Experimental and finite element analysis studies of a reduction-force reducing traction method for pelvic fracture surgeries

Liu, Jixuan; Xu, Ke; Zhao, Chunpeng; Zhu, Gang; Wang, Yu; Wu, Xinbao; Tian, Wei

doi:10.1016/j.medntd.2021.100101

Cited by 11 publications

(6 citation statements)

References 28 publications

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“…We then compared the stress distribution on the femur and PFNA. According to the average fatigue stress of human bones, which is 200Mpa [ [36] , [37] , [38] ], stress exceeding 100Mpa was termed a high-stress region. On the femurs of old models with anterior and posterior cortical support, there are substantial red regions (high-stress zones).…”

Section: Discussionmentioning

confidence: 99%

Sagittal support rather than medial cortical support matters in geriatric intertrochanteric fracture: A finite element analysis study

Liu,

Ge,

Wang

et al. 2024

Heliyon

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Section: Discussionmentioning

confidence: 99%

Sagittal support rather than medial cortical support matters in geriatric intertrochanteric fracture: A finite element analysis study

Liu,

Ge,

Wang

et al. 2024

Heliyon

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“…However, the former wastes the workforce, while the latter greatly limits the flexibility of the reduction process. In order to minimize the load on the robotic arm and solve the difficulties mentioned above, we designed an elastic traction device which was described in detail before [ 10 ], and listed it as a necessary component of our robot system. After reduction, the surgeon performed the final fixations manually while the robot arm firmly maintained the reduction.…”

Section: Discussionmentioning

confidence: 99%

“…The assistance part includes two components. One is an elastic traction system, which was described before in another study to facilitate fracture reduction and help reduce the force applied by robotic arm [ 10 ]. The other is a passive arm system, which has two 9-degree of freedom (DOF) passive holders installed at the healthy hemipelvis side and helps firmly fix the pelvis.…”

Section: Introductionmentioning

confidence: 99%

Robot-Assisted Autonomous Reduction of a Displaced Pelvic Fracture: A Case Report and Brief Literature Review

Zhao

Wang

et al. 2022

JCM

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Displaced pelvic fracture is among the most complicated fractures in traumatic orthopedics, with high mortality and morbidity. Reduction is considered a complex procedure as well as a key part in surgical treatment. However, few robotic techniques have been employed in the reduction of pelvic fracture, despite the rapid advancement of technologies. Recently, we designed a robot surgery system specialized in the autonomous reduction of displaced pelvic fracture and applied it in the true patient for the first time. In this paper, we report its successful clinical debut in the surgery of a displaced pelvic fracture. Total surgery time was 110 min and an anatomic reduction was achieved. We then present a brief overview of the literature about reduction techniques in pelvic fracture and introduce related principles involved in our robot-assisted reduction system.

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“…The holding device is constituted by two nine-degree-of-freedom electrically controlled passive arms, connected to the operating table via a U-shaped base, ensuring secure stabilization of the unaffected hemipelvis. Positioned at the foot end of the operating table, the elastic traction device was installed to counterbalance the restraining forces exerted by the soft tissues surrounding the pelvis during the reduction process [31] .…”

Section: Introduction To the Intelligent Rafr Systemmentioning

confidence: 99%

Intelligent robot-assisted fracture reduction system for the treatment of unstable pelvic fractures

Wu,

Dai,

Zeng

2024

Preprint

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Background: Precise and minimally invasive closed reduction is the premise of minimally invasive internal fixation. This paper aims to explore the safety and efficacy of a robot-assisted fracture reduction system (RAFR) in the treatment of pelvic fractures and to analyze its clinical advantages and existing problems. Methods: The RAFR system intelligently designed the optimal reduction path and target position based on a preoperative three-dimensional(3D) CT scan of the patient. The reduction robotic arm automatically reduced the affected hemipelvis according to the pre-planned reduction path. Results: The average residual displacement was the 6.65±3.59mm. According to Matta’s criteria, there were 7 excellent, 10 good, and 3 fair, and the excellent and good rate was 85%. No postoperative complications occurred. Conclusion: In our study, the RAFR system could complete accurate and minimally invasive closed reduction for most patients with unstable pelvic fractures, which could achieve good fracture reduction quality and short-term efficacy.

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Experimental and finite element analysis studies of a reduction-force reducing traction method for pelvic fracture surgeries

Cited by 11 publications

References 28 publications

Sagittal support rather than medial cortical support matters in geriatric intertrochanteric fracture: A finite element analysis study

Sagittal support rather than medial cortical support matters in geriatric intertrochanteric fracture: A finite element analysis study

Robot-Assisted Autonomous Reduction of a Displaced Pelvic Fracture: A Case Report and Brief Literature Review

Intelligent robot-assisted fracture reduction system for the treatment of unstable pelvic fractures

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