title: Histologic analysis of ruptured quadriceps tendons.
abstract: Quadriceps tendon ruptures are uncommon injuries. Degenerative changes in the tendon are felt to be an important precondition for rupture. We retrospectively reviewed 45 quadriceps tendon ruptures in 42 patients. Quadriceps tendon ruptures occurred most often in the sixth and seventh decade of life. Men were affected six times as often as women. A tissue sample from the rupture-zone was obtained in 22 cases and histologic analysis was performed. Degenerative changes were present in only 14 (64%) of the 22 samples. We observed an increasing ratio of degenerative to nondegenerative tendons with increasing patient age. Our data suggests that quadriceps tendon rupture, especially in younger patients, can occur in the absence of pathologic tendon degeneration.
authors: BG-Traumacenter, Eberhard-Karls University Tuebingen, Schnarrenbergstr 95, 72076 Tuebingen, Germany. pertrobisch@gmail.com
authors: Per David
authors: PD
authors: Trobisch
authors: Matthias
authors: M
authors: Bauman
authors: Kuno
authors: K
authors: Weise
authors: Fabian
authors: F
authors: Stuby
authors: David J
authors: DJ
authors: Hak
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006652:Histological Techniques; D006801:Humans; D008297:Male; D008875:Middle Aged; D052097:Quadriceps Muscle / Q000293:injuries* / Q000473:pathology*; D012189:Retrospective Studies; D012422:Rupture, Spontaneous / Q000473:pathology; D017678:Sex Distribution; D013708:Tendon Injuries / Q000473:pathology*; D055815:Young Adult