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Weight-bearing asymmetry in individuals post-hip fracture during the sit to stand task.

Publication ,  Journal Article
Kneiss, JA; Hilton, TN; Tome, J; Houck, JR
Published in: Clin Biomech (Bristol)
January 2015

BACKGROUND: Individuals post hip fracture decrease force on the involved limb during sit to stand tasks, creating an asymmetry in vertical ground reaction force. Joint specific differences that underlie asymmetry of the vertical ground reaction force are unknown. The purpose of this study was to compare differences in vertical ground reaction force variables and joint kinetics at the hip and knee in participants post-hip fracture, who were recently discharged from homecare physical therapy to controls. METHODS: Forty-four community-dwelling older adults, 29 who had a hip fracture and 15 elderly control participant's completed the sit to stand task on an instrumented chair with 3 force plates. T-tests were used to compare clinical tests (Berg Balance Scale, activity balance confidence and gait speed, isokinetic knee strength) and vertical ground reaction force variables. Two-way analyses of variance compared vertical ground reaction force variables and kinetics at the hip and knee between hip fracture and elderly control groups. Pearson correlation coefficients were used to determine correlations between clinical and vertical ground reaction force variables. FINDINGS: Vertical ground reaction force variables were significantly lower on the involved side for the hip fracture group compared to the uninvolved side and controls. Lower involved side hip and knee moments and power contributed to lower involved side vertical ground reaction force. Vertical ground reaction force variables and strength had moderate to high correlations with clinical measures. INTERPRETATION: Uninvolved side knee moments and powers were the largest contributors to asymmetrical vertical ground reaction force in participants post-hip fracture. The association of vertical ground reaction force variables and clinical measures of function suggesting reducing vertical ground reaction force asymmetry may contribute to higher levels of function post-hip fracture. Functional and strength training should target the involved knee to reduce vertical ground reaction force asymmetry.

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Published In

Clin Biomech (Bristol)

DOI

EISSN

1879-1271

Publication Date

January 2015

Volume

30

Issue

1

Start / End Page

14 / 21

Location

England

Related Subject Headings

  • Weight-Bearing
  • Task Performance and Analysis
  • Postural Balance
  • Orthopedics
  • Male
  • Knee
  • Kinetics
  • Humans
  • Hip Fractures
  • Hip
 

Citation

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Kneiss, J. A., Hilton, T. N., Tome, J., & Houck, J. R. (2015). Weight-bearing asymmetry in individuals post-hip fracture during the sit to stand task. Clin Biomech (Bristol), 30(1), 14–21. https://doi.org/10.1016/j.clinbiomech.2014.11.012
Kneiss, Janet A., Tiffany N. Hilton, Josh Tome, and Jeff R. Houck. “Weight-bearing asymmetry in individuals post-hip fracture during the sit to stand task.Clin Biomech (Bristol) 30, no. 1 (January 2015): 14–21. https://doi.org/10.1016/j.clinbiomech.2014.11.012.
Kneiss JA, Hilton TN, Tome J, Houck JR. Weight-bearing asymmetry in individuals post-hip fracture during the sit to stand task. Clin Biomech (Bristol). 2015 Jan;30(1):14–21.
Kneiss, Janet A., et al. “Weight-bearing asymmetry in individuals post-hip fracture during the sit to stand task.Clin Biomech (Bristol), vol. 30, no. 1, Jan. 2015, pp. 14–21. Pubmed, doi:10.1016/j.clinbiomech.2014.11.012.
Kneiss JA, Hilton TN, Tome J, Houck JR. Weight-bearing asymmetry in individuals post-hip fracture during the sit to stand task. Clin Biomech (Bristol). 2015 Jan;30(1):14–21.
Journal cover image

Published In

Clin Biomech (Bristol)

DOI

EISSN

1879-1271

Publication Date

January 2015

Volume

30

Issue

1

Start / End Page

14 / 21

Location

England

Related Subject Headings

  • Weight-Bearing
  • Task Performance and Analysis
  • Postural Balance
  • Orthopedics
  • Male
  • Knee
  • Kinetics
  • Humans
  • Hip Fractures
  • Hip