在前路开放楔形截骨术中构建稳定性：评估3d打印聚乳酸楔形对皮质骨的影响

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-04-02 DOI:10.1016/j.clinbiomech.2025.106509

Kai Hoffeld , Jan P. Hockmann , Christopher Wahlers , Peer Eysel , Michael Hackl , Johannes Oppermann

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引用次数: 0

摘要

本体外生物力学研究旨在评估在胫骨近端前路开放楔形截骨术中使用楔形作为间隙填充物是否可以减少螺钉板结构的负荷，并评估3d打印聚乳酸楔形是否提供与骨楔形相似的生物力学稳定性。方法将24例尸体胫骨近端随机分为3组：单独使用TomoFix钢板作为对照组、带骨楔的TomoFix钢板和带3d打印聚乳酸楔的TomoFix钢板。试件分别承受400牛、800牛和1200牛的轴向载荷1000次。测量压缩深度和轴向刚度以评估稳定性。结果：两组间总的压缩深度和轴向刚度无显著差异(p >；0.05)。在1200 N时，对照组8个标本中有6个发生铰链骨折，而楔形组8个标本中有0个发生铰链骨折。骨楔和聚乳酸楔都提高了结构的稳定性，聚乳酸楔的性能与骨楔相当。结论在胫骨近端前路开放楔形截骨术中，无论是骨还是聚乳酸楔形，ap填充物都可能有助于结构稳定性。3d打印的聚乳酸楔在生物力学上可能与骨楔相当，这表明其在临床应用中的替代潜力。

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查看原文本刊更多论文

Construct stability in anterior open wedge osteotomy: Assessing 3D-printed polylactic acid wedges against cortical bone

Background

This in-vitro biomechanical study aimed to assess whether using a wedge as a gap filler in anterior open wedge osteotomy of the proximal tibia reduces load on the screw-plate construct and to evaluate if a 3D-printed polylactic acid wedge offers similar biomechanical stability like a bone wedge.

Methods

Twenty-four cadaveric proximal tibiae were randomly assigned to one of three groups: TomoFix plate alone as control group, TomoFix plate with a bone wedge, and TomoFix plate with a 3D-printed polylactic acid wedge. The specimens were subjected to axial loads of 400 N, 800 N, and 1200 N for 1000 cycles. Compression depth and axial stiffness were measured to assess stability.

Findings

There were no significant differences in overall compression depth or axial stiffness between the groups (p > 0.05). At 1200 N, hinge fractures occurred in 6 of 8 specimens in the control group, compared to 0 of 8 in the wedge groups. Both bone and polylactic acid wedges improved construct stability, with the polylactic acid wedge performing comparably to the bone wedge.

Interpretation

Gap fillers, whether bone or polylactic acid wedges, may contribute construct stability in anterior open wedge osteotomy of the proximal tibia. The 3D-printed polylactic acid wedge may be biomechanically comparable to the bone wedge, suggesting its potential as an alternative in clinical applications.

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来源期刊

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.