The effect of knee joint rotation in the sagittal and axial plane on the measurement accuracy of coronal alignment of the lower limb

BMC Musculoskeletal Disorders
Hyun-Soo MoonSung-Hwan Kim

Abstract

Although the measurement of coronal alignment of the lower limb on conventional full-length weight-bearing anteroposterior (FLWAP) radiographs was reported to be influenced by the knee joint rotation, no comparative analysis was performed considering the effects of knee joint rotation on the sagittal and axial planes simultaneously using the three-dimensional images while taking into account the actual weight-bearing conditions. The aim of this study was to investigate the effect of knee joint rotation on the measurement accuracy of coronal alignment of the lower limb on the FLWAP radiograph. Radiographic images of 90 consecutive patients (180 lower limbs) who took both the FLWAP radiograph and the EOS image were retrospectively reviewed. The relationship among delta values of mechanical tibiofemoral angle (mTFA) between the FLWAP radiographs and the EOS images (ΔmTFA), knee flexion/extension angle (sagittal plane rotation) on the EOS images, and patellar rotation (axial plane rotation) on the FLWAP radiographs were analyzed. Further, subgroup analysis according to each direction of knee joint rotation was performed. There was a significant correlation between ΔmTFA and sagittal plane rotation (r = 0.368, P <  0.001), whereas a...Continue Reading

References

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Citations

Oct 7, 2020·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Hyun-Soo MoonSung-Hwan Kim
May 28, 2021·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Jeremy DaxheletMichel P Bonnin
Oct 2, 2021·Archives of Orthopaedic and Trauma Surgery·Marc-Daniel AhrendFelix Finger

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Methods Mentioned

BETA
imaging techniques

Software Mentioned

SPSS
POWER
sterEOS

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