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 Experiment Videos

Coronal alignment after total knee replacement.

R S Jeffery1, R W Morris, R A Denham

  • 1Department of Orthopaedics, Queen Alexandra Hospital, Portsmouth, Hampshire, England.

The Journal of Bone and Joint Surgery. British Volume
|September 1, 1991
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

The increasing cost of happiness.

SSM - population health·2021
Same author

Optimising image quality and radiation dose for neonatal incubator imaging.

Radiography (London, England : 1995)·2020
Same author

Investigating the importance of the local food environment for fruit and vegetable intake in older men and women in 20 UK towns: a cross-sectional analysis of two national cohorts using novel methods.

The international journal of behavioral nutrition and physical activity·2017
Same author

The effect of oral intake during the immediate pre-colonoscopy time period on volume depletion in patients who receive sodium picosulfate.

Anaesthesia and intensive care·2017
Same author

Reducing falls among older people in general practice: The ProAct65+ exercise intervention trial.

Archives of gerontology and geriatrics·2016
Same author

Does case management for patients with heart failure based in the community reduce unplanned hospital admissions? A systematic review and meta-analysis.

BMJ open·2016
Same journal

Comorbidities in Perthes' disease: a case control study using the General Practice Research database.

The Journal of bone and joint surgery. British volume·2012
Same journal

The treatment of complex tibial shaft fractures by the Ilizarov method.

The Journal of bone and joint surgery. British volume·2012
Same journal

Posterior spinal arthrodesis for adolescent idiopathic scoliosis using pedicle screw instrumentation: does a bilateral or unilateral screw technique affect surgical outcome?

The Journal of bone and joint surgery. British volume·2012
Same journal

Anterior deltoid deficiency in reverse total shoulder replacement: a biomechanical study with cadavers.

The Journal of bone and joint surgery. British volume·2012
Same journal

Long-term results of dorsal intercarpal ligament capsulodesis for the treatment of chronic scapholunate instability.

The Journal of bone and joint surgery. British volume·2012
Same journal

Medial patellofemoral ligament reconstruction for patellar instability in patients with hypermobility: a case control study.

The Journal of bone and joint surgery. British volume·2012
See all related articles

Accurate coronal alignment measured by Maquet's line is crucial for preventing knee replacement loosening. Proper alignment significantly reduces the risk of implant loosening compared to malalignment.

Area of Science:

  • Orthopedic surgery
  • Biomechanical analysis
  • Radiographic imaging

Background:

  • Knee replacement (total knee arthroplasty) is a common procedure to alleviate pain and restore function.
  • Implant loosening is a significant complication following knee replacement, often linked to abnormal biomechanical forces.
  • Accurate assessment of coronal alignment is essential for long-term implant survival.

Purpose of the Study:

  • To evaluate the accuracy of Maquet's line in measuring coronal alignment after knee replacement.
  • To determine the correlation between coronal alignment and the incidence of implant loosening.
  • To assess the long-term outcomes of early Denham knee replacements based on alignment.

Main Methods:

  • A retrospective review of 115 Denham knee replacements (1976-1981) using early component designs.

Related Experiment Videos

  • Clinical assessment and long-leg standing radiographs taken pre-operatively, post-operatively, and up to 12 years later.
  • Measurement of Maquet's line relative to the femoral prosthesis center on radiographs to assess coronal alignment.

    • Main Results:

    • 68% of knees achieved optimal coronal alignment with Maquet's line through the prosthesis middle third, showing a 3% loosening rate.
    • Malalignment (Maquet's line medial or lateral to the middle third) resulted in a significantly higher loosening incidence of 24% at 8 years (p=0.001).
    • Accurate coronal alignment demonstrated a strong association with reduced rates of knee replacement loosening.

    Conclusions:

    • Precise coronal alignment, as measured by Maquet's line, is a critical factor in preventing knee replacement loosening.
    • The study highlights the importance of accurate radiographic measurement techniques for optimal surgical outcomes.
    • Improving alignment accuracy during knee replacement surgery can enhance implant longevity and patient outcomes.