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January 1, 1993Acta Orthopaedica ScandinavicaOpen Access

Laxity after cruciate ligament injury in 94 knees: The KT-1000 arthrometer versus roentgen stereophotogrammetry

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Authors

HJHåkan JönssonUmeå UniversityJKJohan KärrholmThe Swedish Hip Arthroplasty RegisterLELars-Gunnar ElmqvistUniversity Hospital of Umeå

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Implication

Comparative study reveals KT-1000 arthrometers record lower knee translation than roentgen stereophotogrammetry in chronic ACL injuries, suggesting standard tools may overrate surgical stability.

Key Points

  • To compare the measurement of knee joint laxity between the KT-1000 arthrometer and roentgen stereophotogrammetry in knees with chronic anterior cruciate ligament injury.
  • Evaluated 94 knees with chronic anterior cruciate ligament injuries, of which 55 had undergone surgical ligament reconstruction.
  • Measured knee laxity using the KT-1000 arthrometer under an 89 N anterior force and roentgen stereophotogrammetry (RSA) under 150 N anterior and 80 N posterior forces.
  • Tibial displacement in intact knees did not differ between the KT-1000 arthrometer and roentgen stereophotogrammetry.
  • In injured knees, both non-operated and reconstructed, the KT-1000 recorded smaller anteroposterior translations and side-to-side differences than roentgen stereophotogrammetry.

Cite This Study

Jönsson et al. (1993) studied this question.

synapsesocial.com/papers/6a75fcb2c14fe0c475707da0https://doi.org/10.3109/17453679308993694
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Genucom, KT-1000, and Stryker knee laxity measuring device comparisons1989 · 93 citations
  2. 2Anteroposterior Drawer Measurements in the Knee Using an Instrumented Test Device1989 · 40 citations
  3. 3Comparison of clinical tests and the KT1000 in the diagnosis of anterior cruciate ligament rupture.1991 · 55 citations
  4. 4Repeatability of the KT-1000 arthrometer in a normal population1990 · 219 citations
  5. 5Stiffness and laxity of the knee--the contributions of the supporting structures. A quantitative in vitro study1976 · 844 citations