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Changes in patellar height and posterior tibial slope angle following uniplanar medial opening wedge high tibial osteotomy using a novel wedge-shaped spacer implanation concurrent with proximal partial fibulectomy

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Abstract

Purpose

The purpose of this study was to evaluate changes of patellar height and posterior tibial slope angle following uniplanar medial opening wedge high tibial osteotomy using a novel wedge-shaped spacer implanation concurrent with proximal partial fibulectomy.

Methods

All patients who underwent uniplanar medial opening wedge high tibial osteotomy using a novel wedge-shaped spacer implanation concurrent with proximal partial fibulectomy between January 2017 and February 2019 were included and assessed retrospectively. Radiological assessment was made in terms of the changes in patellar height and posterior tibial slope angle between pre-operative and post-operative radiographs.

Results

Thirty-five patients (9 males and 26 females) with a mean age of 57.3 years (range 50.8–64.2 years) were enrolled in this study protocol and demonstrated decreased posterior tibial slope angle post-operatively (9.7° ± 2.5° pre-operatively and 7.3° ± 1.8° post-operatively, P < 0.001). Patellar height was unchanged significantly post-operatively (Caton–Deschamps: 0.83 ± 0.12 pre-operatively and 0.82 ± 0.09 post-operatively, P > 0.05).

Conclusions

Uniplanar medial opening wedge high tibial osteotomy using a novel wedge-shaped spacer implanation concurrent with proximal partial fibulectomy can decrease posterior tibial slope and maintain the patellar height.

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Author notes

  1. Xiangtian Deng, Wei Chen and Kuo Zhao contributed equally to this work.

Authors and Affiliations

  1. School of Medicine, Nankai University, Tianjin, 300071, People’s Republic of China

    Xiangtian Deng, Jian Zhu, Zhipeng Ye & Yingze Zhang

  2. Department of Orthopaedic Surgery of Hebei Province, Third Hospital of Hebei Medical University, 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, People’s Republic of China

    Xiangtian Deng, Wei Chen, Kuo Zhao, Hongzhi Hu, Xiaodong Cheng, Zhongzheng Wang, Yuchuan Wang, Zhanchao Tan & Yingze Zhang

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  1. Xiangtian Deng
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Correspondence to Yingze Zhang.

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This study was supported by the National Natural Science Foundation of China (Grant No. 81401789). No other conflict of interestexits.

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Deng, X., Chen, W., Zhao, K. et al. Changes in patellar height and posterior tibial slope angle following uniplanar medial opening wedge high tibial osteotomy using a novel wedge-shaped spacer implanation concurrent with proximal partial fibulectomy. International Orthopaedics (SICOT) 45, 109–115 (2021). https://doi.org/10.1007/s00264-020-04786-5

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