title: [Muscle incoordination phenomena after surgical management of proximal rupture of the biceps tendon].
abstract: A significant atrophy of the biceps brachii muscle without decreasing maximal force during flexion in the elbow joint was shown at least 1.5 years after surgical refixation in 6 patients with a tendon-rupture of the long head of the right biceps. A decreased myoelectrical activity was found in the caput longum region of the muscle. The decrease correlates with an increase of spectral myoelectrical power in the region of caput breve or brachioradialis muscle. In addition compensatory recruitment processes can be supposed because of changed spectral myoelectrical power in the low-frequency bands. Changes of the morphological structure of the muscle were only found in 1 patient by sonography.
authors.affiliation: Abteilung Unfallchirurgie, Chirurgische Universitätsklinik Jena.
authors.forename: I
authors.initials: I
authors.lastname: Schmidt
authors.forename: C
authors.initials: C
authors.lastname: Anders
authors.forename: E
authors.initials: E
authors.lastname: Markgraft
authors.forename: H C
authors.initials: HC
authors.lastname: Scholle
authors.forename: T
authors.initials: T
authors.lastname: Dönicke
authors.forename: R
authors.initials: R
authors.lastname: Friedel
mesh_terms: D001134:Arm Injuries / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D001696:Biomechanical Phenomena; D004576:Electromyography; D005583:Fourier Analysis; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D009046:Motor Neurons / Q000502:physiology; D009133:Muscular Atrophy / Q000000981:diagnostic imaging / Q000503:physiopathology*; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D012421:Rupture; D012815:Signal Processing, Computer-Assisted; D013708:Tendon Injuries / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D014463:Ultrasonography