Document

Factors Causing Unintended Sagittal and Axial Changes in HTO

Description

Unintended secondary changes in posterior tibial slope (PTS) and tibial torsion angle (TTA) may occur after medial open wedge high tibial osteotomy (MOWHTO). In surgical procedures using patient-specific instruments (PSI), it is essential to reproduce the PTS and TTA as planned for simulation. This study aims to the factors causing unintended sagittal and axial alignment changes after MOWHTO. Axial hinge axis angle caused the difference in PTS between simulation and actual surgery. TTA change was caused by a combination of multiple factors, such as large correction angle and anterior osteotomy angle but mainly by the instability of the lateral cortical hinge.

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Author

Se-Han Jung MD.

Se-Han Jung

Doctor

Gangnam Severance Hospital, Yonsei University College of Medicine

C C

Chong-Hyuk Choi

Professor

Severance Hospital, Yonsei University College of Medicine

M J

Min Jung

Professor

Severance Hospital, Yonsei University College of Medicine

K C

Kwangho Chung

Professor

Yongin Severance Hospital, Yonsei University College of Medicine

J B

Junwoo Byun

Doctor

Severance Hospital, Yonsei University College of Medicine

J K

Jingyu Kim

Doctor

Severance Hospital, Yonsei University College of Medicine

Y P

Youngjin Park

Doctor

Gangnam Severance Hospital, Yonsei University College of Medicine

Sung-Hwan Kim MD.PhD.

Sung-Hwan Kim

Professor

Gangnam Severance Hospital, Yonsei University College of Medicine

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