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

3.1K
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...
3.1K
Kinematic Equations for Rotation01:30

Kinematic Equations for Rotation

769
In mechanics, when one observes a rigid body in rotational motion with constant angular acceleration, it is possible to establish equations for its rotational kinematics. This process resembles how linear kinematics are dealt with in simpler motion studies.
For instance, imagine a point A on a rigid body engaged in circular motion. The translational velocity of this particular point can be calculated by taking the time derivatives of the displacement equation, which essentially measures the...
769
Rotation of Asymmetric Top01:11

Rotation of Asymmetric Top

1.5K
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
1.5K
Rotational Motion about a Fixed Axis01:26

Rotational Motion about a Fixed Axis

1.3K
A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or...
1.3K
Rotation with Constant Angular Acceleration - I01:37

Rotation with Constant Angular Acceleration - I

8.1K
If angular acceleration is constant, then we can simplify equations of rotational kinematics, similar to the equations of linear kinematics. This simplified set of equations can be used to describe many applications in physics and engineering where the angular acceleration of a system is constant.
Using our intuition, we can begin to see how rotational quantities such as angular displacement, angular velocity, angular acceleration, and time are related to one another. For example, if a flywheel...
8.1K
Rotation with Constant Angular Acceleration - II01:16

Rotation with Constant Angular Acceleration - II

7.0K
Kinematics is the description of motion. The kinematics of rotational motion discusses the relationships between rotation angle, angular velocity, angular acceleration, and time. One can describe many things with great precision using kinematics, but kinematics does not consider causes. For example, a large angular acceleration describes a very rapid change in angular velocity without any consideration of its cause. Thus, rotational kinematics does not represent the laws of nature.
The first...
7.0K

You might also read

Related Articles

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

Sort by
Same author

Systematic Analysis of Surgical Management in Traumatic Cervical Spondyloptosis.

Zeitschrift fur Orthopadie und Unfallchirurgie·2026
Same author

[Literature review on kyphoplasty as a treatment for osteoporotic fractures of the spine].

Orthopadie (Heidelberg, Germany)·2025
Same author

The role of heat shock proteins in fracture healing-a narrative review.

European journal of trauma and emergency surgery : official publication of the European Trauma Society·2025
Same author

[Treatment of rotator cuff lesions using autologous conditioned plasma-a systematic review].

Orthopadie (Heidelberg, Germany)·2025
Same author

Significantly increased bone volume in a critical-sized defect model in the rat animal model by transplantation of a stand-alone vascularized periosteal flap.

European journal of trauma and emergency surgery : official publication of the European Trauma Society·2025
Same author

Long term follow-up of a completely metal free total knee endoprosthesis in comparison to an identical metal counterpart.

Scientific reports·2024

Related Experiment Video

Updated: Jan 21, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

43.8K

Rotating Hinge Implants in Knee Arthroplasty.

Alexander Petershofer1, Klemens Trieb2

  • 1Dept. of Orthopaedics, Klinikum Wels-Grieskirchen, Wels, Austria.

Zeitschrift Fur Orthopadie Und Unfallchirurgie
|August 13, 2019
PubMed
Summary
This summary is machine-generated.

Increasing knee replacements mean more revision surgeries. Modern rotating hinge knee prostheses show improved outcomes for primary and revision procedures when used correctly.

More Related Videos

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
07:33

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty

Published on: May 5, 2023

1.0K
Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
10:35

Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction

Published on: December 3, 2017

11.5K

Related Experiment Videos

Last Updated: Jan 21, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

43.8K
In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
07:33

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty

Published on: May 5, 2023

1.0K
Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
10:35

Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction

Published on: December 3, 2017

11.5K

Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Arthroplasty research

Background:

  • Demographic shifts are increasing primary knee arthroplasty demand.
  • This trend necessitates more revision knee arthroplasty procedures.
  • Rotating hinge prostheses represent an advancement over traditional hinge designs.

Purpose of the Study:

  • To evaluate the clinical outcomes of rotating hinge knee prostheses.
  • To assess their efficacy in both primary and revision knee arthroplasty.
  • To address the challenges in interpreting current literature due to limited case numbers and varied indications.

Main Methods:

  • Review of literature on rotating hinge knee prostheses.
  • Analysis of outcomes based on implant design evolution.
  • Comparison of modern rotating hinge implants with historical models.

Main Results:

  • Modern rotating hinge implants demonstrate improved outcomes compared to older models.
  • Literature interpretation is challenging due to small sample sizes and diverse patient indications.
  • Appropriate indication is key for successful outcomes.

Conclusions:

  • Rotating hinge knee prostheses offer good clinical outcomes in primary and revision settings.
  • Careful patient selection and appropriate indication are crucial for maximizing benefits.
  • Further research with larger cohorts may clarify outcomes in specific patient subgroups.