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

Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

8.2K
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...
8.2K
Fractures: Bone Repair01:27

Fractures: Bone Repair

5.8K
Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
5.8K
Normal Strain under Axial Loading01:20

Normal Strain under Axial Loading

1.6K
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
1.6K
Fatigue01:21

Fatigue

1.1K
Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
1.1K

You might also read

Related Articles

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

Sort by
Same author

Time Series Analysis of Posttraumatic Stress Disorder in Military Veterans: A Literature Review and Pilot Study.

Neuropsychiatric disease and treatment·2025
Same author

Urinary Incontinence and Quality of Life: A Cross-Sectional Study.

OTJR : occupation, participation and health·2024
Same author

Conversations About Obesity and Weight: Good News We Can Use.

Annals of internal medicine·2023
Same author

Physician Assistant Students' Perception of Online Didactic Education: A Cross-Sectional Study.

Cureus·2023
Same author

Experiential Learning in Patient Safety: A Multi-Center Study Examining Emergency Medicine Residents' Situational Awareness of Hazards via Simulation.

Cureus·2022
Same author

Management and treatment of HIV: are primary care clinicians prepared for their new role?

BMC family practice·2020

Related Experiment Video

Updated: May 4, 2026

Imaging of the Microstructural Failure Mechanism in the Human Hip
08:43

Imaging of the Microstructural Failure Mechanism in the Human Hip

Published on: September 29, 2023

1.8K

Femoral neck stress fracture in Air Force basic trainees.

Kevin R Kupferer1, David M Bush2, John E Cornell2

  • 1Air Force Medical Support Agency/SG5I, 7700 Arlington Boulevard, Falls Church, VA 22042-5164.

Military Medicine
|January 10, 2014
PubMed
Summary

Female military trainees with slower run times face higher risks of femoral neck stress fractures (FNSFs). Higher push-up and sit-up performance may reduce FNSF risk in females, highlighting fitness as a key factor.

More Related Videos

Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position
06:58

Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position

Published on: August 17, 2017

9.1K
Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

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

Published on: April 11, 2018

9.6K

Related Experiment Videos

Last Updated: May 4, 2026

Imaging of the Microstructural Failure Mechanism in the Human Hip
08:43

Imaging of the Microstructural Failure Mechanism in the Human Hip

Published on: September 29, 2023

1.8K
Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position
06:58

Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position

Published on: August 17, 2017

9.1K
Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

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

Published on: April 11, 2018

9.6K

Area of Science:

  • Military Medicine
  • Orthopedics
  • Sports Medicine

Background:

  • Stress fractures are a common overuse injury in military trainees, leading to significant morbidity and training delays.
  • Femoral neck stress fractures (FNSFs), though less common, impose a disproportionate burden on healthcare systems and military readiness.

Purpose of the Study:

  • To investigate risk factors associated with femoral neck stress fractures (FNSFs) in U.S. Air Force basic trainees.
  • To present new data on the prevalence and predictors of FNSF in this population.

Main Methods:

  • A matched case-control study design was employed, examining 47 cases of FNSF and 94 controls from Air Force basic trainees (2008-2011).
  • Statistical analyses included t tests and conditional logistic regression to identify significant risk factors.

Main Results:

  • Female gender and slower running times were significantly associated with an increased risk of FNSF.
  • Higher numbers of push-ups and sit-ups demonstrated a reduced risk of FNSF in female trainees.
  • Body mass index and abdominal circumference were not found to be significant risk factors for FNSF.

Conclusions:

  • Initial physical fitness levels and female gender are significant risk factors for developing FNSFs in Air Force basic trainees.
  • Targeted interventions focusing on improving running performance and strength training may help mitigate FNSF risk in female recruits.