Influence of femur condylus dysplasia on development of mediopatellar synovial fold hypertrophy

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Abstract

Among all anatomic folds of the knee joint, mediopatellar synovial fold has the highest rate of pathological changes that also have influence on adjacent anatomical structures. Presence rate of mediopatellar fold is 46–50% according to cadaveric data and 18–80% according to data acquired in an arthroscopic way. In this work, we studied the possible link between femur condylus dysplasia and forming of the mediopatellar fold. The MRI study was done to 116 patients divided into two equal groups (58 patients in each). The main group (group I) included patients with detected femur condylus dysplasia, the control group (group II) — patients without detected femur condylus dysplasia. Our results suggest that in the main group the mediopatellar fold is detected in 53 patients (91,4% of all cases), in the control group — in 4 patients (6,9% of all cases). The results support our hypothesis that while performing the arthroscopic treatment of the patologically thickened mediopatellar synovial fold, the dysplasia of femur condylus must be taken into account.

About the authors

Alexander A. Ochkurenko

N.N. Priorov National Medical Research Center

Author for correspondence.
Email: cito-omo@mail.ru
ORCID iD: 0000-0002-1078-9725
SPIN-code: 8324-2383

MD, PhD

Russian Federation, 10 Priorova str., Moscow, 127299

Alexander K. Morozov

N.N. Priorov National Medical Research Center

Email: morozovak@cito-priorov.ru
SPIN-code: 4447-8306

PhD

Russian Federation, 10 Priorova str., Moscow, 127299

Anton P. Kurpyakov

I.M. Sechenov First Moscow State Medical University (Sechenov University)

Email: kurpyakov_a_p@staff.sechenov.ru
SPIN-code: 3398-7972

MD, Cand. Sci. (Med.)

Russian Federation, Moscow

Alexander V. Gorokhvodatsky

N.N. Priorov National Medical Research Center

Email: avodatskiy@mail.ru

postgraduate student

Russian Federation, 10 Priorova str., Moscow, 127299

Konstantin S. Ivanov

N.N. Priorov National Medical Research Center

Email: cito-omo@mail.ru
SPIN-code: 2384-9328

traumatologist-orthopedist

Russian Federation, 10 Priorova str., Moscow, 127299

Igor N. Karpov

N.N. Priorov National Medical Research Center

Email: igorkarpoff@mail.ru
SPIN-code: 5943-3689

MD, Cand. Sci. (Med.); radiologist

Russian Federation, 10 Priorova str., Moscow, 127299

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Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 1. On the fatty tissue, axial T2VI incisions are suppressed, extending from the center of the patella 3 cm above the joint space. The mediopatellar synovial fold is determined: a — type A in combination with type A femoral condyle dysplasia; b — type B in combination with type B femoral condyle dysplasia, synovitis increases the visibility of the mediopatellar synovial fold; c — type B in combination with type C femoral condyle dysplasia

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3. Fig. 2. Magnetic resonance imaging (a) (axial slices of T2VI) revealed a thick, fibrosed medial patellar synovial fold of type D, partially covering the medial femoral condyle with the development of Shelf syndrome, and medial patellar facet cartilage damage; arthroscopy (b) correlated with magnetic resonance imaging data

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4. Fig. 3. Types of dysplasia of the femoral condyle according to the classification of D. Dejour [16]

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5. Fig. 4. Dependence of the development of a hypertrophied thickened mediopatellar synovial fold on the type of dysplasia of the femoral condyle

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