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Objective knee evaluation using the Genucom Knee Analysis System. Clinical implications.

J H Oliver1, L P Coughlin

  • 1Department of Orthopedic Surgery, Queen Elizabeth Hospital, McGill University, Montreal, Quebec, Canada.

The American Journal of Sports Medicine
|November 1, 1987
PubMed
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The Genucom Knee Analysis System offers detailed knee laxity data, correlating well with clinical exams for anterior-posterior drawer and varus/valgus stress tests. This instrument aids in assessing knee joint stability.

Area of Science:

  • Orthopedics
  • Biomechanics
  • Medical Instrumentation

Background:

  • Knee joint laxity assessment is crucial for diagnosing injuries and evaluating treatment efficacy.
  • Clinical knee examinations can be subjective, necessitating objective measurement tools.
  • The Genucom Knee Analysis System aims to provide quantitative data on knee joint stability.

Purpose of the Study:

  • To evaluate the clinical practicality of the Genucom Knee Analysis System.
  • To determine the correlation between Genucom instrument measurements and clinical knee examinations.
  • To establish normal laxity bands for various knee tests in a healthy population.

Main Methods:

  • The Genucom system was used for a 14-test bilateral examination, taking 25-30 minutes per examiner.

Related Experiment Videos

  • One hundred "normal knees" were tested to generate normative laxity data for males and females.
  • Thirty-eight subjects with one injured knee were assessed using both clinical and Genucom methods for anterior-posterior drawer and varus/valgus stress tests.

    • Main Results:

    • Normal laxity bands were established for seven Genucom tests, with no significant sex-based differences, though males generally showed slightly less laxity.
    • For the 90-degree anterior-posterior (AP) drawer test, instrumented measurements concurred with clinical findings in 10 of 16 cases with <= 5 mm excess laxity.
    • Instrumented tests agreed with clinical assessments in 14 of 15 subjects with > 5 mm excess laxity at 30 degrees AP drawer (Lachman) and varus/valgus stress tests.

    Conclusions:

    • The Genucom Knee Analysis System demonstrates clinical practicality and good correlation with clinical knee examinations.
    • The instrument provides objective, detailed data that complements subjective clinical assessments.
    • Normative data generated can aid in the interpretation of knee laxity measurements in clinical practice.