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...

You might also read

Related Articles

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

Sort by

Same author

Accuracy of femoral head center reconstruction using a straight cementless rectangular stem: An <i>in-silico</i> study comparing elderly and middle-aged patients.

Journal of orthopaedics·2025

Same author

Does Stem Design Affect Primary Stability of Splined Tapered Fluted Stems? A Biomechanical Cadaver Study.

The Journal of arthroplasty·2025

Same author

Patient-Specific Preoperative Plans Can Optimize Femoral Head Coverage and Range of Motion After Periacetabular Osteotomies.

The Journal of arthroplasty·2025

Same author

Global Surgery Without Partnerships Is Not Global Health. WalkStrong: A New Paradigm, a New Partnership With American Association of Hip and Knee Surgeons Global Outreach.

The Journal of arthroplasty·2025

Same author

Contributions of capsular releases to femoral exposure in total hip arthroplasty via the direct anterior approach.

Clinical biomechanics (Bristol, Avon)·2024

Same author

Wearing a Surgical Vest With a Sterile Surgical Helmet System Decreases Contamination of the Surgical Field.

The Journal of arthroplasty·2024

Search research articles

Related Experiment Video

Updated: May 30, 2026

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

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

Published on: July 2, 2021

The cam impinging femur has multiple morphologic abnormalities.

Andrew R Ellis¹, Philip C Noble, Steven J Schroder

¹Baylor College of Medicine, Houston, Texas, USA.

The Journal of Arthroplasty

|August 16, 2011

Summary

Cam-impinging femora exhibit multiple abnormalities, not just a single deformity. Wider necks, larger heads, and posterior head displacement are common, indicating complex issues beyond localized head-neck junction recontouring.

More Related Videos

Imaging of the Microstructural Failure Mechanism in the Human Hip

Imaging of the Microstructural Failure Mechanism in the Human Hip

Published on: September 29, 2023

Surgical Technique of the 3-Dimensional-printed Personalized Hip Implant for the Treatment of Canine Hip Dysplasia

Surgical Technique of the 3-Dimensional-printed Personalized Hip Implant for the Treatment of Canine Hip Dysplasia

Published on: April 19, 2024

Related Experiment Videos

Last Updated: May 30, 2026

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

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

Published on: July 2, 2021

Imaging of the Microstructural Failure Mechanism in the Human Hip

Imaging of the Microstructural Failure Mechanism in the Human Hip

Published on: September 29, 2023

Surgical Technique of the 3-Dimensional-printed Personalized Hip Implant for the Treatment of Canine Hip Dysplasia

Surgical Technique of the 3-Dimensional-printed Personalized Hip Implant for the Treatment of Canine Hip Dysplasia

Published on: April 19, 2024

Area of Science:

Orthopedic surgery
Biomechanical analysis of hip joint abnormalities

Background:

Femoroacetabular impingement (FAI) is a condition characterized by abnormal contact between the femur and acetabulum.
Cam impingement, a type of FAI, involves a bony deformity at the head-neck junction of the femur.

Purpose of the Study:

To determine if cam-impinging femora present with a single deformity or multiple abnormalities at the head-neck junction.
To compare dimensional parameters between normal and cam-impinging femora.

Main Methods:

Comparative analysis of average dimensions including anteversion angle, alpha angle, beta angle, and normalized anterior head offset.
Measurement of posterior head displacement in both normal and cam-impinging groups.

Main Results:

Cam-impinging femora showed significantly wider necks, larger heads, and reduced head-neck ratios compared to normal femora.
No significant differences were observed in neck-shaft angle or anteversion angle between the groups.
Forty-six percent of cam-impinging femora exhibited posterior head displacement exceeding 2mm.

Conclusions:

Cam-impinging femora possess multiple abnormalities, including dimensional changes and posterior head displacement.
Surgical correction focusing solely on localized head-neck recontouring may be insufficient to address the full spectrum of abnormalities in cam impingement.