Imaging of the Pes Cavus Deformity

Area of Science:

• Orthopedics
• Radiology
• Podiatry

Background:

• Direct-type cavus foot deformities are the most frequent type encountered.
• These deformities are primarily characterized by sagittal plane abnormalities.
• Distinguishing direct cavus foot from rarer triplane pes cavovarus is crucial.

Purpose of the Study:

• To emphasize the diagnostic importance of radiographic imaging in evaluating direct cavus foot deformity.
• To highlight the role of specific radiographic measurements in assessing and subcategorizing cavus foot deformities.
• To underscore the utility of ancillary imaging techniques in surgical planning for pes cavus.

Main Methods:

• Utilizing lateral weight-bearing radiography as the primary imaging modality.
• Analyzing the Meary talo-first metatarsal angle on lateral radiographs to identify the apex of the deformity.
• Employing ancillary techniques such as the modified Saltzman view and modified Coleman block test.

Main Results:

• The lateral weight-bearing radiograph serves as the fundamental tool for evaluating direct pes cavus.
• The apex of the Meary talo-first metatarsal angle on lateral views pinpoints the cavus deformity's severity.
• Ancillary radiographic views provide valuable data for comprehensive deformity assessment.

Conclusions:

• Radiographic evaluation, centered on lateral weight-bearing views and Meary's angle, is essential for direct cavus foot deformity.
• Ancillary imaging techniques like the modified Saltzman view and Coleman block test enhance surgical planning.
• Accurate assessment through these methods aids in effective management of pes cavus.