
Stream TypeLIVE
- Chapters
Current Time 0:00
LIVE
Loaded: 0%
0:00
Progress: 0%
Seekbar Handle
/
Duration Time 0:00
Remaining Time -0:00
- Descriptions Off
- Subtitles Off
- Settings, opens captions settings dialog
- Captions Off
- English
- Español
- More Options
- Quality
- Audio Tracks
- Download
This is a modal window.
Captions Settings Dialog
Beginning of dialog window. Escape will cancel and close the window.
video buffering
Patellofemoral Pain Syndrome
This is a pain you feel in the front of your knee. It involves the patella. That's the bone we commonly call the "kneecap." The patella slides up and down in a groove on your femur as you bend and extend your knee. If you have this syndrome, you may have injured the soft tissues that support and cushion your kneecap. Or, you may have some damage to the cartilage on the underside of the kneecap.