Suprapatellar bursitis is the kind of condition that sounds manageable until it isn't. The swelling above the kneecap, the stiffness when trying to fully flex the joint, the dull ache after sitting for too long — the standard playbook is straightforward: rest, ice, anti-inflammatory medication, maybe a cortisone injection if things persist.

If you are dealing with quadriceps contracture — whether it developed after an injury, a series of injections, a surgical procedure, or simply showed up as stiffness and limited knee flexion that refuses to resolve — you have likely received the standard advice: stretch more, do physical therapy, push through it.

Posterior cruciate ligament mucoid degeneration is one of those diagnoses that tends to arrive quietly — picked up on an MRI ordered for unexplained posterior knee pain, creeping stiffness, or a slow loss of full flexion.

If your knee has gradually locked up — less bend, less extension, a deep ache that doesn't match what the imaging shows — you've probably already been told to "just do physical therapy" or "give it time." That advice isn't wrong, but it's incomplete.