Related Experiment Video

Updated: Feb 14, 2026

Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats
09:31

Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats

Published on: March 30, 2018

11.7K

Patellar Tendon Reconstruction with Allograft in an Ultra-Low-Velocity Multiligamentous Knee Injury: A Case Report

Jessica Nelson1, Megan Tatusko, Eric Panther

  • 1Department of Orthopaedic Surgery, University of Arizona, Tucson, Arizona.

JBJS Case Connector
|February 12, 2026
PubMed
Abstract

Keywords:
extensor mechanisim reconstructionmultiligamentous knee injuryobesity-related knee injurypatellar tendon allograftsegmental patellar tendon defect

More Related Videos

Murine Flexor Tendon Injury and Repair Surgery07:32

Murine Flexor Tendon Injury and Repair Surgery

Published on: September 19, 2016

13.7K
Author Spotlight: Investigating the Mechanism of Action of Acupotomy in Treating Knee Osteoarthritis08:40

Author Spotlight: Investigating the Mechanism of Action of Acupotomy in Treating Knee Osteoarthritis

Published on: October 20, 2023

1.8K

Related Concept Videos

Knee Joint01:23

Knee Joint

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...
3.3K
Average Velocity01:12

Average Velocity

To calculate the other physical quantities in kinematics, we must introduce the time variable. The time variable allows us not only to state the position of the object during its motion, but also how fast it is moving. The speed at which an object is moving is given by the rate at which the position changes with time. For each position xi, we assign a particular time ti. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity. This...
24.3K
Instantaneous Velocity - II01:10

Instantaneous Velocity - II

Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity of an object is the limit of the average velocity as the elapsed time approaches zero, or the derivative of displacement with respect to time. Like average velocity, the instantaneous velocity is a vector with the dimensions of length per unit time. Instantaneous velocity can have both positive and negative values. The instantaneous velocity can be...
13.5K
Escape Velocity01:26

Escape Velocity

The escape velocity of an object is defined as the minimum initial velocity that it requires to escape the surface of another object to which it is gravitationally bound and never to return. For example, what would be the minimum velocity at which a satellite should be launched from the Earth's surface such that it just escapes the Earth's gravitational field?
To calculate the escape velocity, it is assumed that no energy is lost to any frictional forces. In practice, a satellite...
8.5K
Velocity of an Object01:18

Velocity of an Object

Understanding how an object moves along a path requires distinguishing between motion over a time span and motion at a precise moment. A useful example is a vehicle traveling along a straight and level path, where its position at any given time is known. The initial step in analyzing this motion is to measure how far the vehicle travels over a fixed time period. This measurement, called average velocity, is computed by dividing the total change in position by the duration over which the change...
208
Velocity Potential01:20

Velocity Potential

In steady, incompressible flow through a long, straight pipe with a uniform cross-section, the flow in the central region (far from the pipe walls) is irrotational. This irrotational nature means that fluid particles do not rotate around their axes, and a scalar function called the velocity potential, represented by ϕ, can be used to describe their movement. In irrotational flows, the velocity field V is defined as the gradient of the velocity potential:
754