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Related Experiment Videos

Acute bone changes after lower limb amputation resulting from traumatic injury.

D A Bemben1, V D Sherk2, W J J Ertl3

  • 1Bone Density Research Laboratory, Department of Health and Exercise Science, University of Oklahoma, 1401 Asp Avenue, Norman, OK, 73019, USA. dbemben@ou.edu.

Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
|April 3, 2017
PubMed
Summary

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Lower limb amputees experience significant bone loss in the first year of prosthesis use. Interventions are needed early post-amputation to prevent bone density and strength decline.

Area of Science:

  • Orthopedics
  • Bone Metabolism
  • Prosthetics

Background:

  • Lower limb amputation leads to significant bone density deficits.
  • The progression of bone quality changes post-amputation is not well understood.

Purpose of the Study:

  • To quantify bone quality changes in the amputated limb during early stages post-amputation.

Main Methods:

  • Assessed bone mineral density (BMD), volumetric BMD (vBMD), and bone strength (SSI) in eight unilateral amputees.
  • Measurements were taken pre-ambulatory and at 6 and 12 months post-prosthesis fitting.
  • Bone turnover markers were also analyzed.

Main Results:

  • Hip areal BMD decreased 11-15% and persisted for 12 months.
Keywords:
Bone densityBone geometryBone remodelingProsthesisTrauma

Related Experiment Videos

  • Amputated bone showed significant decreases in BMC, vBMD, and SSI by 6 months, maintained at 12 months.
  • Increased cortical porosity and altered bone turnover markers were observed.
  • Conclusions:

    • Rapid bone loss occurs early after amputation and does not recover within the first year.
    • Early post-amputation is a critical window for interventions to mitigate bone loss.