ya i cld row. i can run sprints, do an elliptical, etc. no treadmill or running long distance, to much on the knees. my prob was i had a botch surgery on my left knee. they tried to repair my meniscus instead of trimming it. thing is it never healed and actually tore during rehab. i went back to that doc and he examined me and twisted my knee every which way which was painful as hell, but he said it was ok. i finally was released to go back to practice 5 months after the surgery. i practiced 2 wks til i went to uab sports med. they looked at my xrays then told me to stand up w/ my legs together. he took a look and was like yep that's what i thought, ur a little bit bowlegged which means the tear was overtime not all at once. plus the tear was diff and cldn't be repaired. they decided to trim it. go into surgery and it had deteriorated so they had to remove it completely. he also told me that i had arthritis already set up in there. this was a wk before my 21st bday. needless to say i redshirted that year, and was never the same.