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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yamaguchi, Satoshi Sasho, Takahisa Kato, Hideyuki Kuroyanagi, Yuji Banks, Scott A. |
| Description | Country affiliation: United States Author Affiliation: Yamaguchi S ( Room 330, MAE-A, Gainesville, FL 32611-6250, USA. y-satoshi@mvb.biglobe.ne.jp) |
| Abstract | BACKGROUND: Understanding the effect of weightbearing on subtalar and ankle joint kinematics is critical for the diagnosis and treatment of foot disorders. However, dynamic in vivo kinematics of these joints are not well studied. The purpose of this study was to compare in vivo kinematics during nonweightbearing and weightbearing activities in healthy subjects. METHODS: Seven healthy subjects with a mean age of 32 (range, 23 to 42) years were enrolled. Oblique lateral fluoroscopic images of nonweightbearing and weightbearing dorsiflexion-plantarflexion activities were recorded. Three dimensional subtalar, ankle, and ankle-subtalar joint complex kinematics were determined using 3D-2D model registration techniques with 3D bone models and single-plane fluoroscopy. RESULTS: During the weightbearing activity from 20 degrees dorsiflexion to 15 degrees plantarflexion, the subtalar joint was significantly more everted, dorsiflexed, and abducted, and the calcaneus showed a significantly more posterior position, than during the nonweightbearing activity. The ankle joint was significantly more plantarflexed and adducted during the weightbearing activity than the nonweightbearing activity. The ankle-subtalar joint complex was significantly more everted, and the calcaneus showed significantly greater posterior position than the nonweightbearing activity. CONCLUSION: These observations provide basic quantitative descriptions of weightbearing and nonweightbearing kinematics for healthy joints. CLINICAL RELEVANCE: These data can serve as the basis for comparison with pathologic feet for both diagnostic and therapeutic purposes. |
| File Format | HTM / HTML |
| ISSN | 10711007 |
| Issue Number | 4 |
| Volume Number | 30 |
| e-ISSN | 19447876 |
| Journal | Foot & Ankle International |
| Language | English |
| Publisher | Sage Publication |
| Publisher Date | 2009-04-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Orthopedics Ankle Joint Physiology Pronation Subtalar Joint Supination Adult Biomechanical Phenomena Female Fluoroscopy Humans Male Range Of Motion, Articular Reference Values Weight-bearing Young Adult Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Surgery |
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