Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Knee Joint01:23

Knee Joint

3.8K
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...
3.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Does the Use of Robotics Increase the Rate of Complications After Total Hip, Total Knee, or Unicondylar Knee Arthroplasty?

The Journal of arthroplasty·2024
Same author

Steroids Significantly Decrease Postoperative Postural Hypotension in Total Knee Replacement.

The journal of knee surgery·2021
Same author

On-Table and Short-Term Mortality: A Single-Institution Experience With Cementing All Hip Arthroplasties for Neck of Femur Fractures.

The Journal of arthroplasty·2019
Same author

Hip hemiarthroplasty for femoral neck fractures in end-stage renal disease patients on dialysis compared to patients with late-stage chronic kidney disease.

Singapore medical journal·2019
Same author

The Outcome of Total Knee Arthroplasty With and Without Patellar Resurfacing up to 17 Years: A Report From the Australian Orthopaedic Association National Joint Replacement Registry.

The Journal of arthroplasty·2019
Same author

Gap formation after single lateral row versus dual-row suture bridge cuff repair: An ovine biomechanical model.

Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association·2019
Same journal

Unicondylar Knee Arthroplasty in the U.S. Patient Population: Prevalence and Epidemiology.

American journal of orthopedics (Belle Mead, N.J.)·2019
Same journal

Trends in Utilization of Total Hip Arthroplasty for Femoral Neck Fractures in the United States.

American journal of orthopedics (Belle Mead, N.J.)·2019
Same journal

The Characteristics of Surgeons Performing Total Shoulder Arthroplasty: Volume Consistency, Training, and Specialization.

American journal of orthopedics (Belle Mead, N.J.)·2019
Same journal

Review of Common Clinical Conditions of the Proximal Tibiofibular Joint.

American journal of orthopedics (Belle Mead, N.J.)·2019
Same journal

Return to Play After an Anterior Cruciate Ligament Injury: Prioritizing Neurological and Psychological Factors of the Decision-Making Algorithm.

American journal of orthopedics (Belle Mead, N.J.)·2019
Same journal

Preoperative Corticosteroid Use for Medical Conditions is Associated with Increased Postoperative Infectious Complications and Readmissions After Total Hip Arthroplasty: A Propensity-Matched Study.

American journal of orthopedics (Belle Mead, N.J.)·2019
See all related articles

Related Experiment Video

Updated: Apr 11, 2026

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
08:15

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

1.6K

Alignment Analyses in the Varus Osteoarthritic Knee Using Computer Navigation.

Kelvin G Tan1, Sathappan S Sathappan, Yee Hong Teo

  • 1Department of Orthopedic Surgery, Tan Tock Seng Hospital, Singapore. kkeellvviinn@hotmail.com.

American Journal of Orthopedics (Belle Mead, N.J.)
|June 6, 2015
PubMed
Summary
This summary is machine-generated.

Severe knee osteoarthritis (OA) with significant extension varus deformity often indicates more severe flexion varus. However, fixed flexion deformity (FFD) in the sagittal plane does not correlate with coronal plane varus in OA knees.

More Related Videos

Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head
06:17

Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head

Published on: April 12, 2022

4.4K
In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
07:43

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

3.7K

Related Experiment Videos

Last Updated: Apr 11, 2026

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
08:15

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

1.6K
Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head
06:17

Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head

Published on: April 12, 2022

4.4K
In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
07:43

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

3.7K

Area of Science:

  • Orthopedics
  • Biomedical Engineering
  • Knee Surgery

Background:

  • Osteoarthritis (OA) commonly causes knee deformities, particularly varus alignment.
  • Accurate measurement of knee deformities in both flexion and extension is crucial for surgical planning.
  • Computer navigation has enabled precise measurement of knee alignment, including previously difficult metrics like flexion varus and fixed flexion deformity (FFD).

Purpose of the Study:

  • To investigate the relationship between extension varus and flexion varus in osteoarthritic knees.
  • To determine if the severity of fixed flexion deformity (FFD) in the sagittal plane correlates with the severity of coronal plane varus deformity.
  • To evaluate the utility of computer navigation in assessing knee deformities during total knee arthroplasty.

Main Methods:

  • A retrospective study of 317 consecutive computer-navigated total knee arthroplasties (TKAs) for OA knees with varus deformities.
  • Extraction of varus angles at maximal extension and 90° flexion from navigation data.
  • Correlation analyses were performed between extension varus, flexion varus, FFD, and coronal plane deformity.

Main Results:

  • A strong positive correlation was observed between extension varus and flexion varus in OA knees.
  • An extension varus angle exceeding 10° increased the likelihood of severe flexion varus.
  • When extension varus surpassed 20°, severe flexion varus became nearly certain.
  • No significant correlation was found between the severity of fixed flexion deformity (FFD) and coronal plane varus deformity.

Conclusions:

  • Severe extension varus in osteoarthritic knees is a reliable indicator of significant flexion varus.
  • Computer navigation provides valuable data for understanding complex knee deformities.
  • Fixed flexion deformity (FFD) is an independent factor and does not correlate with the degree of coronal plane varus in these patients.