Plaass Christian, Ettinger Sarah, Sonnow Lena, Koenneker Soeren, Noll Yvonne, Weizbauer Andreas, Reifenrath Janin, Claassen Leif, Daniilidis Kiriakos, Stukenborg-Colsman Christina, Windhagen Henning
Department of Orthopedic Surgery, Hannover Medical School, Anna-von-Borries Strasse 1-7, 30625 Hannover, Germany.
Institute for Radiology, Hannover Medical School, Carl-Neuberg Strasse 1, 30625, Hannover, Germany.
J Orthop Res. 2016 Dec;34(12):2207-2214. doi: 10.1002/jor.23241. Epub 2016 Apr 7.
This is the first larger study analyzing the use of magnesium-based screws for fixation of modified Chevron osteotomies in hallux valgus surgery. Forty-four patients (45 feet) were included in this prospective study. A modified Chevron osteotomy was performed on every patient and a magnesium screw used for fixation. The mean clinical follow up was 21.4 weeks. The mean age of the patients was 45.5 years. Forty patients could be provided with the implant, in four patients the surgeon decided to change to a standard metallic implant. The AOFAS, FAAM and pain NRS-scale improved markedly. The hallux valgus angle, intermetatarsal angle and sesamoid position improved significantly. Seven patients showed dorsal subluxation, rotation or medial shifting of the metatarsal heads within the first 3 months. One of these patients was revised, in all others the findings were considered clinically not significant or the patients refused revision. This study shows the feasibility of using magnesium screws in hallux valgus-surgery. Surgeons starting with the use of these implants should be aware of the proper handling of these implants and should know about corrosion effects during healing and its radiographic appearance. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:2207-2214, 2016.
这是第一项分析镁基螺钉在拇外翻手术中用于改良契形截骨固定的大型研究。本前瞻性研究纳入了44例患者（45足）。对每位患者均实施了改良契形截骨术，并使用镁螺钉进行固定。平均临床随访时间为21.4周。患者的平均年龄为45.5岁。40例患者使用了该植入物，4例患者中外科医生决定改用标准金属植入物。美国足踝外科协会（AOFAS）评分、足踝功能评估量表（FAAM）评分和疼痛数字评定量表（NRS）评分均显著改善。拇外翻角、跖间角和籽骨位置均有显著改善。7例患者在最初3个月内出现跖骨头背侧半脱位、旋转或向内侧移位。其中1例患者接受了翻修手术，其他患者的这些表现被认为在临床上无显著意义或患者拒绝翻修。本研究表明了在拇外翻手术中使用镁螺钉的可行性。刚开始使用这些植入物的外科医生应了解这些植入物的正确操作方法，并应知晓愈合过程中的腐蚀效应及其影像学表现。©2016骨科学研究协会。由威利期刊公司出版。《矫形外科学研究杂志》2016年第34卷：2207 - 2214页。
