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Related Concept Videos

Knee Joint01:23

Knee Joint

2.4K
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
2.4K
Bones of the Lower Limb: Tibia and Fibula01:10

Bones of the Lower Limb: Tibia and Fibula

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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...
5.8K
Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

3.5K
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...
3.5K

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Related Experiment Video

Updated: Oct 3, 2025

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
09:01

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

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Total and partial knee arthroplasty implants that maintain native load transfer in the tibia.

Maxwell J Munford1, Jennifer C Stoddart1, Alexander D Liddle2

  • 1The Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, UK.

Bone & Joint Research
|February 16, 2022
PubMed
Summary

Titanium lattice knee implants successfully restored natural bone stress after unicompartmental and total knee arthroplasty. Conventional implants caused significant underloading, highlighting the potential of lattice designs for improved bone health and implant revision.

Keywords:
Additive manufacturingBone strainPorous implantsbone-implantcadaveric studykneeknee arthroplasty implantsproximal tibiatibial bonetibial implantstitaniumtotal knee arthroplasty (TKA)unicompartmental knee arthroplasty (UKA)

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Area of Science:

  • Biomaterials engineering
  • Orthopedic biomechanics
  • Surgical innovation

Background:

  • Knee replacement surgeries like unicompartmental (UKA) and total knee arthroplasty (TKA) are effective for osteoarthritis.
  • However, traditional solid metal implants can alter natural bone stress distribution, potentially leading to bone loss and revision complications.

Purpose of the Study:

  • To investigate if titanium lattice UKA and TKA implants can preserve natural load transfer in the proximal tibia.
  • To compare the mechanical environment created by lattice implants versus conventional solid implants.

Main Methods:

  • Cadaveric knee specimens (n=8) underwent UKA and TKA with both conventional solid and titanium lattice tibial implants.
  • Bone-implant interface stress was measured and compared to the native, pre-operative state.

Main Results:

  • Titanium lattice implants effectively replicated the native tibia's mechanical environment for both UKA and TKA.
  • Conventional solid implants significantly reduced bone stress (by 10x) and caused substantial underloading (>70% of bone surface).

Conclusions:

  • Titanium lattice implants maintain natural tibial loading post-arthroplasty, unlike conventional solid implants.
  • This represents a promising advancement for preserving bone health, though further evaluation of fatigue and micromotion is necessary for clinical application.