A Predictive Formula for Sagittal Vertical Axis in Japanese Women Using Spinopelvic-Hip Mismatch.

Kohei Takahashi¹, Ryo Fujita¹, Ko Hashimoto¹, Yu Mori¹, Kenichiro Yahata¹, Kazuyoshi Baba¹, Takahiro Onoki¹, Keisuke Ishikawa¹, Junya Kusakabe¹, Michiyoshi Sato², Takeshi Nakamura³, Ryo Sugawara⁴, Kyoichi Handa⁵, Haruo Kanno⁵, Hiroshi Ozawa⁴, Yasuhisa Tanaka³, Toshimi Aizawa¹

¹Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan.

²Department of Orthopaedic Surgery, Ishinomaki Loyal Hospital, Miyagi, Japan.

³Department of Orthopaedic Surgery, Tohoku Central Hospital, Yamagata, Japan.

⁴Department of Orthopaedic Surgery, JCHO Sendai Hospital, Sendai, Japan.

⁵Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University School of Medicine, Sendai, Japan.

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Abstract

INTRODUCTION: To develop a novel and simplified predictive formula for sagittal vertical axis (SVA) in women by incorporating spinopelvic-hip mismatch, aiming to improve accuracy while considering hip joint alignment. METHODS: A total of 257 female patients who underwent whole-spine radiography including the proximal femur were retrospectively analyzed. Patients were categorized into three cohort…

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