So I did a bit more digging...and I was wrong about the bursitis. I deleted the post mentioning it.
http://cowboyszone.com/forums/showthread.php?t=70236&highlight=terry+glenn+knee
Will Glenn play? A game-time call
By CLARENCE E. HILL JR.
STAR-TELEGRAM STAFF WRITER
IRVING - Cowboys wide receiver Terry Glenn practiced briefly Friday after sitting out Wednesday and Thursday with a lingering right knee injury.
Glenn is listed as probable on the injury report for Sunday's game against Arizona but said it will be a game-time decision.
He has chondromalacia, a roughening of the cartilage under his kneecap, and said he has trouble cutting.
Glenn had three catches for 26 yards, including a 10-yard touchdown, against Washington last week after getting a shot to numb the pain before the game. He said he will likely have to do the same in order to play against the Cardinals.
If Glenn doesn't play, rookie Sam Hurd will likely replace him in the lineup.
What is the chondromalacia patella?
Chondromalacia patella is the most common cause of chronic
knee pain. Chondromalacia patella results from poor alignment of the
kneecap (patella) as it slides over the lower end of the
thigh bone (
femur). Chondromalacia patella is also informally called "
housemaid's knee" or "
secretary's knee."
What are the symptoms of chondromalacia patella?
The symptoms of chondromalacia patella are generally a vague discomfort of the inner knee area, aggravated by activity (running, jumping, climbing or descending stairs) or by prolonged sitting with knees in a moderately bent position (the so called "theater sign" of pain upon arising from a desk or theater seat). Some patients may also have a vague sense of "tightness" or "fullness" in the knee area. Occasionally, if chronic symptoms are ignored, the associated loss of
quadriceps (
thigh) muscle strength may cause the leg to "give out." Besides an obvious reduction in quadriceps muscle mass, mild swelling of the knee area may occur.
How is chondromalacia patella treated?
The primary goal for treatment and
rehabilitation of chondromalacia patella is to create a straighter pathway for the patella to follow during quadriceps contraction. Initial
pain management involves avoiding motions which irritate the kneecap. Icing and anti-inflammatory medications (for examples,
ibuprofen: Advil/Motrin or
naproxen: Aleve) can also be helpful.
Selective strengthening of the inner portion of the quadriceps muscle will help normalize the tracking of the patella. Cardiovascular conditioning can be maintained by stationary bicycling (low resistance, but high rpms), pool running, or swimming (flutter kick). Reviewing any changes in training prior to chondromalacia patella pain, as well as examining running shoes for proper biomechanical fit are critical to avoid repeating the painful cycle. Generally, full squat exercises with weights are avoided. Occasionally, bracing with patellar centering devices are required.
Stretching and strengthening the quadriceps and hamstring muscle groups is critical for an effective and lasting rehabilitation of chondromalacia patella. "Quad sets" are the foundation of such a program. Quad sets are done by contraction the thigh muscles while the legs are straight and holding the contraction for a count of ten. Sets of 10 contractions are done between 15-20 times per day.
What is the outlook with chondromalacia patella?
Under optimal circumstances, the patient should have a rapid recovery and return at full functional level.
http://www.medicinenet.com/patellofemoral_syndrome/page2.htm