What causes sharp stabbing pain in the knee?

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Tags

1. #injury
2. #climbing
3. #worse
4. #buildup
5. #arthritis
6. #chondromalacia
7. #front
8. #damaged
9. #taking
10. #inflammation
11. #overuse
12. #caused
13. #tendinitis
14. #patella
15. #walking
16. #repeated
17. #cartilage
18. #under
19. #bursitis
20. #incline
21. #stairs
22. #kneecap