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Related Experiment Videos

Morphological changes during early trans-tibial prosthetic fitting

M Lilja1, P Hoffmann, T Oberg

  • 1Department of Biomechanics and Orthopaedic Technology, University College of Health Sciences, Jönköping, Sweden.

Prosthetics and Orthotics International
|September 25, 1998
PubMed
Summary
This summary is machine-generated.

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Changes in amputation stump shape after trans-tibial amputation impact prosthetic fit. A study using MRI found the lateral muscle group

Area of Science:

  • Biomedical Engineering
  • Orthopedics
  • Prosthetics

Background:

  • Morphological changes in amputation stumps affect prosthetic socket fit and suspension.
  • Previous research indicated trans-tibial stump volume decreases post-amputation, stabilizing around four months.
  • Understanding stump morphology is crucial for effective prosthetic limb fitting.

Observation:

  • Magnetic Resonance Imaging (MRI) was employed to analyze morphological changes in trans-tibial amputation stumps.
  • The study examined cross-sectional areas of the entire stump and distinct muscle groups.
  • A small cohort of patients undergoing trans-tibial amputation was included.

Findings:

  • The medial muscle group and overall stump cross-sectional area decreased as hypothesized, showing an initial rapid decline followed by slower reduction.

Related Experiment Videos

  • The lateral muscle group exhibited an alternative pattern: an initial decrease followed by a significant increase, sometimes exceeding pre-amputation size.
  • These differential changes suggest the lateral muscle group may adapt to aid in prosthetic socket suspension.

    • Implications:

    • Findings challenge previous assumptions about uniform stump volume reduction.
    • The adaptive changes in the lateral muscle group may offer new strategies for prosthetic socket design and suspension.
    • This research highlights the importance of considering dynamic morphological changes for improved prosthetic fitting in trans-tibial amputees.