Fig. 1

A 64-year-old female patient with low back pain treated with lateral lumbar interbody fusion combine two-stage posterior screw fixation. (A, B) A preoperative standing anteroposterior and lateral full-length spine X-ray showed the following findings: Cobb angle of lumbar curve = 58.9°, LL = 4.3°, PT = 31.3°, LL-PI = 35.6°, SVA = 12.0 cm, coronal balance was 9.2 cm. (C, D) A standing anteroposterior and lateral full-length spine radiograph at postoperatively following ALIF from L2-5. The radiograph revealed Cobb angle of main curve = 48.7°, LL = 11.8°, PT = 21.6°, LL-PI = 24.3°, SVA = 5.9 cm, coronal balance was 8.5 cm. (E) After second-stage posterior fixation from T9-S2 combined with PSF, the standing anteroposterior and lateral full-length spine radiographs showed the Cobb angle of main curve = 23.2°, LL = 35.4°, PT = 9.6°, LL-PI = 8.5°, SVA = 3.8 cm, coronal balance was 1.2 cm. (F) At final follow-up the standing anteroposterior and lateral full-length radiographs showed the Cobb angle of main curve = 24.6°, LL = 32.9°, PT = 10.9°, LL-PI = 9.5°, SVA = 4.8 cm