Anatomical Variants of Lister’s Tubercle. Presentation of an Imaging Classification and Its Clinical Utility

Main Article Content

Matías Sala
Juan Francisco González

Abstract

Objective: To retrospectively evaluate the different variants of Lister’s tubercle (LT) and extensor pollicis longus (EPL) using magnetic resonance imaging (MRI) of the wrists, and based on these findings propose variables for classification.
Materials and Methods: Retrospective study using images from MRI database files between 03/01/19 to 11/10/19. We included MRI of the wrist of healthy patients (axial, sagittal, and coronal slices of 1 mm thickness) who were older than 18 years, with no history of previous or current wrist or carpal fracture, excluding those who did not meet these criteria. We analyzed LT, height of the radial and ulnar peaks, the angle, tubercle length, depth of the grooves and septum height. We evaluated the EPL, analyzing the height, thickness, surface, and presence of associated inflammation.
Results: We evaluated 500 MRI of the wrist, obtaining 11 different subtypes of LT. We found 411 type 1 Lister tubercles, 58 type 2, and 26 type 3. Among these, the most frequent were types 1b. 26.6% presentedasymptomatic inflammation in 3rd and 4th compartments.
Conclusion: Lister’s tubercle is of importance in many procedures and serves as an anatomical landmark, meriting to know its most frequent pattern and its anatomical variants. We propose an extension of the classification, adding new types of tubercles to be known and their relationship with the EPL.

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How to Cite
Sala, M., & González, J. F. (2022). Anatomical Variants of Lister’s Tubercle. Presentation of an Imaging Classification and Its Clinical Utility. Revista De La Asociación Argentina De Ortopedia Y Traumatología, 87(1), 34-40. https://doi.org/10.15417/issn.1852-7434.2022.87.1.1314
Section
Clinical Research
Author Biographies

Matías Sala, Clínica del Valle SRL, Comodoro Rivadavia, Chubut, Argentina

Hospital Regional de Comodoro Rivadavia “Dr. Víctor Manuel Sanguinetti”, Chubut, Argentina Clínica del Valle SRL, Comodoro Rivadavia, Chubut, Argentina

Juan Francisco González, Clínica Gamma, La Plata, Buenos Aires, Argentina

Acute Care General Hospital “General San Martín”, La Plata, Buenos Aires, Argentina

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