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KMID : 0896719970010010043
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Journal of the Korean Society of Foot Surgery
1997 Volume.1 No. 1 p.43 ~ p.50
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Normal Variation and Incidence of Coincided Alignment on Lisfanc Joint on Normal Foot Radiography
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Kang Chung-Nam
Kim Jong-Oh
Ko Sang-Hun
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Abstract
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The tarsometatarsal joint complex is forrneci by articulat.ion of the five rnetatarsal bases wit.h t.he three cuneiform bones and the cuboid bone. Fracture dislocation of tarsametatarsal area are difficult to recognize on standard radiographs. The exact diagnosis is occasionally delayed. As a result, improper t.reatment and late sequelae remains. We decided to make a study of patient.s with normal foot radiographs on 200 cases. Standard radiographic evaluation was used to study the normal variants of the foot and to eva1uate t.he coincided alignment of the lisfranc joint,. Accurate accessment, on AP & lateral & 30oblique project,ion of radiographs are very aclventageous & important, and next final outcome was detected. 1. Coincided alignment. below 1mm and unfolded lisfranc joint on AP projection was well visalized on 1st. cuneiform metatarsal la1.eral border and 2nd cuneiform metatarsal medial border. 2. Coincided alignment helow 1mm and unfolded lisfranc joint, on oblique project,ion vas we]1 visualized on 2nd cuneiform metatarsal lateraJ border and 3rd cuneiform metat.arsal medial border and 3rd cuneform metatarsal lateral harder. 3. More proxinia1 locat.ion of 2nd lisfranc joint cornpared to another joint. rvas 196 cases (98%). It is due to inceleration of 2nd metatarsal base between 3rd & lst cuneiform. 4. 3rd lisfranc joint was volarward position compareci to 2nd listranc on lateral project.ion at 191 cases (95.5%). It,’s due to anterior covexity of lisfranc joint. 5. Wide dorsal sided 2nd lisfranc is investigated at 189 cases (94.5%). Because of it, 2nd 3rd lisfrances are mainly volar dislocated usually. 6. Notching on 5th metatarsal base is visihle on 171 cases (85.5%). 7. 4th lisfranc joint had offset normally within 2-3mm at. 98 cases (49%). 8. 5th Lisfranc joint had normally offset within 2-3mm at 99 cases (49.5%). 9. On lateral project.ion, slight dorsal location of cuneiform to rnetatarsal base is investigated at 82 cases (41%).
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KEYWORD
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Tarsometatarsal joint, Normal foot. radiography, Alignment, Normal variants
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