Classification of the interosseous tarsometatarsal ligaments of the foot

NewsBot · Feb 7, 2021

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Classification of the interosseous tarsometatarsal ligaments of the foot
Hyung-JinWonaChang-SeokOhb
Foot and Ankle Surgery 4 February 2021

Highlights
•Various interosseous tarsometatarsal ligaments were observed than previous literatures.
•Accessory ligaments above (34%) and/or below (6%) the Lisfranc ligament were observed in the first cuneometatarsal joint space.
•Two interosseous ligaments (iCn2,3-M2 and iCn2,3-M3) newly have been identified in the second cuneometatarsal joint spaces.
•The interosseous tarsometatarsal ligaments of the second and third cuneometatarsal joint spaces comprised seven and five components, and were classified into five and three types depending on the number and combination of the components, respectively.
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Background
The aim of this study was to clarify the anatomical features of the interosseous tarsometatarsal ligaments of foot and to classify their types based on the combinations of their ligamentous components.

Methods
Fifty feet from 27 adult Korean cadavers were dissected.

Results
The interosseous tarsometatarsal ligaments were observed in the first, second, and third cuneometatarsal joint spaces. The interosseous tarsometatarsal ligament of the first cuneometatarsal space consistently connected the medial cuneiform and the second metatarsal, and was accompanied by one or two accessory ligaments above (34%) and/or below (6%) the Lisfranc ligament. The interosseous tarsometatarsal ligaments of the second and third cuneometatarsal joint spaces comprised seven and five components, and were classified into five and three types depending on the number and combination of the components, respectively.

Conclusions
These results are expected to advance the current knowledge on the tarsometatarsal joint and provide helpful information for more accurate and successful diagnosis and treatment of lesions at this joint.
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