https://scholars.lib.ntu.edu.tw/handle/123456789/621830
標題: | Pull-Out Capability of a 3D Printed Threadless Suture Anchor with Rectangular Cross-Section: A Biomechanical Study | 作者: | Hsieh, YY Wu, LC FON-YIH TSUANG Chen, CH Chiang, CJ |
關鍵字: | suture anchor; threadless; pull-out capability; 3D printing; biomechanical study; TRIANGULAR TITANIUM IMPLANTS; RANDOMIZED CONTROLLED-TRIAL; INSERTION ANGLE; SACROILIAC JOINT; ROTATOR CUFF; FUSION; COMPLICATIONS; MANAGEMENT | 公開日期: | 2021 | 出版社: | MDPI | 卷: | 11 | 期: | 24 | 來源出版物: | APPLIED SCIENCES-BASEL | 摘要: | Suture anchor fixation is a common method for securing bone and soft tissue in the body, with proven applications in the hip, elbow, hand, knee and foot. A critical limiting factor of suture anchors is the pull-out strength, particularly in suboptimal bone. This study introduces a novel 3D printed threadless suture anchor with a rectangular cross-section. The titanium anchor was designed with surface fenestration and a porous central core to improve bone ingrowth. The aim of this study was to compare the pull-out properties of the novel threadless anchor with a traditional circular threaded suture anchor. The anchors were inserted into a 0.24 g/cm3 synthetic cancellous bone block at angles of 90° and 135° to the surface. The sutures were pulled at 180° (parallel) to the surface under a static pull test (anchor pullout) and cyclic load test using a tensile testing machine. Under the static load, the greatest pullout strength was seen with the novel threadless anchor inserted at 90° (mean, 105.6 N; standard deviation [SD], 3.5 N). The weakest pullout strength was seen with the threaded anchor inserted at 90° (mean, 87.9 N; SD, 4.1 N). In the cyclic load test, all six of the threaded anchors with a 90° insertion angle pulled out after 18 cycles (70 N). All of the threadless anchors inserted at 90° survived the cyclic test (90 N). In conclusion, the novel threadless suture anchor with rectangular cross-section and traditional threaded suture anchor had similar pullout survivorship when inserted at either 90° or 135°. In addition, the 3D printed threadless anchor has the potential for good bone integration to improve long-term stabilization. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/621830 | ISSN: | 2076-3417 | DOI: | 10.3390/app112412128 |
顯示於: | 醫學系 |
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