Clin Orthop Surg.  2024 Feb;16(1):141-148. 10.4055/cios23221.

Comparison of the Usefulness of ComputerAssisted Three-Dimensional Analysis and WeightBearing Radiographs in Ankle Osteoarthritis

• Lee SW
• Yon CJ
• Kim JH
• Lee JM
• Lee JH
• Heo YR

• KMID: 2550838
• DOI: http://doi.org/10.4055/cios23221

Abstract

Background
To evaluate the degree of deformation in patients with ankle osteoarthritis (OA), it is essential to measure the threedimensional (3D), in other words, stereoscopic alignment of the ankle, subtalar, and foot arches. Generally, measurement of radiological parameters use two-dimensional (2D) anteroposterior and lateral radiographs in a weight-bearing state; however, computeraided 3D analysis (Disior) using weight-bearing cone-beam computed tomography (CBCT) has recently been introduced.
Methods
In this study, we compared the 2D human radiographic method with a stereoscopic image in patients with ankle arthritis. We enrolled 57 patients diagnosed with OA (28 left and 29 right) and obtained both standing radiographs and weight-bearing CBCT. Patients were divided by the Takakura stage. The interclass correlation coefficient (ICC) for each result was confirmed.
Results
On the ICC between 2D radiographs and 3D analysis, the tibiotalar surface angle and lateral talo-1st metatarsal angle showed a good ICC grade (> 0.6), while other parameters did not have significant ICC results. Three-dimension was superior to radiographs in terms of statistical significance.
Conclusions
We demonstrated that 2D and stereoscopic images are useful for the diagnosis of OA. Our study also confirmed that the radiographic features affected by ankle OA varied. However, according to the results, the typical radiography is not sufficient to diagnose and determine a treatment plan for ankle OA. Therefore, the method of using 3D images should be considered.

Keyword

Osteoarthritis; Radiologic picture; Three-dimensional; Disior; Cone-beam computed tomography