CME OnDemand: 2022 AOFAS Annual Meeting-The Use of Advanced Semi-Automated Bone Segmentation in Hallux Rigidus

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A study was conducted to assess the reliability of weight-bearing computed tomography (WBCT) measurements in the evaluation of Hallux Rigidus (HR) using a semi-automated segmentation system. The study compared the semi-automatic measurements with manual measurements and also compared the measurements between a group with HR and a control group. The study included 20 feet with HR and 20 feet without HR.<br /><br />The results showed that there was excellent agreement and consistency between manual and semi-automatic WBCT measurements for various parameters such as Hallux Valgus Angle, Intermetatarsal Angle, Interphalangeal Angle, Metatarsal Lengths, and Metatarsal Declination Angle. The correlation between manual and semi-automatic measurements was strong and positive.<br /><br />The study also demonstrated that the semi-automatic measurements were able to differentiate between pathological (HR) and non-pathological conditions for a specific parameter called Metatarsus Primus Elevatus (MPE). The results showed that the semi-automatic MPE measurements were able to identify the presence of HR.<br /><br />Overall, the study concluded that the semi-automatic WBCT measurements are reproducible and comparable to manual measurements. The advanced semi-automated segmentation software used in the study showed excellent reliability and can be integrated into clinical practice to facilitate decision making. The software can contribute to the establishment of big data in orthopedics and improve clinical-radiographic diagnoses of pathologies like HR.

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Kepler Carvalho, MD, Vinnel Mallavarapu, BS, Ryan Jasper, BS, Hee Young Lee, MD, Nacime SB Mansur, MD, Kevin N. Dibbern, PhD, Taylor Den Hartog, MD, Andrew Behrens, Ki Chun Kim, MD, Alexandre L. Godoy-Santos, MD, Cesar De Cesar Netto, MD, PhD

Keywords

weight-bearing computed tomography

Hallux Rigidus

semi-automated segmentation system

manual measurements

Hallux Valgus Angle

Intermetatarsal Angle

Metatarsal Lengths

Metatarsal Declination Angle

Metatarsus Primus Elevatus

reproducible measurements