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Knee Surgery, Sports Traumatology, Arthroscopy
Published in: Knee Surgery, Sports Traumatology, Arthroscopy 7/2019

01-07-2019 | KNEE

Wider femoral and mediolaterally narrower tibial components are required for total knee arthroplasty in Turkish patients

Authors: Abdulhamit Misir, Kadir Ilker Yildiz, Turan Bilge Kizkapan

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 7/2019

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Abstract

Purpose

To evaluate the knee morphologic parameters in the Turkish population, compare them with known data, and identify new morphologic parameters.

Methods

Magnetic resonance (MR) images of 1000 healthy subjects aged 18–50 years were included. One orthopedic surgeon and one experienced musculoskeletal radiologist reviewed MR images and measured 22 morphologic parameters. Sex and side differences were evaluated. Correlations between age and measurement parameters were assessed. The measured parameters were compared with known data. Femoral and tibial condylar height differences were identified.

Results

A strong correlation was found among regarding all measurement parameters (p = 0.000 and k > 0.985 for all measurements) by both observers. A significant difference between the female and male subjects regarding the measurement parameters (p = 0.000) was found, except for the tibial coronal slope, posterior condylar angle (PCA), medial and lateral tibial slopes (MTS and LTS), and medial plateau depth. No measurement parameter was significantly correlated with age (n.s.). The femur surface ratio in male and female subjects was 1.29 ± 1.04 and 1.28 ± 1.12, respectively (n.s.). The tibial plateau aspect ratio was 61.4 ± 1.09 in males and 59.8 ± 1.57 in females (p = 0.004). The mean medial and lateral femoral condylar cartilage and bone height differences were 3.3 ± 1.1 and 3.1 ± 0.9 mm, respectively. The mean medial and lateral tibial condylar cartilage and bone height differences were 2.3 ± 0.3 and 1.6 ± 0.1 mm, respectively.

Conclusion

Compared to current designs, wider femoral and mediolaterally narrower tibial components are needed to provide well-fitting prosthesis and improve functional outcomes, especially in women. The data on femoral and tibial condylar height differences will be useful for future research on component design. In the clinical practice, the components developed based on these findings will have a substantial effect on postoperative outcomes and patient satisfaction.

Level of evidence

II.
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Metadata
Title
Wider femoral and mediolaterally narrower tibial components are required for total knee arthroplasty in Turkish patients
Authors
Abdulhamit Misir
Kadir Ilker Yildiz
Turan Bilge Kizkapan
Publication date
01-07-2019
Publisher
Springer Berlin Heidelberg
Published in
Knee Surgery, Sports Traumatology, Arthroscopy / Issue 7/2019
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI
https://doi.org/10.1007/s00167-019-05448-9

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