Evaluation of an electromechanical oscillatory device of the wrist for the assessment of the neural and non-neural components of upper-limb hyper-resistance in patients with central nervous system disorders

Selves, Clara;Stoquart, Gaëtan;Nguyen, Anh Phong;Haustrate, Marie-Adeline;Materne, Clara;et.al.
(2020) 11th world congress for Neurorehabilitation, 35th of the French Society of Physical and Rehabilitation Medicine — Location: Webinar (Lyon) (7.October.2020)

Files

AbstractWFNR_SOFMERClaraSelvesODC.pdf
  • Open Access
  • Adobe PDF
  • 204.78 KB
Download

Details

Authors
Show more
Abstract
Introduction In central nervous system diseases, joint hyper-resistance presents neural (CNS related) and non-neural (tissue related) components. Its assessment remains mostly clinical, and there is a need for new objective methods to evaluate it. Methods An electromechanical oscillatory device was designed to evaluate wrist stiffness (Wrist-EOD). It applies low amplitude sinusoidal wrist displacements in flexion and extension (10°), at frequencies between 3 and 12 Hertz. This produces a torque response that can be decomposed in viscous and elastic stiffness (Fourier analysis). The paretic and healthy upper limbs of twenty-two stroke patients were evaluated three times with the Wrist-EOD, to assess short and long-term reliability. Clinical and isokinetic (Cybex®) measurements of hyper-resistance were also performed. The Wrist-EOD was also performed in 12 stroke patients, before and after applying shock wave therapy (SWT) on wrist and fingers flexors, to assess its responsiveness to a spasticity treatment. Results Scores for viscous stiffness were significantly higher in comparison to the healthy wrist scores (p=0.008). The short-term ICC for elastic stiffness (0.91) and viscous stiffness (0.95) was excellent. The long-term reliability was moderate (ICC: 0.60 and 0.68). However, only poor correlations were found with clinical or isokinetic measurements. Wrist-EOD scores were significantly more reliable than isokinetic measurements. A significant decrease in spasticity was observed immediately after SWT in the wrist and fingers flexors (p=0.022 and 0.048, respectively). No significant difference was observed with Wrist-EOD. Conclusion The Wrist-EOD is a reliable and discriminative device to measure stiffness of the wrist, enabling to assess mostly non-neural component of hyper-resistance.
Affiliations

Citations

  • APA
  • Chicago
  • FWB

Selves, C., Stoquart, G., Nguyen, A. P., Haustrate, M.-A., Detrembleur, C., Selvais, P., Materne, C., & et al. (2020). Evaluation of an electromechanical oscillatory device of the wrist for the assessment of the neural and non-neural components of upper-limb hyper-resistance in patients with central nervous system disorders. 11th world congress for Neurorehabilitation, 35th of the French Society of Physical and Rehabilitation Medicine, Webinar (Lyon). https://hdl.handle.net/2078.5/117589