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Related Experiment Videos

Improvements in balance after total hip replacement.

M Majewski1, H A Bischoff-Ferrari, C Grüneberg

  • 11Department of Orthopaedics, Kantonsspital, CH-4410, Liestal, Switzerland.

The Journal of Bone and Joint Surgery. British Volume
|September 29, 2005
PubMed
Summary

Total hip replacement improves balance control in patients with hip osteoarthritis during gait and sit-to-stand tasks. However, residual trunk instability suggests continued fall risk, necessitating cautious follow-up.

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Area of Science:

  • Orthopedics
  • Biomechanics
  • Gerontology

Background:

  • Osteoarthritis of the hip significantly impacts balance control, increasing fall risk.
  • Pre-operative balance deficits in gait and sit-to-stand tasks are common in hip osteoarthritis patients.
  • Understanding balance recovery post-total hip replacement is crucial for patient outcomes.

Purpose of the Study:

  • To investigate the effect of unilateral total hip replacement on balance control during stance, gait, and sit-to-stand tasks.
  • To compare balance parameters in patients before and after surgery with healthy controls.
  • To identify residual balance deficits after total hip replacement.

Main Methods:

  • 25 patients with hip osteoarthritis undergoing total hip replacement were assessed pre-operatively and at 4 and 12 months post-surgery.

Related Experiment Videos

  • 50 age-matched healthy individuals served as the control group.
  • Balance was quantified using angular measurements of trunk movement (pitch and roll velocities) during various functional tasks.

    • Main Results:

    • Pre-surgery, patients exhibited abnormal balance during gait and sit-to-stand tasks, but not during stance.
    • Total hip replacement led to progressive balance improvement at 4 and 12 months, approaching control group levels for most tasks.
    • Residual deficits in trunk pitch and roll velocities during gait over barriers and sit-to-stand tasks were observed at 12 months.

    Conclusions:

    • Symptomatic hip osteoarthritis causes significant balance deficits, potentially explaining increased fall risk.
    • Total hip replacement can restore near-normal balance control for several gait tasks.
    • Persistent trunk velocity deficits after surgery indicate a need for cautious follow-up regarding fall risk, particularly in elderly patients.