Phenotyping the knee in young non-osteoarthritic knees shows a wide distribution of femoral and tibial coronal alignment
| Autor: | Silvan Hess, Felix Amsler, Vincent Leclercq, Lukas B. Moser, Michael T. Hirschmann, Henrik Behrend |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
musculoskeletal diseases
Adult Male medicine.medical_specialty Adolescent Knee Joint Population 03 medical and health sciences Young Adult 0302 clinical medicine Joint line medicine Humans Orthopedics and Sports Medicine Lack of knowledge Femur Tibia education Retrospective Studies Orthodontics 030222 orthopedics education.field_of_study biology business.industry 030229 sport sciences musculoskeletal system biology.organism_classification Biomechanical Phenomena Valgus Phenotype Coronal plane Orthopedic surgery Surgery Female business Tomography X-Ray Computed human activities |
| Zdroj: | Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA. 27(5) |
| ISSN: | 1433-7347 |
| Popis: | There is a lack of knowledge about the joint line orientation of the femur and tibia in non-osteoarthritic knees. The primary purpose of the present study was to evaluate the orientation of the joint lines in native non-osteoarthritic knees using 3D-reconstructed CT scans. The secondary purpose was to identify knee phenotypes to combine the information of the femoral and tibial alignment. A total of 308 non-osteoarthritic knees of 160 patients (male to female ratio = 102:58, mean age ± standard deviation 30 ± 7 years (16–44 years) were retrospectively included from our registry. All patients received CT of the knee according to the Imperial Knee Protocol. The orientation of the femoral and tibial joint line was measured in relation to their mechanical axis (femoral mechanical angle, FMA, and tibial mechanical angle, TMA) using a commercially planning software (KneePLAN 3D, Symbios, Yverdon les Bains, Switzerland). The values of FMA and TMA were compared between males and females. Descriptive statistics, such as means, ranges, and measures of variance (e.g. standard deviations), were presented. Based on these results, phenotypes were introduced for the femur and tibia. These phenotypes, based on FMA and TMA values, consist of a mean value and cover a range of ± 1.5° from this mean (3° increments). The distribution of femoral and tibial phenotypes, and their combinations (knee phenotypes) were calculated for the total group and for both genders. The overall mean FMA ± standard deviation (SD) was 93.4° ± 2.0° and values ranged from 87.9° varus to 100° valgus. The overall mean TMA ± SD was 87.2° ± 2.4° with a range of 81.3° varus to 94.6° valgus. FMA and TMA showed significant gender differences (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink