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    Am J Sports Med. 1991 Jul-Aug;19(4):384-8.

    An experimental evaluation of isometric placement for extraarticular reconstructions of the anterior cruciate ligament.

    Kurosawa H, Yasuda K, Yamakoshi K, Kamiya A, Kaneda K.

    Source

    Research Institute of Applied Electricity, School of Medicine, Hokkaido University, Sapporo, Japan.

    Abstract

    We measured the changes in distance between the tibial and femoral attachment points of the extraarticular ACL substitute during knee motion. To measure the changes in distance continuously and directly, a computer-assisted experimental system was developed using an electrolyte-in-rubber transducer. We used 6 cadaveric knees to measure changes in distance of 15 combinations during a simple flexion and extension knee motion. The distance became longer with flexion in each pair of attachment locations. Although the smallest change in distance was obtained between the posterolateral site of the femoral distal metaphysis and a point posterior to the Gerdy tubercle (percent average of the maximum strain was about 12%), it was concluded that the extraarticular ACL reconstruction is not recommended from a standpoint of isometry of the substitute.

    PMID:
    1897654
    [PubMed - indexed for MEDLINE]

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