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Bones of the Lower Limb: Tibia and Fibula01:10

Bones of the Lower Limb: Tibia and Fibula

The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...

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Related Experiment Video

Updated: Jun 26, 2026

Automated Joint Space Detection Improves Bone Segmentation Accuracy
06:45

Automated Joint Space Detection Improves Bone Segmentation Accuracy

Published on: November 28, 2025

A multisegmental foot model with bone-based referencing: sensitivity to radiographic input parameters.

Jason T Long1, Mei Wang, Jack M Winters

  • 1Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA. jlong@mcw.edu

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|January 24, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces a new foot and ankle kinematic model. Accurate radiographic measurements are crucial for precise 3D orientation analysis, especially considering cross-plane influences.

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Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Related Experiment Videos

Last Updated: Jun 26, 2026

Automated Joint Space Detection Improves Bone Segmentation Accuracy
06:45

Automated Joint Space Detection Improves Bone Segmentation Accuracy

Published on: November 28, 2025

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Area of Science:

  • Biomechanics
  • Orthopedics
  • Kinesiology

Background:

  • Accurate measurement of foot and ankle kinematics is essential for understanding biomechanical function and diagnosing pathologies.
  • Existing models may not fully account for the complex 3D orientation of multiple foot and ankle segments.
  • Integrating bony anatomy with skin marker data is critical for precise kinematic analysis.

Purpose of the Study:

  • To present a novel kinematic model for measuring the 3D orientation of multiple foot and ankle segments.
  • To establish neutral alignments based on underlying bony segment orientations.
  • To index skin-mounted marker orientation to bony anatomy using weight-bearing X-ray data.

Main Methods:

  • Development of a new 3D kinematic model for the foot and ankle.
  • Utilizing weight-bearing X-rays to align skin markers with bony anatomy.
  • Performing sensitivity analysis of the model using walking trial data to assess radiographic input parameter influence.

Main Results:

  • Kinematic output in each plane was most sensitive to radiographic measurements within that same plane.
  • Perturbations in coronal and transverse planes showed significant carry-over effects into other planes.
  • The model's sensitivity analysis underscores the importance of accurate anatomical data.

Conclusions:

  • Accurate accounting for underlying bony anatomy is paramount for precise intersegmental kinematic measurements.
  • The developed model provides a framework for improved 3D foot and ankle motion analysis.
  • Understanding cross-plane sensitivities is vital for robust kinematic modeling in the foot and ankle.