Abstract
Purpose
The study aims to determine the correlations between the anatomical structures of the distal femur and proximal tibia associated with the anterior cruciate ligament (ACL).
Methods
Bilateral extremities of 293 patients [143 ACL-ruptured, 150 ACL-intact] (all male) were included in the study. Femoral bi-condylar width (BCW), intercondylar notch width (NW) in the distal femur, proximal tibia width (TW), and tibial eminence width (EW) parameters were measured in the proximal tibia. Indexes are calculated as intercondylar notch width index (NWI) = NW/BCW, tibial eminence width index (EWI) = EW/TW.
Results
BCW, NW, TW, and EW measurements were lower in the ACL-ruptured group, but the difference was statistically significant only in the NW (p = 0.009) and TW (p = 0.005) measurements. There was no difference between groups in the NWI. The EWI parameters were calculated higher in the ACL-ruptured group, and the difference was statistically significant (p = 0.02). In both groups, there were very strong correlations between BCW and TW (ACL-ruptured r = 0.820, ACL-intact r = 0.877) and between NW and NWI (ACL-ruptured r = 0.862, ACL-intact r = 0.852), also EW and EWI in ACL-intact group (r = 0.947).
Conclusions
The NW and TW measurements may give an idea about injury risk or prevention in morphological measurements. Correlations also show that the femur and tibia should consider together for ACL injuries.
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Availability of data and materials
The data that support the findings of this study are available on request from the corresponding author, KÇ. The data are not publicly available due to their containing information that could compromise the privacy of research participants.
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KÇ Study design, data collection and management, manuscript drafting and editing, figure design. İO Study design, data management, manuscript editing, table design. ZO Study design, physical examinations, surgical procedures, patient selection, manuscript editing. All authors approved the final manuscript.
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Ethical approval was obtained from our institution’s non-invasive clinical research ethics committee (2018–12/12). The study was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
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Çimen, K., Otağ, İ. & Oztemür, Z. The relationship of distal femur and proximal tibia morphology with anterior cruciate ligament injuries. Surg Radiol Anat 45, 495–501 (2023). https://doi.org/10.1007/s00276-023-03097-9
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DOI: https://doi.org/10.1007/s00276-023-03097-9