Prepatellar continuation rupture: Report of an unusual case

A rare knee extensor mechanism injury: Vastus intermedius tendon rupture

“…These are usually full thickness injuries. There is a limited number of studies in the literature, reporting partial quadriceps tendon ruptures [6–9] . Also we did not find any study reporting an isolated vastus intermedius tendon injury in the literature.…”

Análisis biomecánico de la continuación prepatelar del cuádriceps

“…6 Además, la indemnidad de la CPC es crucial para la extensión activa de la rodilla: un daño en esta estructura, aunque poco frecuente, provoca un déficit funcional severo. 2 7…”

“…1 La continuación prepatelar del cuádriceps (CPC) corresponde a las fibras del tendón del recto femoral que conectan el cuádriceps y el tendón rotuliano. 2 La CPC se une a la cortical anterior de la rótula mediante una unión de tipo condroapofisario, en la que el tendón se transforma gradualmente en fibrocartílago. 3 Durante el proceso embrionario de formación de la rótula, el tendón del cuádriceps incrusta superficialmente la rótula, lo que posteriormente dará lugar a la CPC.…”

“…6 Moreover, PQC indemnity is crucial for active knee extension: damage to this structure, although infrequent, causes severe functional deficit. 2 7…”

“…1 The prepatellar quadriceps continuation (PQC) corresponds to the fibers of the rectus femoris tendon that connect the quadriceps and patellar tendon. 2 The PQC is attached to the anterior cortex of the patella by a chrondroapophyseal type of junction in which the tendon is gradually transformed into fibrocartilage. 3 During the embryonic process of formation of the patella, the quadriceps tendon superficially embeds the patella, which will subsequently give rise to the PQC.…”