Abstract
To correct a lower limb deformity, orthopedic surgeons must have an exact understanding of the deformity. In general, preoperative planning is carried out using anterior-posterior (AP) and lateral radiographs. However, for severe cases with a combination of angular and rotational deformities of the lower limb, obtaining true AP and lateral radiographs is difficult and accurate calculation of the rotational deformity from radiographs is impossible. In this report, we propose to focus on preoperative assessment using three-dimensional (3D) reconstruction images of computed tomography (CT) scans for severe lower limb deformity in a patient with bilateral fibular hemimelia type II according to the Achterman- Kalamchi classification. She underwent bifocal deformity corrections of the bilateral tibiae using Taylor spatial frames in combination with the Ilizarov external fixator. Complete bony union was achieved, without angular deformity or limb length discrepancy.
Highlights
For the assessment and correction planning of lower limb deformities, true anterior-posterior (AP) and lateral radiographs are used [1,2]
We propose to focus on preoperative assessment using three-dimensional (3D) reconstruction images of computed tomography (CT) scans for severe lower limb deformity in a patient with bilateral fibular hemimelia type II according to the AchtermanKalamchi classification
We describe three-dimensional computed tomography (3D-CT) assessment and planning for severe lower limb deformity in a patient with bilateral fibular hemimelia type II according to the Achterman-Kalamchi classification [3]
Summary
For the assessment and correction planning of lower limb deformities, true anterior-posterior (AP) and lateral radiographs are used [1,2]. Two-dimensional preoperative planning can lead to errors and failure to achieve optimal correction in patients with severe lower limb deformities. Accurate calculation of the rotational deformity is impossible from radiographs. We describe three-dimensional computed tomography (3D-CT) assessment and planning for severe lower limb deformity in a patient with bilateral fibular hemimelia type II according to the Achterman-Kalamchi classification [3]. Deformity correction and bony union were achieved using Taylor spatial frames (TSF) [4,5,6] in combination with the Ilizarov external fixator [7,8,9,10]
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