Lesions of the prepatellar quadriceps continuation are partial or complete tears of the prepatellar quadriceps continuation, that can occur with or without patellar or quadriceps tendon tears and can cause anterior knee pain.
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Pathology
Disruption and separation of prepatellar quadriceps continuation cause 'lesions', with or without other injuries to the quadriceps or patellar tendon 1. This is a relatively novel diagnosis, that could be due to an acute injury or degeneration, and the clinical significance has yet not been established (c. 2020).
Associations
One series found a prevalence of ~40% in patients with quadriceps tendon rupture 3.
Radiographic features
Plain radiograph
It may be normal or show signs of osteoarthritis in the patellofemoral joint.
MRI
In pathological conditions, there is an abnormal signal intensity in the prepatellar fibrous tissue and fiber disruption of prepatellar quadriceps continuation. No space or bursa is detected between the prepatellar continuation and the anterior surface of the patella.
Treatment and prognosis
Physiotherapy is the mainstay of treatment and leads to a satisfactory recovery.
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