Mechanisms of proximal hamstring rupture in a non-athlete healthy middle-aged female
| Autor: | Ernest Knöckl, Dorothee Watz, Sebastian Cotofana, Hans-Joachim Mahn, Werner Wambach, Monika Zangl, Selim Lehrer, Harald Modlmayr, Bernhard Tillman, Thomas Pufe |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
medicine.medical_specialty
Ecchymosis Neovascularization Physiologic Physical examination Biceps Tendon Injuries Biopsy Image Processing Computer-Assisted medicine Humans Eccentric Muscle Skeletal Semitendinosus muscle Rupture medicine.diagnostic_test business.industry General Medicine Fibroblasts Middle Aged Immunohistochemistry Magnetic Resonance Imaging Ischial tuberosity Surgery Treatment Outcome medicine.anatomical_structure Conjoint tendon Female Anatomy business Hamstring Developmental Biology |
| Zdroj: | Annals of Anatomy - Anatomischer Anzeiger. 194:489-493 |
| ISSN: | 0940-9602 |
| DOI: | 10.1016/j.aanat.2012.02.016 |
| Popis: | Summary Purpose To present an explicatory pathophysiological model for the rare clinical case of a total proximal hamstring rupture for the first time in the literature. Methods A non-athletic healthy female (49 years) experienced a complete rupture of the right conjoint tendon of the biceps femoris (long head) and semitendinosus muscle while slipping down a lawn-covered slope (eccentric hip flexion and knee extension during stance phase of gait after heel-strike). A hamstring rupture was diagnosed by clinical examination and confirmed by magnet resonance imaging (MRI). Surgical reattachment of the conjoint tendon to the ischial tuberosity was performed. One year after surgery, she experienced no pain or functional impairment. Results Histological analysis and immune-histochemical staining (vascular endothelial growth factor – receptor 2) of a biopsy taken intra-operatively revealed signs of fibroblast proliferation and vasculoneogenesis with absence of inflammatory changes indicating that repairing mechanisms and tissue remodeling had been taking place. Conclusion This case report provides evidence for the hypothesis that micro-injuries induce repairing mechanisms and thus tissue remodeling which leads to consecutive tissue weakening and mechanical failure during a non-adequate trauma. Micro-injuries can occur during leisure activities and remain clinically invisible until rupture. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect