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Related Concept Videos

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...
Muscles of the Leg that Move the Foot and Toes01:28

Muscles of the Leg that Move the Foot and Toes

The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles.
Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...
Ankle Joint01:10

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Lower-Limb Biomechanical Characteristics Associated with Unplanned Gait Termination Under Different Walking Speeds
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Published on: August 25, 2020

Internal loads in the human tibia during gait.

Tim Wehner1, Lutz Claes, Ulrich Simon

  • 1Institute of Orthopaedic Research and Biomechanics, University of Ulm, Germany. timwehner@web.de

Clinical Biomechanics (Bristol, Avon)
|February 3, 2009
PubMed
Summary
This summary is machine-generated.

This study quantifies internal tibial loads during gait, revealing axial forces up to 4.7 bodyweight and sagittal bending moments up to 71.6 bodyweight x mm. These findings aid in optimizing tibial fracture implants.

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Area of Science:

  • Biomechanics
  • Orthopedic Engineering
  • Human Locomotion Analysis

Background:

  • Internal bone loads are critical for designing and testing orthopedic implants for fracture treatment.
  • Previous research successfully modeled lower extremity muscle forces but lacked tibial internal load data during gait.

Purpose of the Study:

  • To determine the three-dimensional internal loads (forces and moments) along the human tibia during normal gait.
  • To provide data for improving the mechanical performance of tibial fracture fixation implants.

Main Methods:

  • Utilized a modified, open-source musculoskeletal model of the lower extremities.
  • Calculated three-dimensional internal loads along the tibial axis during gait simulations.
  • Validated the model by comparing hip contact force and tibial plateau axial force to existing in vivo data.

Main Results:

  • Peak axial force reached 4.7 times bodyweight, and peak sagittal bending moment reached 71.6 bodyweight x mm during late stance.
  • Extreme internal load variations were up to 1.5 bodyweight and 85.7 bodyweight x mm.
  • Axial force dominated in the distal tibia, while internal moments increased proximally.

Conclusions:

  • This study presents the first comprehensive report of three-dimensional internal forces and moments in the human tibia during gait.
  • The generated data can inform the design of tibial implants to enhance their mechanical behavior and prevent in vivo failures.