Changes in the contractile material of human skeletal muscle following tendinous injury

The most marked changes in the human muscle following tendinous injury can be observed in the contractile components. There is a widening of the Z-membrane, dispersion of the sarcomers, a break in their continuity, and detached bundles of myofibrils are found in the sarcoplasm. A change occurs also...

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Bibliographic Details
Published inActa physiologica Academiae Scientiarum Hungaricae Vol. 53; no. 3; p. 299
Main Authors Józsa, L, Bálint, B J, Vándor, E
Format Journal Article
LanguageEnglish
Published Hungary 1979
Subjects
Adenosine Triphosphatases - metabolism
Adult
Aged
Contractile Proteins - metabolism
Female
Humans
L-Lactate Dehydrogenase - metabolism
Male
Middle Aged
Muscles - ultrastructure
Myofibrils - metabolism
Myofibrils - ultrastructure
Rupture
Sarcoplasmic Reticulum - ultrastructure
Succinate Dehydrogenase - metabolism
Tendon Injuries - metabolism
Tendon Injuries - pathology
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Summary:The most marked changes in the human muscle following tendinous injury can be observed in the contractile components. There is a widening of the Z-membrane, dispersion of the sarcomers, a break in their continuity, and detached bundles of myofibrils are found in the sarcoplasm. A change occurs also in the proportion of different fibre types of the muscles, in the muscle with tendinous injury a predominance of type II fibre becoming apparent. Among the proteins of myofibrils a product of disintegration of a molecular weight of 31 000 can be consequently demonstrated, and in some muscles products of disintegration with a molecular weight between 90 000 and 58,000 arise.
ISSN:0001-6756