J Knee Surg 2021; 34(06): 659-664
DOI: 10.1055/s-0039-1700809
Original Article

Chronological Changes in Anterior Knee Stability after Anatomical Anterior Cruciate Ligament Reconstruction Using Bone–Patellar Tendon–Bone and Hamstring Grafts

Autoren

  • Kohei Kawaguchi

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Shuji Taketomi

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Hiroshi Inui

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Ryota Yamagami

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Keiu Nakazato

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Kentaro Takagi

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Tomofumi Kage

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Manabu Kawata

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan
  • Sakae Tanaka

    1   Department of Orthopaedics, Tokyo University Hospital, Tokyo, Japan

Abstract

The clinical outcomes of anterior cruciate ligament (ACL) reconstruction are typically evaluated at specific time points only. This study aimed to characterize the chronological changes in anterior knee stability after anatomical ACL reconstruction and to compare the anterior knee stability achieved with bone–patellar tendon–bone (BPTB) and hamstring tendon (HT) grafts. A total of 59 patients underwent anatomical rectangular tunnel ACL reconstruction using the BPTB graft and 23 patients underwent anatomical double-bundle ACL reconstruction using the HT graft. Anterior knee stability was quantitatively assessed using the KneeLax 3 arthrometer at 6 months, 1 year, and 2 years after surgery using side-to-side differences. The values for anterior knee stability using the BPTB graft were 0.3 mm after 6 months, 0.2 mm after 1 year, and 0.2 mm after 2 years, and no significant differences were observed during the postoperative study period. Meanwhile, the values for anterior knee stability using the HT graft were −0.3 mm after 6 months, 0.5 mm after 1 year, and 1.2 mm after 2 years, and anterior knee stability decreased chronologically from 6 months up to 2 years. Regarding anterior stability, the HT graft showed significant laxity compared with the BPTB graft only after 2 years. No chronological changes in anterior stability were observed from 6 months up to 2 years after ACL reconstruction using the BPTB graft, whereas anterior laxity developed during the same period after ACL reconstruction using the HT graft. This is a Level IV, therapeutic case series study.

Note

The Institutional Review Board of the Tokyo University Hospital approved this retrospective study.




Publikationsverlauf

Eingereicht: 16. Februar 2019

Angenommen: 18. September 2019

Artikel online veröffentlicht:
06. November 2019

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