Relationship between patellofemoral finite helical axis and femoral trans-epicondylar axis using a static magnetic resonance-based methodology
| العنوان: | Relationship between patellofemoral finite helical axis and femoral trans-epicondylar axis using a static magnetic resonance-based methodology |
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| المؤلفون: | Bin Yang, Hong Cai, Hua Tian, Zhenguo Yu, Zhongjun Liu, Ke Zhang, Jie Yao |
| المصدر: | Journal of Orthopaedic Surgery and Research, Vol 16, Iss 1, Pp 1-10 (2021) Journal of Orthopaedic Surgery and Research |
| بيانات النشر: | BMC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Adult, Male, musculoskeletal diseases, medicine.medical_specialty, lcsh:Diseases of the musculoskeletal system, Knee Joint, Kinematics, Prosthesis Design, Patient Care Planning, 03 medical and health sciences, Young Adult, 0302 clinical medicine, Trans-epicondylar axis, lcsh:Orthopedic surgery, Screw axis, Orientation (geometry), Medicine, Humans, Orthopedics and Sports Medicine, Knee, Range of Motion, Articular, Finite helical axis, Orthodontics, 030222 orthopedics, medicine.diagnostic_test, business.industry, Magnetic resonance imaging, 030229 sport sciences, musculoskeletal system, Magnetic Resonance Imaging, Sagittal plane, Biomechanical Phenomena, lcsh:RD701-811, medicine.anatomical_structure, Patellofemoral joint, Coronal plane, Orthopedic surgery, Preoperative Period, Surgery, Female, lcsh:RC925-935, business, human activities, Research Article |
| الوصف: | Background To manage patellofemoral joint disorders, a complete understanding of the in vivo patellofemoral kinematics is critical. However, as one of the parameters of joint kinematics, the location and orientation of the patellofemoral finite helical axis (FHA) remains unclear. The purpose of this study is to quantify the location and orientation of the patellar FHA, both in vivo and non-invasively at various flexion angles, and evaluate the relationship of the FHA and the trans-epicondylar axis (TEA). Methods The magnetic resonance (MR) images of 18 unilateral knees were collected at full extension, 30°, 60°, 90°, and maximum angle of knee flexion. Three-dimensional models of the knee joint at different flexion angles were created using the MR images, and then used to calculate the patellar tracking and FHA with a spline interpolation algorithm. By using a coordinate system based on the TEA, the FHA tracking was quantified. Six parameters concerning the location and orientation of the patellar FHA were analysed. Results The average patellar FHA drew an L-shaped tracking on the midsagittal plane moving from the posteroinferior to the anterosuperior side of the TEA with knee flexion. Before 90° flexion, the patellar rotational radius decreased slightly, with an average value of 5.65 ± 1.09 cm. During 20° to 90° knee flexion, the average angle between the patellar FHA and the TEA was approximately 10° and that between the FHA and the coronal plane was maintained at about 0°, while that between the FHA and the level plane fluctuated between − 10° and 10°. Conclusions This study quantitatively reported the continuous location and direction of the patellar FHA during knee flexion. The patellar FHA was close to but not coincident with the femoral TEA both in location and orientation, and the patellar rotational radius decreased slightly with knee flexion. These findings could provide a clear direction for further studies on the difference in patellofemoral FHA among various types of patellofemoral disorders, and provide a foundation for the application of FHA in surgical evaluation, preoperative planning and prosthesis design, thereby assisting in the diagnosis and treatment of patellofemoral disorders. |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2085fb530b742e486d42daf8a428e3dTest https://doaj.org/article/fffd8595540d4e1f88d16526148e58caTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f2085fb530b742e486d42daf8a428e3d |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |