Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Bones of the Lower Limb: Femur and Patella

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...

Muscles that Move the Leg

Muscles that Move the Leg

The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed to...

Static and Kinetic Frictional Force

Static and Kinetic Frictional Force

One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...

You might also read

Related Articles

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

Sort by

Same author

Are the Forces and Lower Limb Kinematics Displayed During Running Associated with Medial Tibial Stress Syndrome? A Case-Control and Case Study.

Journal of functional morphology and kinesiology·2026

Same author

Low quality evidence supports surgery for gluteal tendon tears, no non-surgical evidence was identified: a systematic review.

BMC musculoskeletal disorders·2026

Same author

Consensus-based guidelines for intervention protocols targeting the foot spring mechanism during landing: A modified Delphi study.

Journal of science and medicine in sport·2025

Same author

Solo Versus Tandem Cycling Performance: The Whole Is Less Than the Sum of the Parts.

European journal of sport science·2025

Same author

Knee joint moment changes and the relationship to radiological severity and body weight following a structured education and exercise therapy intervention for knee osteoarthritis.

Clinical biomechanics (Bristol, Avon)·2025

Same author

Do fluctuations in oestradiol and progesterone across the menstrual cycle affect mechanical stiffness in female athletes?

Journal of science and medicine in sport·2025

Search research articles

Related Experiment Video

Updated: May 15, 2026

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy

Published on: March 1, 2024

Predicting the patellar tendon force generated when landing from a jump.

Ina Janssen¹, Julie R Steele, Bridget J Munro

¹Biomechanics Research Laboratory, School of Health Sciences, University of Wollongong, Wollongong, Australia.

Medicine and Science in Sports and Exercise

|December 19, 2012

Summary

This summary is machine-generated.

High patellar tendon loading during jumps increases patellar tendinopathy risk. Male volleyball players with strong quadriceps and faster landing movements experience higher loading, suggesting targeted interventions can reduce injury risk.

More Related Videos

A Novel Application of Musculoskeletal Ultrasound Imaging

A Novel Application of Musculoskeletal Ultrasound Imaging

Published on: September 17, 2013

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Related Experiment Videos

Last Updated: May 15, 2026

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy

A Passive Ankle Dorsiflexion Testing System for an In Vivo Model of Overuse-induced Tendinopathy

Published on: March 1, 2024

A Novel Application of Musculoskeletal Ultrasound Imaging

A Novel Application of Musculoskeletal Ultrasound Imaging

Published on: September 17, 2013

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Area of Science:

Sports Medicine
Biomechanics
Injury Prevention

Background:

Patellar tendinopathy is often linked to high patellar tendon loading.
Factors influencing this loading during athletic movements, especially landing, require further investigation.

Purpose of the Study:

To identify predictors of patellar tendon loading during jump landings in volleyball players.
To determine if factors associated with patellar tendinopathy development predict loading.

Main Methods:

Ten highly skilled male, 20 skilled male, and 20 skilled female volleyball players performed lateral stop-jumps.
Collected landing kinematics and kinetics, recording sex, skill, quadriceps strength, and trunk inertia.
Used backward multiple regression to analyze predictors of peak patellar tendon force and loading rate.

Main Results:

Regression models predicted 52% of peak patellar tendon force variance and 70% of loading rate variance.
Higher quadriceps strength, increased ankle dorsiflexion velocity, and trunk flexion velocity predicted greater patellar tendon loading in male players.

Conclusions:

Interventions reducing ankle dorsiflexion and trunk flexion velocities at landing may lower patellar tendon loading.
These strategies could be particularly beneficial for male volleyball players with strong quadriceps.
Reducing patellar tendon loading may decrease the prevalence of patellar tendinopathy in this population.