I had a work related injury in 1983 which required a reconstructive surgery of the ACL in the right knee, 2001. I tore the medial and lateral meniscus of then right knee also, WCB accepted the meniscal tears. I returned to work in 2006 I had another twisting episode of the right knee a sprain or strain, with some time off work I retuned to work . In 2008 and 2010 my left knee started experiencing pain, I had a twisting episode of the left knee in 2012 most likely a partial tear, with extra pain medication I continued to work on two defunct knees, In 2013 I tore the medial and lateral meniscus of the left knee and I have not been able to work at any job since. I eventually underwent two Total Knee Replacements because of severe OA. WCB is only accepting responsibility of the right knee only. I am trying to draw the conclusion that the left knee and right are directly related to the original injury and be accepted in the in any entitlements accepted under this claim.