of the 2.4 mm VA-LCP in treating unstable distal radius fractures.
Methods: We recruited eligible patients treated with the device at two Korean sites. In total, we studied 61 enrolled patients. We assessed clinical outcomes and radiographic union, as well as the types of plates and the number of variable-angle locking screws used in the treatment of each fracture type. Radiographic parameters were evaluated at the immediate postoperative period and at 1 year after operation.
Results: A total of five complications occurred in 61 patients (8.2%). Radiographic union was achieved in 46/51 (90.2%), 50/51 (98.0%), and 51/51 (100%) patients at 3, 6, and 12 months, respectively. Radiographic parameters evaluated at the immediate postoperative period were 22.4±4.2 degrees (radial inclination), 4.7±0.4 degrees (volar tilt) and 0.8±0.2 degrees (ulnar variance). Radiographic parameters evaluated at 1 year after operation were 21.3±3.4 degrees (radial inclination), 4.1±0.4 degrees (volar tilt) and 1.2±0.3 degrees (ulnar variance). Wrist range of motion and grip strength measurements, as well as self-administered patient questionnaires showed continuous improvements at all follow-up time points. The mean number of screws that were inserted through variable-angle screw guide was 3.2±0.9, while that of screws inserted through fixed-angle screw guide was 3.5±0.9. The majority of patients (85.3%) were treated with a narrow plate.
Conclusion: The findings of this study show promising results for the treatment of unstable distal radius fractures using the VA-LCP System.
Keywords: Radius, Radius fracture, Variable-angle locking compression plate


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