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Uniplanar medial opening-wedge high tibial osteotomy can reduce the increase of posterior tibial slope more than biplanar high tibial osteotomy can
ESSKA Academy. Kyung B. Nov 8, 2019; 284356; epEKA-06 Topic: Open Surgery
Dr. Bong Soo Kyung
Dr. Bong Soo Kyung
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Uniplanar medial opening-wedge high tibial osteotomy can reduce the increase of posterior tibial slope more than biplanar high tibial osteotomy can

ePoster - epEKA-06

Topic: HTO

Suh D.W.1, Nha K.W.2, Han S.B.3, Cheong K.1, Kyung B.S.1
1Barunsesang Hospital, Joint center, Seongnam-si, Gyeonggi-do, Korea, Republic of, 2Ilsanpaik Hospital, Inje University, Department of Orthopaedic Surgery, Ilsan, Gyeonggi-do, Korea, Republic of, 3Korea University Anam Hospital, Korea University College of Medicine, Department of Orthopaedic Surgery, Seoul, Korea, Republic of

Purpose: To compare uniplanar high tibial osteotomy (HTO) and biplanar HTO, especially in terms of the increase of posterior tibial slope (PTS)
Methods: Medial opening-wedge HTO patients' medical records and radiological results in a single institution were retrospectively reviewed. Pre- and post-operative serial radiographs, including Rosenberg, lateral view, and standing anteroposterior view of the whole lower extremity, MRI at post-operative day 2, and Womac score at post-operative two years were reviewed to evaluate radiological and clinical results including the change of PTS.
Results: A total of 61 knees, including 34 uniplanar HTO and 27 biplanar HTO, were enrolled. There was no difference in pre- and post-operative mechanical angle or incidence of the lateral hinge fracture, and all patients showed complete union at post-operative two years. The PTS was increased more in the biplanar group than in the uniplanar group (3.1 ± 2.6 in biplanae vs 0.8 ± 1.7 in uniplanar, p < 0.05). Womac scores were 72 ± 9.3 in uniplanar and 75 ± 5.8 in biplanar group (n.s.).
Conclusion: Uniplanar medial opening-wedge HTO is better at preventing the increase of PTS than is biplanar HTO.
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