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Instrumented Static Laxity Evaluation

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Controversies in the Technical Aspects of ACL Reconstruction

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Abstract

Knee laxity is a highly complex issue, depending on an individual’s soft tissue quality and bony configuration. It can be evaluated both in a single and in multiple directions or statically and dynamically. Knee laxity is difficult to assess clinically, because it is highly dependent on the examiner’s experience, which in addition does not allow a precise quantification of knee laxity. Therefore, several devices have been developed to measure static knee laxity. In the early stages, they were limited to measurements in the sagittal plane. Over the last decade, static rotational laxity measurement devices have been added and are currently under development. Despite the fact that instrumented laxity assessments have been performed over several decades, limited knowledge is available on multidirectional static laxity assessments in large populations. Laxity evaluations in large groups followed over time could allow (1) for the study of physiological laxity and risk factors for knee injuries, (2) to confirm the diagnosis of soft tissue injuries, (3) to help distinguish between the different subtypes of anterior cruciate ligament (ACL) tears as well as associated injuries and (4) to follow patients who have had ACL reconstruction. This chapter will provide an overview of currently existing laxity devices and new findings on static knee laxity evaluations. Despite recent advances, there is still much work to be done to improve the use of arthrometers in the daily clinical practice.

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Authors and Affiliations

  1. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg City, Luxembourg

    Romain Seil MD, PhD, Daniel Theisen PT, PhD & Caroline Mouton PhD

  2. Sports Clinic, Centre Hospitalier de Luxembourg – Clinique d’Eich, Luxembourg City, Luxembourg

    Romain Seil MD, PhD

  3. Orthopedic Department, North Mayenne Hospital, Mayenne, France

    Henri Robert MD

Authors
  1. Romain Seil MD, PhD
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  2. Henri Robert MD
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  3. Daniel Theisen PT, PhD
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  4. Caroline Mouton PhD
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Corresponding author

Correspondence to Romain Seil MD, PhD .

Editor information

Editors and Affiliations

  1. Institute for Medical Science in Sports, Osaka Health Science University, Osaka, Japan

    Norimasa Nakamura

  2. Istituto Ortopedico Rizzoli, University of Bologna, Bologna, Italy

    Stefano Zaffagnini

  3. Hospital for Special Surgery, New York, New York, USA

    Robert G. Marx

  4. UPMC Center for Sports Medicine, Pittsburgh, Pennsylvania, USA

    Volker Musahl

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Seil, R., Robert, H., Theisen, D., Mouton, C. (2017). Instrumented Static Laxity Evaluation. In: Nakamura, N., Zaffagnini, S., Marx, R., Musahl, V. (eds) Controversies in the Technical Aspects of ACL Reconstruction. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-52742-9_38

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  • DOI: https://doi.org/10.1007/978-3-662-52742-9_38

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