In vivo kinematics of the talocrural and subtalar joints during weightbearing ankle rotation in chronic ankle instability
| Autor: | Makoto Suzukawa, Takumi Kobayashi, Masayuki Saka, Atsushi Akaike, Kazuyoshi Gamada, Eiichi Suzuki, Naohito Yamazaki, Kuniaki Shimizu |
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| Rok vydání: | 2013 |
| Předmět: |
Joint Instability
Male Rotation education Kinematics Models Biological Tarsal Joints Weight-Bearing Young Adult Imaging Three-Dimensional Subtalar joint medicine Humans Orthopedics and Sports Medicine Computer Simulation Podiatry Fluoroscopic imaging Orthodontics business.industry Level iv In vivo kinematics Biomechanical Phenomena medicine.anatomical_structure Fluoroscopy Chronic ankle instability Chronic Disease Surgery Ankle business Tomography X-Ray Computed Ankle Joint |
| Zdroj: | Footankle specialist. 7(1) |
| ISSN: | 1938-7636 |
| Popis: | Background. Chronic ankle instability (CAI) results in abnormal ankle kinematics, but there exists limited quantitative data characterizing these alterations. This study was undertaken to investigate kinematic alterations of the talocrural and subtalar joints in CAI. Methods. A total of 14 male patients with unilateral CAI (mean age = 21.1 ± 2.5 years) were enrolled. Computed tomography and fluoroscopic imaging of both lower extremities during weightbearing passive ankle joint complex (AJC) rotation were obtained. Three-dimensional bone models created from the computed tomography images were matched with the fluoroscopic images to compute the 6 degrees-of-freedom talocrural, subtalar, and AJC kinematics. Results. In 20° plantarflexion, ankles with CAI demonstrated significantly increased anterior translation of the talocrural joint during AJC internal rotation from 5° to 7° and significantly decreased talocrural internal rotation within an AJC arc of motion from −1° to 5°. CAI joints demonstrated significantly increased internal rotation of the subtalar joint within an AJC arc of motion from −1° to 3°. Discussion. In CAI, altered subtalar internal rotation occurs with increased talocrural anterior translation and reduced talocrural internal rotation during weightbearing ankle internal rotation in plantarflexion. These results suggest that altered subtalar mechanics may contribute to CAI symptoms. Levels of Evidence: Diagnostic, Level IV, Cross-sectional |
| Databáze: | OpenAIRE |
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