title: [Tendon overuse syndrome: imaging diagnosis].
abstract: Injuries of muscles and tendons occur commonly during various sporting activities and in most cases the athletes feel such an accident to be sudden and unavoidable. The rupture of a tendon, however, has to be considered in many cases as the final stage of a long-standing progressive degeneration of collagen fibers. This process can be described as "tendon overuse syndrome (TOS)". Diagnostic imaging modalities, especially sonography and MRI, are suitable to detect and analyse the different stages of this syndrome and the degree of morphological abnormalities. The first stage is painful functional derangement, followed by tendovaginitis, peritendinitis, or bursitis. The third stage is tendinosis resulting from biomechanical or ischaemic injury of tendon fibers which may eventually be followed by partial or complete rupture. Regional or individual specifications of these four stages may occur at anatomically predisposing sites, so-called critical zones, or during periods of specific proneness, the vulnerable phases.
authors.affiliation: Universitätsklinik für Radiodiagnostik, Währinger Gürtel 18-20, A-1090 Wien. franz.kainberger@billrothhaus.at
authors.forename: F
authors.initials: F
authors.lastname: Kainberger
authors.forename: N
authors.initials: N
authors.lastname: Ulreich
authors.forename: W
authors.initials: W
authors.lastname: Huber
authors.forename: C
authors.initials: C
authors.lastname: Bernhard
authors.forename: T
authors.initials: T
authors.lastname: Müllner
authors.forename: S
authors.initials: S
authors.lastname: Nehrer
authors.forename: H
authors.initials: H
authors.lastname: Imhof
mesh_terms: D001265:Athletic Injuries / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D012090:Cumulative Trauma Disorders / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D011859:Radiography; D012421:Rupture; D013708:Tendon Injuries / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D013710:Tendons / Q000473:pathology*; D014463:Ultrasonography
vernacular_title: Das "Sehnenüberlastungssyndrom": radiologische Diagnostik.