Document Detail

In vivo three-dimensional analysis of hindfoot kinematics.
MedLine Citation:
PMID:  19912721     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Knowledge of normal bone motion of the foot is important for understanding the gait as well as for various pathologies; however, the pattern of 3D motion is not completely understood. The aim of this study was to quantify the in vivo motion of the tibiotalar joint, talocalcaneal joint, and talonavicular joint in normal adult feet using a noninvasive (e.g., nonsurgical) measurement technique.
MATERIALS AND METHODS: CT images were taken of both feet of ten normal young adults (six males, four females) in neutral, plantarflexion, and dorsiflexion positions of the ankle joint, from which 3D virtual models were made of each mid-hind foot bones. The 3D bone motion of these models was calculated using volume merge methods in three major planes. These data were used to analyze the relationship between the motion of the ankle joint and each other joint.
RESULTS: Tibiotalar rotation was observed in dorsiflexion, abduction, and eversion during maximal dorsiflexion of the ankle joint. Talocalcaneal and talonavicular rotation was very small because the ankle joint motion was limited to the sagittal plane. Tibiotalar rotation was also observed in plantarflexion and adduction during maximal plantarflexion of the ankle joint, and talocalcaneal rotation was very small. Talonavicular rotation was observed in plantarflexion and inversion. The motion of the x-axis and the z-axis of tibiotalar joint, and the x-axis and the y-axis of the talonavicular and talocalcaneal joint were associated with the ankle motion.
CONCLUSION: Bone motion could be easily and accurately calculated using volume merge methods more effectively than it could with other methods.
CLINICAL RELEVANCE: The data elucidates the baseline segmental motion for comparison with symptomatic subjects which could help us to better understand pathokinematics of various foot and ankle pathologies.
Kan Imai; Daisaku Tokunaga; Ryota Takatori; Kazuya Ikoma; Masahiro Maki; Hiroki Ohkawa; Akiko Ogura; Yoshiro Tsuji; Nozomu Inoue; Toshikazu Kubo
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Foot & ankle international     Volume:  30     ISSN:  1071-1007     ISO Abbreviation:  Foot Ankle Int     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-11-16     Completed Date:  2009-12-22     Revised Date:  2014-08-27    
Medline Journal Info:
Nlm Unique ID:  9433869     Medline TA:  Foot Ankle Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1094-100     Citation Subset:  IM    
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MeSH Terms
Ankle Joint / physiology*
Biomechanical Phenomena
Foot / physiology*
Imaging, Three-Dimensional
Range of Motion, Articular / physiology*
Subtalar Joint / physiology
Talus / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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