Shanghai Institute for Minimally Invasive Therapy, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China.
Department of R&D of Special Equipment and Product, Institute of Microport Engineering, Shanghai MicroPort Medical (Group) Co., Ltd. Shanghai, China.
Technol Health Care. 2021;29(5):1001-1009. doi: 10.3233/THC-202420.
The treatment of adolescent patients with distal femoral cancer has always been a concern. The limb-salvage, regarded as a mainstream treatment, had been developed in recent years, but its application in children still remains challenging. This is because it can lead to potential limb-length discrepancy from the continued normal growth of the contralateral lower body. The extendable prosthesis could solve this problem. The principle is that it can artificially control the length of the prosthesis, making it consistent with the length of the side of the lower limbs. However, this prosthesis has some complications. The extendable prosthesis is classified into invasive and minimally invasive, which extends the prosthesis with each operation.
We designed a new non-invasive prosthesis that can be extended in the body. Based on the non-invasive and extendable characteristics, we need to verify the supporting performance of this prosthesis.
We carried out a mechanical testing method and finite element analysis simulation.
The support performance and non-invasively extension of this prosthesis were verified.
青少年股骨远端肿瘤患者的治疗一直是一个关注点。近年来，保肢治疗已得到发展，被视为主流治疗方法，但在儿童中的应用仍然具有挑战性。这是因为它可能会导致与对侧下半身的正常生长相比出现潜在的肢体长度差异。可延长假体可以解决这个问题。其原理是可以人为控制假体的长度，使其与下肢侧的长度保持一致。然而，这种假体存在一些并发症。可延长假体分为侵入式和微创式，通过每次手术来延长假体。
我们设计了一种新的非侵入式假体，可以在体内进行延长。基于非侵入性和可扩展性的特点，我们需要验证该假体的支撑性能。
我们进行了机械测试方法和有限元分析模拟。
验证了该假体的支撑性能和非侵入式延长。
