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Related Concept Videos

Bones of the Lower Limb: Femur and Patella01:16

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...

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Related Experiment Video

Updated: May 9, 2026

Orthopedic Robot-Assisted Femoral Neck System in the Treatment of Femoral Neck Fracture
05:42

Orthopedic Robot-Assisted Femoral Neck System in the Treatment of Femoral Neck Fracture

Published on: March 3, 2023

Modular neck femoral stems.

H Krishnan1, S P Krishnan, G Blunn

  • 1Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, UK. hk502@ic.ac.uk

The Bone & Joint Journal
|August 3, 2013
PubMed
Summary
This summary is machine-generated.

Modular neck hip stems require further research following their 2012 recall. This review summarizes evidence on femoral modularity, its outcomes, and potential complications for future clinical use and patient monitoring.

Keywords:
Double-taperExchangeableHipModularNeck

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Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Clinical evidence synthesis

Background:

  • The recall of modular neck hip stems in July 2012 has spurred increased research into femoral modularity.
  • Understanding the clinical implications of modularity in hip implants is crucial for patient outcomes.

Purpose of the Study:

  • To provide an up-to-date summary of clinically relevant evidence regarding femoral modularity.
  • To explore the development, theoretical rationale, and clinical outcomes of femoral modularity.
  • To examine reported problems associated with modular neck femoral stems.

Main Methods:

  • Literature review synthesizing clinically relevant evidence.
  • Analysis of data from joint replacement registries (UK and Australia) on failure rates.
  • Examination of theoretical principles and reported clinical outcomes.

Main Results:

  • Femoral modularity has evolved, with classification systems developed.
  • Theoretical benefits of modularity exist, but clinical outcomes require careful consideration.
  • Registries provide failure rate data but lack mechanistic insights into device failure.

Conclusions:

  • Further investigation into the mechanisms of failure for modular neck hip stems is necessary.
  • This evidence is critical for determining the future use of modular neck femoral stems.
  • Guidelines for monitoring patients with existing modular neck implants need to be established.