Abstract
Background
In hallux valgus surgery, it is essential to accurately assess the position of the
sesamoids both pre- and postoperatively. Weight-bearing foot anteroposterior, tangential
sesamoid, and semi-weight-bearing computed tomography axial views are radiographic
methods used to assess the medial sesamoid position. This study aimed to measure the
medial sesamoid position and evaluate the correlation between these three radiographic
methods.
Methods
This retrospective study comprised 59 feet from 49 patients who underwent hallux valgus
surgery. The mean age of patients was 54.6 (range, 22–70) years. We took preoperative
and postoperative measurements using the weight-bearing anteroposterior, tangential
sesamoid, and semi-weight-bearing computed tomography axial views to assess the medial
sesamoid position.
Results
The mean grades of the medial sesamoid position preoperatively and 6 months postoperatively
were 2.5 and 0.8, 1.6 and 0.4, and 1.3 and 0.3 points based on the anteroposterior,
tangential sesamoid, and computed tomography axial views, respectively (P < 0.001). Preoperatively, there was a strong positive correlation between the computed
tomography axial and tangential sesamoid views (P < 0.001, r = 0.645) and anteroposterior and computed tomography axial views (P < 0.001, r = 0.468). In contrast, the tangential sesamoid and anteroposterior views showed a
weak positive correlation (P = 0.03, r = 0.283). Six months postoperatively, there was a positive correlation between the
computed tomography axial and tangential sesamoid views (P < 0.001, r = 0.473), anteroposterior and computed tomography axial views (P < 0.001, r = 0.470), and tangential sesamoid and anteroposterior views (P < 0.001, r = 0.480).
Conclusions
We observed that the anteroposterior view exhibited a higher degree of medial sesamoid
position displacement than the computed tomography axial and tangential sesamoid views.
For the preoperative evaluation of the medial sesamoid position, the correlation between
the computed tomography axial and tangential sesamoid views was stronger than that
between the tangential sesamoid and anteroposterior views. However, all three views
showed strong correlations postoperatively.
Keywords
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Article info
Publication history
Published online: February 24, 2023
Accepted:
February 3,
2023
Received in revised form:
January 20,
2023
Received:
October 4,
2022
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2023 Published by Elsevier B.V. on behalf of The Japanese Orthopaedic Association.
