Evaluation of the alignment of the intersesamoidal ridge’s axis through 3D-printing models and digital method

Türkten İ., Ayanoğlu S., Şakul B. U.

20th Congress of the International Federation of Associations of Anatomists, İstanbul, Turkey, 5 - 07 August 2022, vol.16, pp.140

  • Publication Type: Conference Paper / Summary Text
  • Volume: 16
  • Doi Number: 10.2399/ana.22.002s
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.140
  • Istanbul Medipol University Affiliated: Yes


Objective: To evaluate the angle between the axis of the intersesamoidal ridge of the first metatarsal and the axis of the first metatarsal, studies were previously performed on dry bones. However, since dry bones can not accurately reflect the first metatarsophalangeal angle, it is not easy to establish its relationship with Hallux Valgus (HV). A 3D-Printed model may be important in accurately detecting the ridge axis in individuals with HV and health. Methods: According to our power analysis, 51 retrospectives computed tomographies of 25 individuals with HV and 26 healthy individuals were collected. The first metatarsal was modeled via 3D slicer software and exported in STL format. The angle between the axis of the intersesamoidal ridge and the axis of the first metatarsal was measured digitally via Ansys software. At the same time, the 3D-Print of the relevant model was taken and it was measured manually with a transparent protractor. Results: In the study, since the variables were normally distributed, dependent groups were measured with the t-test. As a result of the analysis, it was observed that there was no significant difference between digital and manual measurements (p>0.05). One case from the HV group was unsuitable for ridge measurement. Conclusion: In this study, we provide a protocol for detecting the ridge axis with an accurate, easy, and inexpensive method. 3D Models can be useful in the preoperative planning phase in HV surgery.