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Fig. 2 | BMC Surgery

Fig. 2

From: Contralateral translaminar endoscopic approach for highly down-migrated lumbar disc herniation using percutaneous biportal endoscopic surgery

Fig. 2

Measuring the length of facet joint plane and calculated the ratio of ipsilateral/contralateral the length of facet joint plane in preoperative (a) and postoperative axial CT images (b). Preoperative ratio is 0.93 (= 11.65 [contralateral]:12.55 [ipsilateral]). Postoperative ratio is 0.91 (= 11.26:12.32). Reduction rate is 2.15% ([0.93 − 0.91/0.93] × 100)

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BMC Surgery

ISSN: 1471-2482

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