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In vivo laxity of stable versus anterior cruciate liagment-injured knees using a navigation system: a comparative study

  • Knee
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

We compared antero-posterior translation and internal–external rotation of the tibia in stable knees without anterior cruciate ligament (ACL) injury with those of ACL injured knees using a navigation system and suggest an objective data. Forty-four patients treated for a meniscal tear without ACL injury were allocated to stable group, and 41 patients were allocated to ACL injury group. Antero-posterior displacement and rotation of knees were measured in 0, 30, 60 and 90 degrees of flexion using navigation. Mean anterior displacements were 3.6 ± 2.0, 6.7 ± 2.7, 6.0 ± 2.4 and 4.7 ± 1.8 mm at 0, 30, 60 and 90 degrees of flexion, respectively, in stable group, and 6.8 ± 3.6, 14.7 ± 3.5, 11.9 ± 4.6 and 8.5 ± 4.0 mm in ACL injury group. Mean total rotation values were 18.8 ± 4.5°, 31.4 ± 4.2°, 30.1 ± 5.1° and 29.2 ± 5.9° in stable group and 22.7 ± 6.9°, 37.6 ± 5.8°, 34.0 ± 9.4° and 31.8 ± 8.8° in ACL injury group. Quantitative values of antero-posterior translations and rotations of stable and ACL injured knees were obtained using a navigation system. The laxity data may be useful to establish the diagnosis of an ACL injury and evaluation of post-operative results.

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Authors and Affiliations

  1. Department of Orthopedics, Center for Joint Disease, Chonnam National University Hwasun Hospital, Jeonnam, Korea

    Eun Kyoo Song, Jong Keun Seon, Sang Jin Park, Chang Ich Hur & Dam Seon Lee

  2. Department of Orthopaedic Surgery, Chonnam National University Hwasun Hospital, 160 Ilsimri, Hwasun-eup, Hwasun-gun, Jeonnam, 519-809, Korea

    Sang Jin Park

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  1. Eun Kyoo Song
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  2. Jong Keun Seon
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Correspondence to Sang Jin Park.

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Song, E.K., Seon, J.K., Park, S.J. et al. In vivo laxity of stable versus anterior cruciate liagment-injured knees using a navigation system: a comparative study. Knee Surg Sports Traumatol Arthrosc 17, 941–945 (2009). https://doi.org/10.1007/s00167-009-0789-x

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  • DOI: https://doi.org/10.1007/s00167-009-0789-x

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