Academic Journal
In Vivo Length Changes Between the Attachments of the Medial Patellofemoral Complex Fibers in Knees With Anatomic Risk Factors for Patellar Instability
| العنوان: | In Vivo Length Changes Between the Attachments of the Medial Patellofemoral Complex Fibers in Knees With Anatomic Risk Factors for Patellar Instability |
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| المؤلفون: | Tanaka, Miho J., Mirochnik, Karina, Simeone, F. Joseph, Berkson, Eric M., Doornberg, Job N., Mangudi Varadarajan, Kartik |
| المصدر: | Tanaka , M J , Mirochnik , K , Simeone , F J , Berkson , E M , Doornberg , J N & Mangudi Varadarajan , K 2023 , ' In Vivo Length Changes Between the Attachments of the Medial Patellofemoral Complex Fibers in Knees With Anatomic Risk Factors for Patellar Instability ' , American Journal of Sports Medicine , vol. 51 , no. 7 , pp. 1765-1776 . https://doi.org/10.1177/03635465231165296 |
| سنة النشر: | 2023 |
| المجموعة: | University of Groningen research database |
| مصطلحات موضوعية: | biomechanics, knee, ligaments, medial patellofemoral complex, medial patellofemoral ligament, patella, patella alta, patellofemoral, TT-TG distance |
| الوصف: | Background: Medial patellofemoral complex (MPFC) reconstruction plays an important role in the surgical treatment of patellar instability. Anatomic reconstruction is critical in re-creating the native function of the ligament, which includes minimizing length changes that occur in early flexion. Anatomic risk factors for patellar instability such as trochlear dysplasia, patella alta, and increased tibial tuberosity to trochlear groove (TT-TG) distance have been shown to influence the function of the MPFC graft in cadaveric studies, but the native length change patterns of the MPFC fibers in knees with anatomic risk factors have not been described. Purpose: To describe the in vivo length changes of the MPFC fibers in knees with anatomic risk factors for patellar instability and identify the optimal attachment sites for MPFC reconstruction. Study Design: Controlled laboratory study. Methods: Dynamic computed tomography imaging was performed on the asymptomatic knee in patients with contralateral patellar instability. Three-dimensional digital knee models were created to assess knees between 0° and 50° of flexion in 10° increments. MPFC fiber lengths were calculated at each flexion angle between known anatomic attachment points on the extensor mechanism (quadriceps tendon, MPFC midpoint [M], and patella) and femur (1, 2, and 3, representing the proximal to distal femoral footprint). Changes in MPFC fiber length were compared for each condition and assessed for their relationships to morphologic risk factors (trochlear depth, Caton Deschamps Index [CDI], and TT-TG distance). Results: In 22 knees, native MPFC fibers were found to be longer at 0° than at 20° to 50° of flexion. Length changes observed between 0° and 50° increased with the number of risk factors present. In the central fibers of the MPFC (M-2), 1.7% ± 3.1% length change was noted in knees with no anatomic risk factors, which increased to 5.6% ± 4.6%, 17.0% ± 6.4%, and 26.7% ± 6.8% in the setting of 1, 2, and 3 risk factors, respectively. Nonanatomic ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.1177/03635465231165296 |
| الاتاحة: | https://hdl.handle.net/11370/87562939-8061-4402-9ea3-38048073bed6 https://research.rug.nl/en/publications/87562939-8061-4402-9ea3-38048073bed6 https://doi.org/10.1177/03635465231165296 https://pure.rug.nl/ws/files/789694097/tanaka-et-al-2023-in-vivo-length-changes-between-the-attachments-of-the-medial-patellofemoral-complex-fibers-in-knees.pdf |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.32B11006 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1177/03635465231165296 |
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