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Congress: ECR26
Poster Number: C-11391
Type: Poster: EPOS Radiologist (educational)
Authorblock: I. Togrul, A. G. Erdemir, S. Arslan Sarıkaya, A. E. Yıldız; Ankara/TR
Disclosures:
Irem Togrul: Nothing to disclose
Ahmet Gürkan Erdemir: Nothing to disclose
Sevtap Arslan Sarıkaya: Nothing to disclose
Adalet Elçin Yıldız: Nothing to disclose
Keywords: Bones, Musculoskeletal bone, Conventional radiography, CT, MR, Education, Demineralisation-Bone, Trauma
Learning objectives To review the normal anatomy of the patella and highlighting patellar pathologies with key imaging features.
Read more Background The patella is the largest sesamoid bone and lacks a true periosteum. It's located anterior to the knee, embedded within the patellar tendon, serving as an attachment site for quadriceps and patellar tendons[1,2]. [fig 1]   Patellar morphology is described by the Wiberg classification. It's clinically relevant because posterior patella articulates with the femoral trochlear groove. [fig 2]
Read more Findings and procedure details ANATOMY RELATED DISORDERSPatella alta refers to a superiorly positioned patella, resulting in delayed engagement with the trochlear groove during knee flexion and predisposing to patellofemoral instability and dislocation[3].Patella baja, describes an inferiorly positioned patella, most commonly seen in post-traumatic or post-operative knees. It may lead to anterior knee pain, reduced range of motion, altered patellofemoral mechanics[1].Both conditions can be evaluated using the Insall–Salvati or Caton–Deschamps index[1,2]. [fig 3]  Patellar tracking and patellofemoral joint instability:The convex posterior surface of the patella articulates with the...
Read more Conclusion The patella is a key component of the knee joint and may be affected by a wide range of conditions. Radiologists should be familiar with its normal anatomy and the spectrum of patellar diseases to ensure accurate diagnosis.
Read more Personal information Hacettepe University Department of Radiology
Read more References [1]       A.J.S. Fox, F. Wanivenhaus, S.A. Rodeo, The Basic Science of the Patella: Structure, Composition, and Function, The Journal of Knee Surgery 25 (2012) 127–142. https://doi.org/10.1055/s-0032-1313741.[2]       R.E. Watts, T. Gorbachova, R.C. Fritz, S.S. Saad, A.M. Lutz, J. Kim, A.S. Chaudhari, K.G. Shea, S.L. Sherman, R.D. Boutin, Patellar Tracking: An Old Problem with New Insights, RadioGraphics 43 (2023) e220177. https://doi.org/10.1148/rg.220177.[3]       R.M. Biedert, P.M. Tscholl, Patella Alta: A Comprehensive Review of Current Knowledge, (n.d.).[4]       D.V. Flores, C. Mejía Gómez, M.N. Pathria, Layered...
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