为什么 需要主动力?


当您失去肢体后,你也失去了这部分肌肉所带来的动力。利用盘古主动力技术重获肢体行进力量的好处显而易见,您将走的更高,去的更远。

减少能量消耗

“失去了部分肌肉,假肢使用者比健全人多消耗30-60%的能量” ¹

POWER KNEE盘古主动力膝关节与传统智能膝关节相比降低行走时的能量消耗²

提升对称性

对于大部分截肢患者来说,对称地行走是非常难的。不对称行走会影响截肢患者的日常耐力,并导致腰痛和骨关节炎。³⁻⁷

POWER KNEE盘古主动力膝关节能改善不同活动中的对称性*,如行走、站起、上下楼梯。²𝄒⁸⁻¹⁰

盘古主动力膝关节与传统微处理器膝关节相比有何不同?


被动假肢膝关节

没有肌肉提供动力,假肢膝关节只能被动代偿动力。在此基础上,微处理器膝关节(MPKs)可以更好地控制动作,比如在坐下时提供阻力或行走时控制速度等。在过去20年 ,MPKs已经给假肢行业带来了一场大变革,通过算法分析来提升安全性和运动能力。

但它还是无法提供我们行走时所需的一个重要因素——肌肉动力。

主动力假肢膝关节

盘古主动力膝关节创造了假肢膝关节中一个全新的类别,真正带领假肢界进入全新的纪元。

在微处理器技术上更进一步,提供主动动力来主动创造动作。采用谐波驱动电机提供动力,在整个步态周期中(如起身和上楼梯时)所消耗的能量更小,最终创造更自然、高效的动作。

参考文献

  1. Genin JJ, Bastien GJ, Franck B, Detrembleur C, Willems PA. Effect of speed on the energy cost of walking in unilateral traumatic lower limb amputees. Eur. J. Appl. Physiol. 2008;103(6): 655
  2. Power Knee Mainstream Dynamic - Evaluation Report Synopsis, Össur hf, Steinþóra Jónsdóttir (2021). Data on file at Össur.
  3. Devan H, Tumilty S, Smith C. Physical activity and lower-back pain in persons with traumatic transfemoral amputation: a national cross-sectional survey. J Rehabil Res Dev 2012;49(10):1457-66.
  4. Devan H, Hendrick P, Ribeiro DC, Hale LA, Carman A. Asymmetrical movements of the lumbopelvic region: is this a potential mechanism for low back pain in people with lower limb amputation? Med. Hypotheses 2014;82(1):77–85.
  5. Matsumoto ME, Czerniecki JM, Shakir A, Suri P, Orendurff MS, Morgenroth DC. The relationship between lumbar lordosis angle and low back pain in individuals with transfemoral amputation. Prosthet and Orthot Int 2019 Apr;43(2):227-232. Epub 2018 Aug 18.
  6. Morgenroth DC, Orendurff MS, Shakir A, Segal A, Shofer J, Czerniecki JM . The relationship between lumbar spine kinematics during gait and low-back pain in transfemoral amputees. Am J Phys Med Rehab 2010;89(8):635–43.
  7. Harandi VJ, Ackland DC, Haddara R, Lizama LE, Graf M, Galea MP, Lee PV. Gait compensatory mechanisms in unilateral transfemoral amputees. Medical Engineering & Physics. 2020 Jan 7.
  8. Wolf, E. J., Everding, V. Q., Linberg, A. A., Czerniecki, J. M. & Gambel, C. J. M. Comparison of the Power Knee and C-Leg during step-up and sit-to-stand tasks. Gait Posture 38, 397–402 (2013).
  9. Highsmith, M. J. et al. Kinetic asymmetry in transfemoral amputees while performing sit to stand and stand to sit movements. Gait Posture 34, 86–91 (2011).
  10. Knut Lechler. Biomechanics of sit-to-stand and stand-to-sit movements in unilateral transfemoral amputees using powered and non-powered prosthetic knees - Congress Lecture [5038] Abstract [1459]. (2014).

References for our brochure can be found here.