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. 2020 Oct 29;9(11):3498. doi: 10.3390/jcm9113498

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Cervical deformity showed little effect on the lower limb and spinal alignment itself. (A) Preoperative cervical lordosis: 3.35° and HKA angle: 8.63°. (B) Postoperative cervical lordosis: 3.55° and HKA angle: 2.37°. Thoracic deformity showed little effect on the lower limb and spinal alignment itself. (C) Preoperative thoracic kyphosis: 54.14° and HKA angle: 0.73°. (D) Postoperative thoracic kyphosis: 54.57° and HKA angle: 0.76°. The yellow line and circle are the measurement about sagittal HKA and cervical lordosis and thoracic kyphosis.