How should congenital absence of cruciate ligaments be treated? A case report and literature review

Figure 1 X-ray images. A: Unequal width of the joint spaces; B: Anterior and medial displacement of the tibial plate.

Figure 2 Magnetic resonance imaging scan showing cruciate ligament deficiency. A: Left knee joint anterior displacement with subluxation; B: Mild abrasion in the medial tibial platform; C: Femoral articular surface wear.

Figure 3 X-ray images showing the left knee with no loosening of the internal fixation.

Figure 4 X-ray images. A: Correct alignment of the left knee and unequal length of the lower limbs with right knee inversion to the medial; B: Left knee tibial plateaus moving inwards; C: Equal width of the joint spaces.