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Related Concept Videos

Knee Joint01:23

Knee Joint

2.3K
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...
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Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

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

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Reply to the Letter to the Editor: High Risk of Venous Thromboembolism With Aspirin Prophylaxis After THA for High-riding Developmental Dysplasia of the Hip: A Retrospective, Comparative Study.

Clinical orthopaedics and related research·2026
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A Promising Step Toward Molecular Diagnosis of PJI: Are We There Yet?: Commentary on an article by Bernhard J.H. Frank, MD, et al.: "Synovial Fluid MicroRNA Biomarkers Enable Accurate Diagnosis of Hip and Knee Periprosthetic Joint Infections".

The Journal of bone and joint surgery. American volume·2025
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2025 ICM: One-Stage Exchange.

The Journal of arthroplasty·2025
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2025 ICM: Diagnostic Techniques: Histology.

The Journal of arthroplasty·2025
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Retraction Note: Emerging role of mesenchymal stem/stromal cells (MSCs) and MSCs-derived exosomes in bone- and joint-associated musculoskeletal disorders: a new frontier.

European journal of medical research·2025
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High Risk of Venous Thromboembolism With Aspirin Prophylaxis After THA for High-riding Developmental Dysplasia of the Hip: A Retrospective, Comparative Study.

Clinical orthopaedics and related research·2025

Related Experiment Video

Updated: Sep 13, 2025

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
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The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

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Dual Mobility Acetabular Cup Utilization in Total Hip Arthroplasty: Mitigating Instability Risks.

Javad Khaje Mozafari1,2, Amir Aminian1, Ali Yeganeh1,3

  • 1Bone and Joint Reconstruction Research Center, Department of Orthopedics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.

Medical Journal of the Islamic Republic of Iran
|August 1, 2025
PubMed
Summary

Dual mobility cups (DMC) significantly reduce dislocation in high-risk total hip arthroplasty (THA) patients. This study found no dislocations requiring revision, demonstrating DMC

Keywords:
Dual Mobility CupOsteonecrosisRisk factor of DislocationTotal Hip Arthroplastyfemur neck fracture

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

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Engineering
  • Clinical Outcomes Research

Background:

  • Total hip arthroplasty (THA) complications, including dislocation, are rising with increased life expectancy and procedure rates.
  • Dislocation is the primary cause of revision surgery within the first year post-THA.
  • High-risk patients require specialized implants to mitigate instability.

Purpose of the Study:

  • To evaluate the efficacy of dual mobility cups (DMC) in reducing hip instability in high-risk THA patients.
  • To assess complication rates and functional outcomes associated with DMC implantation in a challenging patient cohort.
  • To compare DMC performance against standard implants in preventing dislocation.

Main Methods:

  • Retrospective review of 163 patients (168 hips) undergoing THA with DMC from 2014-2021.
  • DMC implantation in patients with neuromuscular diseases or femoral neck fractures (FNF).
  • Analysis of clinical outcomes, instability, and complications using SPSS, with chi-squared and t-tests for statistical comparison.

Main Results:

  • Mean follow-up of 48 months in 163 patients (mean age 58 years).
  • No dislocations requiring revision occurred; one case of intraprosthetic dislocation without metal head dislocation was revised.
  • Significant improvement in Harris Hip Score (HHS) from 49 preoperatively to 89 postoperatively at four years.

Conclusions:

  • Dual mobility cups (DMC) effectively reduce dislocation rates in high-risk THA patients, including those with FNF.
  • DMC implantation leads to improved patient satisfaction and near-normal functional restoration.
  • Greater consideration of DMC is recommended for patients identified as at high risk for dislocation.