- 【Updated on May 12, 2025】 Integration of CiNii Dissertations and CiNii Books into CiNii Research
- Trial version of CiNii Research Knowledge Graph Search feature is available on CiNii Labs
- 【Updated on June 30, 2025】Suspension and deletion of data provided by Nikkei BP
- Regarding the recording of “Research Data” and “Evidence Data”
Evaluation of Hamstring Strength and Tendon Regrowth after Harvesting for Anterior Cruciate Ligament Reconstruction
-
- Kou Tadokoro
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
-
- Nobuzo Matsui
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
-
- Masayoshi Yagi
- Department of Orthopaedic Surgery, Shin-Suma Hospital, Kobe, Japan
-
- Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
-
- Masahiro Kurosaka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
-
- Shinichi Yoshiya
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
Search this article
Description
<jats:sec><jats:title>Background</jats:title><jats:p> It is generally thought that tissue regeneration and good functional recovery can be expected after anterior cruciate ligament reconstruction using the hamstring tendons. However, persistent strength deficit in deep knee flexion has also been reported. </jats:p></jats:sec><jats:sec><jats:title>Hypothesis</jats:title><jats:p> Morphologic regeneration of the harvested hamstring tendon is not necessarily associated with its functional recovery. </jats:p></jats:sec><jats:sec><jats:title>Study Design</jats:title><jats:p> Retrospective follow-up study. </jats:p></jats:sec><jats:sec><jats:title>Method</jats:title><jats:p> Twenty-eight patients who underwent anterior cruciate ligament reconstruction with hamstring graft were evaluated after a minimum period of 2 years. Status of tendon regrowth was assessed by magnetic resonance imaging. To specifically analyze the functional deficit after graft harvest, the isometric hamstring strength was examined in a sitting position at 90° of flexion and a prone position at 90° and 110° of flexion. Then, the strength data were correlated with the extent of tendon regeneration. </jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p> In 22 of the 28 patients, a regrowth of the semitendinosus tendon was found, whereas regeneration of the gracilis tendon was observed in 13 patients. In the evaluation of hamstring strength, the isometric peak torque was reduced to 86.2%, 54.6%, and 49.1%, respectively, in the aforementioned 3 postures as compared with the contralateral side. </jats:p></jats:sec><jats:sec><jats:title>Conclusions</jats:title><jats:p> Significant functional deficit of hamstring strength remains regardless of morphologic regeneration. </jats:p></jats:sec>
Journal
-
- The American Journal of Sports Medicine
-
The American Journal of Sports Medicine 32 (7), 1644-1650, 2004-10
SAGE Publications