Nonlinear Analysis of Postural Sway in Subjects with Below Knee Amputation During Opened and Closed Eye Conditions

Overview

Journal J Orthop

Specialty Orthopedics

Date 2016 Jul 14

PMID 27408487

Authors

Meissam Sadeghisani

Mohammad Taghi Karimi

Mostafa Kamali

Affiliations

Soon will be listed here.

Abstract

Objective: The aim of this study was to compare the structure of postural sway in healthy people and amputees with SACH foot (solid ankle cushion heel) and single axis foot during standing.

Methods: Twenty healthy, 10 amputees with single axis foot, and 10 amputees with SACH foot participated in this study. The structure of postural sway of the subjects was evaluated using approximate entropy (ApEn).

Results: People with SACH foot prosthesis exhibit increased regularity in postural sway compared to healthy people and people with single axis foot.

Conclusion: Amputees who used single axis prosthesis achieved appropriate adaptation to their prosthesis device.

References

EDWARDS A . Body sway and vision. J Exp Psychol. 2010; 36(6):526-35. DOI: 10.1037/h0059909. View

Pincus S . Approximate entropy as a measure of system complexity. Proc Natl Acad Sci U S A. 1991; 88(6):2297-301. PMC: 51218. DOI: 10.1073/pnas.88.6.2297. View

Pincus S . Approximate entropy (ApEn) as a complexity measure. Chaos. 1995; 5(1):110-117. DOI: 10.1063/1.166092. View

Kavounoudias A, Tremblay C, Gravel D, Iancu A, Forget R . Bilateral changes in somatosensory sensibility after unilateral below-knee amputation. Arch Phys Med Rehabil. 2005; 86(4):633-40. DOI: 10.1016/j.apmr.2004.10.030. View

Day B, Steiger M, Thompson P, Marsden C . Effect of vision and stance width on human body motion when standing: implications for afferent control of lateral sway. J Physiol. 1993; 469:479-99. PMC: 1143881. DOI: 10.1113/jphysiol.1993.sp019824. View

Grace Gaerlan M, Alpert P, Cross C, Louis M, Kowalski S . Postural balance in young adults: the role of visual, vestibular and somatosensory systems. J Am Acad Nurse Pract. 2012; 24(6):375-81. DOI: 10.1111/j.1745-7599.2012.00699.x. View

Vittas D, Larsen T, Jansen E . Body sway in below-knee amputees. Prosthet Orthot Int. 1986; 10(3):139-41. DOI: 10.3109/03093648609164518. View

Unwin N . Epidemiology of lower extremity amputation in centres in Europe, North America and East Asia. Br J Surg. 2000; 87(3):328-37. DOI: 10.1046/j.1365-2168.2000.01344.x. View

Cavanaugh J, Guskiewicz K, Giuliani C, Marshall S, Mercer V, Stergiou N . Detecting altered postural control after cerebral concussion in athletes with normal postural stability. Br J Sports Med. 2005; 39(11):805-11. PMC: 1725054. DOI: 10.1136/bjsm.2004.015909. View

10.

Cybulski G, Jaeger R . Standing performance of persons with paraplegia. Arch Phys Med Rehabil. 1986; 67(2):103-8. DOI: 10.1016/0003-9993(86)90113-9. View

11.

Deffeyes J, Harbourne R, Stuberg W, Stergiou N . Approximate entropy used to assess sitting postural sway of infants with developmental delay. Infant Behav Dev. 2010; 34(1):81-99. PMC: 3032039. DOI: 10.1016/j.infbeh.2010.10.001. View

12.

Rigoldi C, Cimolin V, Camerota F, Celletti C, Albertini G, Mainardi L . Measuring regularity of human postural sway using approximate entropy and sample entropy in patients with Ehlers-Danlos syndrome hypermobility type. Res Dev Disabil. 2012; 34(2):840-6. DOI: 10.1016/j.ridd.2012.11.007. View

13.

Rougier P, Bergeau J . Biomechanical analysis of postural control of persons with transtibial or transfemoral amputation. Am J Phys Med Rehabil. 2009; 88(11):896-903. DOI: 10.1097/PHM.0b013e3181b331af. View

14.

Murray M, Seireg A, Sepic S . Normal postural stability and steadiness: quantitative assessment. J Bone Joint Surg Am. 1975; 57(4):510-6. View

15.

Cavanaugh J, Guskiewicz K, Stergiou N . A nonlinear dynamic approach for evaluating postural control: new directions for the management of sport-related cerebral concussion. Sports Med. 2005; 35(11):935-50. DOI: 10.2165/00007256-200535110-00002. View

16.

Pincus S, Kalman R . Not all (possibly) "random" sequences are created equal. Proc Natl Acad Sci U S A. 1997; 94(8):3513-8. PMC: 20470. DOI: 10.1073/pnas.94.8.3513. View

17.

Zahedi M, Spence W, Solomonidis S, Paul J . Alignment of lower-limb prostheses. J Rehabil Res Dev. 1986; 23(2):2-19. View

18.

Huisinga J, Yentes J, Filipi M, Stergiou N . Postural control strategy during standing is altered in patients with multiple sclerosis. Neurosci Lett. 2012; 524(2):124-8. DOI: 10.1016/j.neulet.2012.07.020. View

19.

Cavanaugh J, Mercer V, Stergiou N . Approximate entropy detects the effect of a secondary cognitive task on postural control in healthy young adults: a methodological report. J Neuroeng Rehabil. 2007; 4:42. PMC: 2174494. DOI: 10.1186/1743-0003-4-42. View

20.

Quai T, Brauer S, Nitz J . Somatosensation, circulation and stance balance in elderly dysvascular transtibial amputees. Clin Rehabil. 2005; 19(6):668-76. DOI: 10.1191/0269215505cr857oa. View