التفاصيل البيبلوغرافية
| العنوان: |
Towards an Understanding of Prolonged Pronation: Implications for Medial Tibial Stress Syndrome and Achilles Tendinopathy |
| المؤلفون: |
Becker, James N. M., 1979- |
| المساهمون: |
Chou, Li-Shan |
| بيانات النشر: |
University of Oregon |
| سنة النشر: |
2013 |
| المجموعة: |
University of Oregon Scholars' Bank |
| مصطلحات موضوعية: |
Achilles Tendinopathy, Medial Tibial Stress Syndrome, Pronation, Running Injuries |
| الوصف: |
Epidemiologic data suggest 25% to 75% of all runners experience an overuse injury each year. Commonly cited biomechanical factors related to overuse injuries such as Achilles tendinopathy or medial tibial stress syndrome include excessive amounts or velocities of foot pronation. However, there is conflicting evidence in the literature supporting this theory. An alternative hypothesis suggests it is not necessarily the amount or velocity of pronation which is important for injury development; rather it is the duration the foot remains in a pronated position throughout stance that is the important variable. This project examined this hypothesis by first identifying biomechanical markers of prolonged pronation. Second, it assessed whether individuals currently symptomatic with injuries typically attributed to excessive pronation instead demonstrate the biomechanical markers of prolonged pronation. Finally, musculoskeletal modeling techniques were used to examine musculotendinous kinematics in injured and healthy runners, as well as healthy runners with prolonged pronation. The results suggest the two most robust measures for identifying individuals with prolonged pronation are the period of pronation and the eversion of the rear foot at heel off. Individuals with prolonged pronation can also be identified with a set of clinically feasible measures including higher standing tibia varus angles, reduced static hip internal rotation range of motion, and increased hip internal rotation during stance phase. Finally, individuals with prolonged pronation display a more medially located center of pressure trajectory during stance. Compared to healthy controls, individuals currently symptomatic with Achilles tendinopathy or medial tibial stress syndrome did not differ in the amount or velocity of pronation. However, they did demonstrate the biomechanical markers of prolonged pronation. Injured individuals also demonstrated greater average musculotendinous percent elongation than healthy controls, especially through mid and ... |
| نوع الوثيقة: |
thesis |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
http://hdl.handle.net/1794/13257Test |
| الإتاحة: |
http://hdl.handle.net/1794/13257Test |
| حقوق: |
All Rights Reserved. |
| رقم الانضمام: |
edsbas.2E27B10B |
| قاعدة البيانات: |
BASE |
