Possible Rectus Femorus injury?

Hi guys, I'm a third year student wondering about an injury of a patient we have come across that has both myself and my tutor stumped. The patient injured his knee playing rugby 2/52 ago there was a lot of swelling around the knee still two weeks later after testing it was found he had some medial meniscus pain but his main pain is superior to his knee.

There is a bulge around where the quads tendon is and just above that is like a trench we were thinking a minor rupture of his rectus femorus (a severe grade two sprain maybe?) however he still has most normal function. Of course this lump could still be swelling however dont no what the trench is . oh by the way he inuried it in a tackle where he got tackled front on and fell to the injuried side. Any ideas would be great, thanks.

hi friend
hope ypu checked ligamentous and muscular special tests.
check out break test for quads,adductor,sartorious,medial hamstrings
check movements-range,quality,pain response in non weight bearing and weight bearing positions
is there associated joint line tenderness