Pictorial Review

Infrapatellar plica injury: Magnetic resonance imaging review of a neglected cause of anterior knee pain

Dharmendra K. Singh, Heena Rajani, Mukul Sinha, Amit Katyan, Saurabh Suman, Aayushi Mishra, Bibhu K. Nayak
South African Journal of Radiology | Vol 25, No 1 | a1973 | DOI: https://doi.org/10.4102/sajr.v25i1.1973 | © 2021 Dharmendra K. Singh, Heena Rajani, Mukul Sinha, Amit Katyan, Saurabh Suman, Aayushi Mishra, Bibhu K. Nayak | This work is licensed under CC Attribution 4.0
Submitted: 29 August 2020 | Published: 19 February 2021

About the author(s)

Dharmendra K. Singh, Department of Radiology, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, India
Heena Rajani, Department of Radiology, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, India
Mukul Sinha, Department of Radiology, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, India
Amit Katyan, Department of Radiology, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, India
Saurabh Suman, Department of Radiology, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, India
Aayushi Mishra, Department of Radiology, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, India
Bibhu K. Nayak, Department of Sport’s Medicine, Vardhman Mahavir Medical College, Safdarjung Hospital, New Delhi, India


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Abstract

Synovial plicae are normal remnants of synovial membranes within the knee joint cavity and are usually asymptomatic. Pathological infrapatellar plica, which is mostly due to plica injury, may be a potential cause of anterior knee pain, but is often overlooked and under-reported on magnetic resonance imaging (MRI). This pictorial review illustrates the MRI findings of infrapatellar plica injury and associated knee injuries, with emphasis on its differentiation from the mimics of plica injury.

Keywords

MR imaging; knee; synovial plica; infrapatellar plica injury; anterior knee pain.

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