Anthropologic computed tomography investigation on the site and severity of the rotational deformity in hallux valgus
Refereed conference paper presented and published in conference proceedings


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AbstractIntroduction: Solely looking at the transverse plane deformity in hallux valgus fails to account for the entire deformity as the evidence supports a multiplanar deformity. It remains unknown whether the rotation occurs in the tarsal-metatarsal joint, within the metatarsal bone as bony torsion or distally at the metatarsal-phalangeal joint. Additionally, it is important to know whether the severity of coronal rotation directly correlates with transverse deformities and whether the coronal deformity affects foot-related function.

Methods: The scans were performed using Xtreme CT II and data were imported into Mimics and 3-Matic for analysis. The landmarks were determined on the medium cuneiform and first MT. Lines were connected accordingly and angles between them presented the rotation at TMTJ and torsion within first MT. FAOS questionnaire was used to evaluate the foot-related functions.

Results: The current study recruited 17 patients (23 feet) with HV and 16 control subjects. TMT joint rotation was found significantly different between two groups, while no difference was found in the first MT torsion. Neither TMT joint rotation nor MT torsion of HV patients exhibited significant relation with IMA or HVA. Only TMT joint rotation angle was found significantly correlated with quality of life.

Discussion and Conclusion: The coronal deformity in HV originates from TMT joint rotation. TMT joint procedures may be more appropriate. It also shows that TMT joint rotation develops independently to the transverse plane deformity, and severity of TMT joint rotation correlates with worse quality of life, regardless of IMA or HVA
Acceptance Date06/11/2021
All Author(s) ListRachel Xiao Yu Wei, Elvis Chui, Patrick Shu Hang Yung, Samuel Ka Kin Ling
Name of ConferenceThe Hong Kong Orthopaedic Association 41st Annual Congress 2021
Start Date of Conference06/11/2021
End Date of Conference07/11/2021
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Proceedings TitleThe Hong Kong Orthopaedic Association 41st Annual Congress 2021
Year2021
Month11
Day6
PublisherHKAM Press
Place of PublicationHong Kong
Pages96 - 96
LanguagesEnglish-United Kingdom
KeywordsHallux valgus

Last updated on 2022-27-07 at 16:54