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Lateral femoral sliding osteotomy in total knee arthroplasty with valgus deformity greater than twenty degrees

  • Feng Li
  • Ning Liu
  • Zijian Li
  • Kirkham B. Wood
  • Hua TianEmail author
Original Paper
  • 27 Downloads

Abstract

Purpose

Lateral femoral sliding osteotomy has been reported as an effective technique for total knee arthroplasty (TKA) with significant valgus deformity. This study aims to investigate its utility in TKA with valgus deformity greater than 20°, for which few studies have examined.

Methods

Consecutive TKA patients with valgus deformity treated with the sliding osteotomy at our institution were retrospectively studied. Constraint implants were not used. Radiological and clinical parameters at follow-ups were compared with those pre-operatively. Radiological parameters included the hip-knee-ankle angle (HKA), the anatomical lateral distal femoral angle (aLDFA), the anatomical lateral plateau ankle angle (aLPTA), and the angle between the femoral mechanical axis and transepicondylar line (femoral transepicondylar angle, FTEA) which was used to reflect concurrent extra-articular valgus and corresponding local alignment. Clinical outcome measures included the Knee Society Score and Functional Score.

Results

Twenty-five patients operated on between July 2011 and February 2017 were enrolled. The average follow-up time was 3.3 (1.5~7.9) years. The pre-operative HKA of 202.7 ± 2.3° (equivalent to valgus of 22.7 ± 2.3°) was reduced to 180.4 ± 2.3° at final follow-ups (P < 0.001). The aLFDA, aLPTA, and FTEA were all significantly improved, with the last one increased from 84.2 ± 1.8° to 89.6 ± 1.6° (t = − 11.35, P < 0.001). All clinical scores were significantly improved without major complications.

Conclusions

Lateral femoral sliding osteotomy can be effective and safe for TKA with severe valgus deformity greater than 20°.

Keywords

Lateral femoral sliding osteotomy Total knee arthroplasty Valgus deformity 

Notes

Compliance with ethical standards

This retrospective study was approved by the hospital ethics committee of the corresponding author’s hospital.

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© SICOT aisbl 2019

Authors and Affiliations

  1. 1.Department of OrthopaedicsPeking University Third HospitalBeijingChina
  2. 2.Department of Orthopaedic SurgeryStanford University Medical CenterRedwood CityUSA

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