The Veteran's claims for increased ratings and TDIU were denied. The Board found that the current evaluations assigned are consistent with the evidence of record.

The Veteran's knee disabilities have been rated based on their effects on his ability to perform activities of daily living, with a 30 percent rating for post-operative residuals and a 40 percent rating for limited extension. A separate 10 percent rating has also been granted for symptomatic removal of semilunar cartilage.

The Veteran's claim for increased ratings for degenerative joint disease of the left and right feet has been granted with a rating of 20 percent each. However, his request for TDIU remains pending as it was not initially addressed by the AOJ.

The Board has determined that the Veteran's current left knee disability, including osteoarthritis and degenerative joint disease, is at least as likely as not related to her military service. The claim for service connection is therefore granted.

The Veteran's cervical spine disability prior to December 9, 2015 did not meet the criteria for a rating in excess of 10 percent due to limited range of motion and no evidence of ankylosis or intervertebral disc syndrome.