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Quantitative measurement of muscle atropy after ACL reconstruction

Research Project

Project/Area Number 05671197
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Orthopaedic surgery
Research InstitutionUniversity of Tsukuba

Principal Investigator

FUKUBAYASHI Toru  Tsukuba Univ. Clinical Med., 臨床医学系, 助教授 (70114626)

Co-Investigator(Kenkyū-buntansha) UKAWA Kouji  Tsukuba Univ. Clinical Med., 臨床医学系, 助手 (40213409)
NIITSU Mamoru  Tsukuba Univ. Clinical Med., 臨床医学系, 助手 (50251062)
ANNO Izumi  Tsukuba Univ. Clinical Med., 臨床医学系, 講師 (50138707)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1994: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1993: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsReconstructionfACL / Muscle Atrophy / MRI / Muscle Power / Training / 膝前十字靭帯再建
Research Abstract

(1) Quantitative measurement of the quadriceps atrophy and herniation after the ACL reconstruction using the iliotibial tract were performed with the magnetic resonance image (MRI). 11 competitive level athletes were investigated. From the 15 axial slices of the MRI,muscle volume of all components of qurdriceps femoris and hamstrings were measured. The muscle volume of the vastus medialis showed 8% decrease comparing to the normal side. The spatial position of the quadriceps femoris rotated about 40゚ externaly comparing to the normal side. Though the largest external rotation occured at vastus lateralis, vastus medialis and intermedius also showed certain tendency of the excessive external rotation. At 60 and 180 deg/sec leg extension of the operated side showed 15% and 9% decrease of the peak torque in comparison with the control side.
(2) Quantitative volume measurements of quadriceps femoris and hamstrings after ACL reconstruction were performed with the same MRI technique. 33 competitive or recreational level athletes who underwent ACL reconstruction with semitendinosus and gracilis tendons were investigated more than 1 year after the operatio. The muscle volume of quadriceps femoris and hamstrings showed 5-9% decrease in comparison with the control side. Though the tendinous portions were extirpated, the semitendinosus and gracilis muscles still preserved 60% and 71% of the control side volume, and exhibited muscle contraction at the Tagging Snapshot. There was no regeneration of the extirpated tendons. Slight hypertrophy of semimembranosus and biceps femoris muscle were observed in ha f of the cases. These morphological changes of thigh muscles were slightly related to the peak torque of knee extension and flexion.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] 日置繁: "腸脛靱帯を用いた前十字靱帯再建術後の筋萎縮" 日本整形外科スポーツ医学会誌. 12. 45-48 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 神林徹: "半腱様筋腱と薄筋腱による膝前十字靱帯再建術後の筋体積の変化" 膝. (予定). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Hioki S., Fukubayashi T.: "Muscle atropy after ACL reconstruction using the iliotibial tract." J.J.Orthop. Sports Medicine. 12. 45-48 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Fukubayashi T.: "Muscle volume change after ACL reconstruction using semitendinosus and gracilis tendons." The Knee. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 日置 繁: "腸脛靭帯を用いた前十字靭帯再建術後の筋萎縮" 日本整形外科,スポーツ医学会誌. 12. 45-48 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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